Innovative Technological AdvancementsMove forward with Chang Sung Corporation. We are one of the mainsuppliers of cutting edge products to all our customers at theforefront of the next generation in energy solutions.
www.changsung.comVer.13
MAGNETIC POWDER CORES
01 ::: Chang Sung Corporation
We deliver excellence in performance by always keeping our customers’ specific needs in mind.
Chang Sung Corporation has been producing magnetic powder cores with sophisticated technologicalexpertise in manufacturing metal powders since 1980. We have steadfastly made investments into our
research and development program as well as our manufacturing facilities to increase our range ofproducts and production capacity in line with the growing needs of our customers.
This has enabled Chang Sung Corporation to become a leading global player in producing softmagnetic powder cores. Today, we are well positioned to offer reliable product quality at competitive
prices to meet the diverse requirements of all our clients.
Moving forward with Chang Sung Corporationto the Next Generation in Energy Solutions.
CSC soft magneticpowder cores are
at the forefront ofadvanced industries
Magnetic Powder Cores ::: 02
03 ::: Chang Sung Corporation
What arePowder Cores?
Core MaterialsMPP Core : Ni-Fe-Mo alloyHigh Flux Core : Fe-Ni alloySendust Core : Fe-Si-Al alloyMega Flux Core : Fe-Si alloy
Core ShapesToroids : From 3.5mm to 165mm OD Special :Ellipse, Block, Cylinder
Washer, ER, U, EE, EER, EQ
PermeabilityMPP : 26, 60, 125, 147, 160, 173, 200μHigh Flux : 26, 60, 125, 147, 160μSendust : 26, 60, 75, 90, 125μMega Flux : 26, 50, 60, 75, 90μ
Core FinishesFinish : Epoxy, Parylene-C, Plastic CaseColor - MPP : Gray
- High Flux : Khaki- Sendust : Black- Mega Flux : Dark Brown
Break-Down Voltage : 500V min.
MAGNETIC POWDER CORES PRODUCT LINE - UP
Product Summary
Cross Sectional View
CeramicLayer
Magnetic Powder
Powder cores are distributed air gap cores made from ferrous alloypowders for low losses at high frequencies. Small air gaps distributedevenly throughout the cores increase the amount of Direct Current (DC)that can be passed through the winding before core saturation occurs. Molybdenum Permalloy Powder (MPP) cores are ideal for low loss inductorssuch as switching regulators and noise filters.High Flux, Sendust and Mega Flux cores are the preferred choices forPower Factor Correction (PFC), switching regulator inductors, in-line noisefilters, pulse and flyback transformers and many other applicationsrequiring low losses at high frequencies.
Chang Sung Corporation’sadvanced technology enablesus to fulfill the diverse needsof our clients for soft magneticpowder cores.
Magnetic Powder Cores ::: 04
Chang Sung Corporation manufactures four types of soft magnetic powder cores including the Molybdenum Permalloy(MPP), High Flux, Sendust and Mega Flux , which are mainly used for inductors and transformers requiring low losses andinductance stability under high DC bias conditions. A fully standardized production management system under strictquality control of the raw materials (nickel, iron, molybdenum, aluminum and silicon) enables CSC to guarantee consistentquality and thus build greater confidence in our company’s product line.
MPP Ni-Fe-Mo alloy powder cores are made from alloy powders ofnickel, iron and molybdenum.MPP cores exhibit a highly sustainable stability in temperature and inductance under high DCmagnetization or high DC Bias conditions. They offer the highest permeability among ourmaterials and the lowest core loss compared to any other core material. MPP cores are alsoconsidered to be a premium material for direct current output inductors for SMPS includinghigh Q filters, loading coils and EMI/RFI filters. Finished toroid cores are coated with a grayepoxy to provide dielectric protection and added physical strength.
HIGH FLUXNi-Fe alloy powder cores are made from alloy powders of nickel and iron.The 15,000 Gauss saturation level of High Flux cores has a higher energy storage capabilityand more effective permeability when compared to the performance of gapped ferrite orpowdered iron cores of a similar size. The excellent DC bias characteristics and low core lossesof High Flux cores offer a reduction in size and the number of winding turns as well as superiormagnetic properties. CSC High Flux cores are excellent choices for applications such as PFCreactors, switching regulator inductors, in-line noise filters, pulse transformers and flybacktransformers. Finished High Flux cores are coated with a Khaki epoxy and come in a variety ofshapes and sizes.
SENDUSTFe-Si-Al alloy powder cores are made from alloy powders of iron,silicon and aluminum.Near-zero magnetostriction makes Sendust cores ideal for eliminating audible noise in filter
inductors. Core losses of Sendust cores are significantly lower than those of powdered ironcores. Especially Sendust E shapes provide a higher energy storage capability than gappedFerrite E cores. Gap losses and eddy current losses are minimized with Sendust E corescompared to gapped ferrite E shapes. Sendust cores are a smart choice for PFC circuits. Othermajor applications include switching regulator inductors, In-line noise filters, pulsetransformers and flyback transformers. Finished Sendust cores are coated in a black epoxy.
MEGA FLUXFe-Si alloy powder cores are made from an alloy of iron and silicon.CSC has developed new magnetic alloy powder cores for the first time in the world under the name ofMega Flux . The innovative design of these unique cores includes a smaller size, higher current andhigher energy storage capability. Mega Flux cores have higher flux density than any other magneticmaterial, 16,000Gauss compared to 15,000Gauss for High Flux cores and 10,000 Gauss for Sendustcores. The extremely good DC bias characteristics provide the best solution for high end applicationssuch as buck/boost inductors for high power supply systems, smoothing chokes for inverters andreactors for electric vehicles. Mega Flux cores pressed with no organic binder have significantly lowercore losses than powdered iron cores and Fe-Si strip cores. They also present excellent thermalproperties with no thermal aging effects. Finished Mega Flux cores are coated with a dark brown epoxy.
Outstanding products begin with a standardizedproduction line and a strict quality control process
MAGNETIC POWDER CORES PRODUCT DESCRIPTION
05 ::: Chang Sung Corporation
MAGNETIC POWDER CORES TECHNICAL DATA
Comparison of Core materialsPerm. ( ) Bs (G) Core Loss DC Bias Relative Cost Temp. Stability Curie Temp ( )
MPP 14-200 7,000 Lower Better High Best 450
High Flux 26-160 15,000 Low Best Medium Better 500
Sendust 26-125 10,000 Low Good Low Good 500
Mega Flux 26-90 16,000 Medium Best Low Better 700
Iron 10-100 10,000 High Poor Lowest Poor 770
Fe-si (Gapped) 18,000 High Best Lowest Good 740
Amorphous (Gapped) 15,000 Low Better Medium Good 400
Ferrite (Gapped) 4,500 Lowest Poor Lowest Poor 100~300
Permeability vs DC Bias
Core Loss (at 50kHz)
Magnetic Powder Cores ::: 06
Materials
Powder
Strip
07 ::: Chang Sung Corporation
MAGNETIC POWDER CORES TECHNICAL DATA
CM 270 125 EToroidal Core Designation
Core finishE:Epoxy, P :Parylene-C, C :Plastic CaseEpoxy coated
OD size:27.0mm
MPP core
Available size 3.5mm~165.0mm(OD)
Core materialCM:MPP, CH:High Flux, CS :Sendust, CK : Mega Flux
Available perm. 26, 50, 60, 75, 90, 125, 147, 160, 173, 200μPermeability :125μ
CSC’s Core Designation
(nH/N2)
PermeabilityPart No.
C 035 C 039 C 046
C 063 C 066 C 067
C 068 C 078 C 096
C 097 C 102 C 112
C 127 C 166 C 172
C 203 C 229 C 234
C 270 C 330 C 343
C 358 C 400 C 467
C 468 C 508 C 571
C 572 C 610 C 740
C 777 C 778 C 888 C 1016 C 1325 C 1625
26μ026
---
101121
141111
141411
121519
141922
322816
243559
373260
338389
303724476780
60μ060
131720
242650
332525
323226
273543
324351
756138
5681
135
8673
138
75192206
688557
112156184
75μ075
162125
303262
423132
404032
344353
415463
947647
70101169
10791
172
94240257
85107
71137195230
90μ090
192530
363974
503738
484838
405264
496576
1139157
84121202
128109206
112288309
102128
85164234276
125μ125
263542
5054
103
705253
666653
567289
6890
105
15712779
117168281
178152287
156400429
142178119228325384
147μ147
314149
5964122
816263
787863
6788105
81106124
18515093
138198330
210179306
185--
------
160μ160
334553
6469
132
896668
848468
7292
114
87115135
201163101
150215360
228195333
200--
------
173μ173
364857
6975
144
957374
929274
79104123
96124146
217176109
162233
-
---
---
------
200μ200
425667
8086
165
1128384
10510585
90115142
109144169
251--
---
---
---
------
example) AL value of CM270125 is 157(nH/N2)
Nominal Inductance Table (AL Value)
Magnetic Powder Cores ::: 08
MAGNETIC POWDER CORES TECHNICAL DATA
3.94 1.52 1.96
4.32 1.98 2.97
5.21 1.93 3.30
6.99 2.29 3.43
7.24 2.29 3.18
7.32 2.21 5.54
7.62 3.45 5.72
8.51 3.43 3.81
10.29 4.27 3.81
10.29 4.27 4.57
10.80 4.57 4.57
11.90 5.89 4.72
13.46 6.99 5.51
17.40 9.53 7.11
18.03 9.02 7.11
21.1 12.07 7.11
23.62 13.39 8.38
24.30 13.77 9.70
27.70 14.10 11.99
33.83 19.30 11.61
35.20 22.60 9.83
36.70 21.50 11.28
40.70 23.30 15.37
47.60 23.30 18.92
47.60 27.90 16.13
51.70 30.90 14.35
58.00 25.60 16.10
58.00 34.70 14.86
63.1 31.37 26.27
75.2 44.07 36.27
78.9 48.0 13.97
78.9 48.0 17.2
90.0 64.74 17.2
103.1 55.7 17.9
134.2 77.0 26.8
167.2 86.9 27.3
MagneticPath Length
(cm)
CrossSectionA(cm2) CMafter finish 40% winding
factor CH CS CK Before Finish After Finish
Weight(gm)Dimensions(mm)
OD(max) X ID(min) X HT(max)Part Number
CM : MPP Core, CH : High Flux Core, CS : Sendust Core, CK : Mega Flux CoreWindow area : area of inner diameter.In addition to the cores listed above, customized specifications are also available.
C 035
C 039
C 046
C 063
C 066
C 067
C 068
C 078
C 096
C 097
C 102
C 112
C 127
C 166
C 172
C 203
C 229
C 234
C 270
C 330
C 343
C 358
C 400
C 467
C 468
C 508
C 571
C 572
C 610
C 740
C 777
C 778
C 888
C 1016
C 1325
C 1625
0.817
0.942
1.060
1.361
1.363
1.363
1.650
1.787
2.18
2.18
2.38
2.69
3.12
4.11
4.14
5.09
5.67
5.88
6.35
8.15
8.95
8.98
9.84
10.74
11.63
12.73
12.50
14.30
14.37
18.38
20.00
20.00
24.01
24.27
32.42
38.65
0.0137
0.0211
0.0285
0.0470
0.0476
0.0920
0.0725
0.0615
0.0752
0.0945
0.1000
0.0906
0.114
0.192
0.232
0.226
0.331
0.388
0.654
0.672
0.454
0.678
1.072
1.990
1.340
1.250
2.29
1.444
3.675
5.040
1.770
2.270
18.30
3.522
6.71
9.46
WindowArea(cm2)
PackageUnit
(pcs/box)
0.018
0.0308
0.0290
0.0412
0.0412
0.0384
0.0934
0.0922
0.1429
0.1429
0.164
0.273
0.383
0.713
0.638
1.14
1.41
1.49
1.56
2.93
4.01
3.64
4.27
4.27
6.11
7.50
5.14
9.48
7.73
15.25
17.99
17.99
32.92
24.36
45.56
59.31
Surface Area(cm2)
0.47
0.74
0.90
1.7
1.7
2.4
2.7
2.4
3.1
3.5
3.7
4.3
5.6
9.3
9.9
12.1
15.7
17.9
24.7
31.5
29.3
34.5
48.4
69.2
61.6
64.2
84.8
77.2
125.1
194.2
117.3
130.2
134.5
206.1
366.3
538.7
0.61
0.93
1.13
2.03
2.06
2.76
3.31
3.04
4.14
4.47
4.85
6.05
8.00
13.66
13.91
18.95
24.13
26.78
34.42
49.01
52.34
56.09
73.77
96.50
97.79
108.52
120.40
133.19
173.99
283.09
224.42
236.84
262.03
358.37
648.48
689.82
0.09
0.19
0.26
0.56
0.60
1.12
1.03
0.94
1.41
1.76
2.09
2.11
3.13
6.9
8.2
10.0
15.9
19.6
35.6
47.0
35.3
52
91
182
130
132
248
181
444
764
301
377
333
774
1863
3267
0.09
0.18
0.25
0.53
0.57
1.07
0.98
0.90
1.34
1.68
2.00
2.02
2.99
6.6
8.0
10.0
15.1
19
34.0
44.8
33.7
50
87
174
124
126
237
173
423
729
287
359
319
739
1779
3120
40k
40k
40k
30k
20k
20k
16k
16k
8k
8k
8k
6k
4K
1,960
1,960
1,368
850
750
360
240
280
240
120
72
72
96
77
88
24
15
40
35
15
12
4
4
0.07
0.13
0.20
0.41
0.44
0.83
0.76
0.69
1.04
1.30
1.55
1.57
2.32
5.2
6.1
7.4
11.7
14.5
26.4
34.8
26.2
39
67
134
96
98
184
133
329
566
223
279
255
572
1376
2413
0.08
0.15
0.23
0.47
0.50
0.96
0.88
0.80
1.21
1.50
1.79
1.81
2.69
6.0
7.1
8.7
13.6
16.8
30.6
40.4
30.3
45
78
157
112
114
213
155
381
656
258
323
305
665
1620
2808
3.56 1.78 1.52
3.94 2.24 2.54
4.65 2.36 2.54
6.35 2.79 2.79
6.60 2.67 2.54
6.60 2.67 4.78
6.86 3.96 5.08
7.87 3.96 3.18
9.65 4.78 3.18
9.65 4.78 3.96
10.16 5.08 3.96
11.18 6.35 3.96
12.70 7.62 4.75
16.51 10.16 6.35
17.27 9.65 6.35
20.32 12.70 6.35
22.86 13.97 7.62
23.57 14.40 8.89
26.92 14.73 11.18
33.02 19.94 10.67
34.29 23.37 8.89
35.81 22.35 10.46
39.88 24.13 14.48
46.74 24.13 18.03
46.74 28.70 15.24
50.80 31.75 13.46
57.15 26.39 15.24
57.15 35.56 13.97
62.0 32.6 25.0
74.1 45.3 35.0
77.8 49.23 12.7
77.8 49.23 15.9
88.9 66.0 15.9
101.6 57.2 16.5
132.5 78.6 25.4
165.0 88.9 25.4
Core Dimension Table(milimeters)
09 ::: Chang Sung Corporation
MAGNETIC POWDER CORES TECHNICAL DATA
The inductance of a wound core at a given number of turns is calculated using the following formula.
L
L = inductance(μH)
μ = core permeability
N = number of turns
A = effective cross section area(cm2)
= mean magnetic path length(cm)
LN = Inductance at N turns(μH)
AL = nominal Inductance(nH/N2)
N2A 10-20.4 μ
LN
=
= AL N2 10-3
Ampere’s Law
Faraday’s Law
Magnetic Design Formulas
Inductance of a Wound Core
Ampere’s Law and Faraday’s Law show the relations of permeability, flux density and magnetizing force of a wound core.
H = magnetizing force(oersteds)
N = number of turns
l = peak magnetizing current(amperes)
= mean magnetic path length(cm)
Bmax = maximum flux density(gausses)
Erms = voltage across coil(volts)
f = frequency(hertz)
Permeability - Flux Density - Magnetizing Force
Inductor specification
a) Formula to calculate L at 0Ampere
LN = AL N2 10-3
The Nominal inductance table on page 7 shows the AL value of CM270125 to be 157.
Therefore, L ( 0A) = 157 222 0.001 = 76 (μH)
b) Determine DC magnetizing force (H) by using Ampere’s law to achieve the roll off.
H = 0.4 Nl /
H = 0.4 3.14 22 10 / 6.35 = 43.5(Oe)
The magnetizing force(dc bias) is 43.5 oersteds, yielding 64% of initial permeability. See on page 11.
The inductance at 10Ampere will decrease the inductance by 64% compared with 0Ampere.
Therefore, L( 10A) = 76 0.64
= 48.6 (μH)
Inductance calculation by AL vs Nl Curve is also available on page 24.
solution
- Core : CM270125
- Number of Windings : 22Turns
- Current : DC 10Amperes
Inductance Calculation by Permeability vs DC Bias Curves
H Nl0.4
Bmax
=
= Erms 108
4.44fAN
μ B=H
Magnetic Powder Cores ::: 10
MAGNETIC POWDER CORES TECHNICAL DATA
For toroidal powder cores, the effective area(A) is the same as the cross sectional
area. By definition and Ampere’s Law, the effective magnetic path length is the ratio
of ampere-turns(NI) to the average magnetizing force. Using Ampere’s Law and
averaging the magnetizing force gives the formula for effective path length.
Mean Magnetic Path Length
(OD - ID)ODID( )
=ln
Q = quality factor
= 2 frequency (hertz)
L = inductance (henries)
Rdc = DC winding resistance (ohms)
Rac = resistance due to core loss (ohms)
Rd = resistance due to winding dielectric loss (ohms)
QL
=Rdc Rac Rd
Powder cores have low hysteresis loss, minimizing signal distortion, and low residual loss. The total core loss at low flux densities is the
sum of three frequency dependent losses of hysteresis loss, residual loss, and eddy current loss. The core loss is calculated from the
following Legg’s equation.
When a varying magnetic field passes through the core, eddy currents are induced in it. Joule heat loss by these currents is called eddy
current loss. Hysteresis loss is due to the irreversible behavior in the hysteresis curve and equal to the enclosed area of the loop.
The other core loss is called residual loss.
Where Rac = core loss resistance (ohms)
a = hysteresis loss coefficient
c = residual loss coefficient
e = eddy current loss coefficient
, L, Bmax, f = same as mentioned before Eddy current loss
Core Loss
Residual loss
Hysteresis loss
Total loss factor
Rac aBmaxf cf ef2
L=
OD = outside diameter of core (cm)
ID = inside diameter of core (cm)
A = core cross section (effective area)
= mean magnetic path length (cm)
The Q factor is defined as the ratio of reactance to the effective resistance for an inductor and thus indicates its quality. The Q of wound core can
be calculated using the following formula, when neglecting the effects of self-resonance caused by the distributed capacitance resulting from the
differential voltage between adjacent turns.
Q Factor
11 ::: Chang Sung Corporation
MPP
Hig
h F
lux
MAGNETIC POWDER CORES TECHNICAL DATA
Permeability vs DC Bias Curves
μ2660125147160173200
a0.010.010.010.010.010.010.01
c2.0302.4122.5232.4712.4952.5132.524
b1.42E-071.27E-074.07E-077.58E-078.20E-071.03E-061.18E-06
%perm =1
a+b Hc
μ2660125147160
a0.010.010.010.010.01
c2.0872.3262.3862.6192.475
b3.41E-085.42E-082.09E-071.16E-072.50E-07
%perm =1
a+b Hc
Magnetic Powder Cores ::: 12
Sendust
Meg
a Fl
ux
MAGNETIC POWDER CORES TECHNICAL DATA
μ26607590125
a0.010.010.010.010.01
c1.6971.7821.7551.6761.626
b1.23E-062.75E-064.58E-069.54E-062.41E-05
%perm =1
a+b Hc
μ2650607590
a0.010.010.010.010.01
c1.8832.1771.9821.8411.828
b9.96E-087.35E-083.30E-071.11E-062.01E-06
%perm =1
a+b Hc
Permeability vs Frequency Curves
Hig
h F
lux
MPP
Sendust
Meg
a Fl
ux
13 ::: Chang Sung Corporation
MAGNETIC POWDER CORES TECHNICAL DATA
Magnetic Powder Cores ::: 14
MAGNETIC POWDER CORES TECHNICAL DATA
MPP Core Loss
MPP 26μ, 60μ
PL =0.22 B1.99
f 1.68
(B :kilogauss, f :kHz)
MPP
26μ, 6
0μ
MPP
125μ
MPP 125μ
15 ::: Chang Sung Corporation
MPP Core Loss
MAGNETIC POWDER CORES TECHNICAL DATA
100 1000 100001
10
100
1000
10000
Flux Density (Gauss)
Core
Loss
(m
W/c
m)
P=B2.026(0.865f+0.2634f1.712)P:mW/cc, B:kGauss, f:kHz
3
5kHz
10kHz
20kHz
50kHz
100kHz
200kHz
300kHz
MPP
147μ, 1
60μ, 1
73μ
100 1000 100001
10
100
1000
10000
Flux Density (Gauss)
Co
re L
oss
(m
W/c
m3)
P=B2.045(0.848f+0.3513f1.716)P:mW/cc, B:kGauss, f:kHz
5kHz
10kHz
20kHz
50kHz
100kHz
200kHz
300kHz
MPP
200μ
MPP 147μ, 160μ, 173μ
MPP 200μ
Magnetic Powder Cores ::: 16
High Flux Core Loss
MAGNETIC POWDER CORES TECHNICAL DATA
Hig
h F
lux
26μ
Hig
h F
lux
60μ
High Flux 26μ
High Flux 60μ
17 ::: Chang Sung Corporation
MAGNETIC POWDER CORES TECHNICAL DATA
High Flux Core Loss
Hig
h F
lux
125μ
Hig
h F
lux
147μ, 1
60μ
High Flux 125μ
High Flux 147μ, 160μ
Magnetic Powder Cores ::: 18
MAGNETIC POWDER CORES TECHNICAL DATA
Sendust Core Loss
Sendust
26μ
Sendust
60μ
,75μ,9
0μ,1
25μ
Sendust 26μ
Sendust 60μ, 75μ, 90μ, 125μ
19 ::: Chang Sung Corporation
MAGNETIC POWDER CORES TECHNICAL DATA
Mega Flux Core Loss
Meg
a Fl
ux
26μ
Meg
a Fl
ux
50μ, 6
0μ, 7
5μ, 9
0μ
Mega Flux 26μ
Mega Flux 50μ, 60μ, 75μ, 90μ
Magnetic Powder Cores ::: 20
MAGNETIC POWDER CORES TECHNICAL DATA
Hig
h F
lux
MPP
Sendust
Meg
a Fl
ux
Temperature Stability
21 ::: Chang Sung Corporation
MAGNETIC POWDER CORES TECHNICAL DATA
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
inchcmcm2( 10-3) Cir-MilArea Diameter
gm/cmWeight
200 400 600 800
11046
8798
7022
5610
4556
3624
2905
2323
1857
1490
1197
954.8
761.7
620.0
497.3
396.0
316.8
259.2
207.3
169.0
134.5
110.2
90.25
72.25
56.25
44.89
36.00
30.25
24.01
18.49
14.44
11.56
9.00
7.29
6.25
55.9
44.5
35.64
28.36
22.95
18.37
14.73
11.68
9.326
7.539
6.065
4.837
3.857
3.135
2.514
2.002
1.603
1.313
1.0515
0.8548
0.6785
0.5595
0.4559
0.3662
0.2863
0.2268
0.1813
0.1538
0.1207
0.0932
0.0723
0.0584
0.04558
0.03683
0.03165
10-6 cm at 20
32.70
41.37
52.09
65.64
82.80
104.3
131.8
165.8
209.5
263.9
332.3
418.9
531.4
666.0
842.1
1062.0
1345.0
1687.6
2142.7
2664.3
3402.2
4294.6
5314.9
6748.6
8572.8
10849
13608
16801
21266
27775
35400
43405
54429
70308
85072
Cir-Mil
10384
8226
6529
5184
4109
3260
2581
2052
1624
1289
1024
812.3
640.1
510.8
404.0
320.4
252.8
201.6
158.8
127.7
100.0
79.21
64.00
50.41
39.69
31.36
25.00
20.25
16.00
12.25
9.61
7.84
6.25
4.84
4.00
cm2
( 10-3)
AWGWireNo.
53.61
41.68
33.08
26.26
20.82
16.51
13.07
10.39
8.228
6.531
5.188
4.116
3.243
2.588
2.047
1.623
1.280
10.21
0.8046
0.6470
0.5067
0.4013
0.3242
0.2554
0.2011
0.1589
0.1266
0.1026
0.08107
0.06207
0.04869
0.03972
0.03166
0.02452
0.0202
0.267
0.238
0.213
0.190
0.171
0.153
0.137
0.122
0.109
0.0980
0.0879
0.0785
0.0701
0.0632
0.0566
0.0505
0.0452
0.0409
0.0366
0.0330
0.0294
0.0267
0.0241
0.0216
0.0191
0.0170
0.0152
0.0140
0.0124
0.0109
0.0096
0.00863
0.00762
0.00685
0.00635
0.1051
0.0938
0.0838
0.0749
0.0675
0.0602
0.0539
0.0482
0.0431
0.0386
0.0346
0.0309
0.0276
0.0249
0.0223
0.0199
0.0178
0.0161
0.0144
0.0130
0.0116
0.0105
0.0095
0.0085
0.0075
0.0067
0.0060
0.0055
0.0049
0.0043
0.0038
0.0034
0.0030
0.0027
0.0025
0.468
0.3750
0.2977
0.2367
0.1879
0.1492
0.1184
0.0943
0.07472
0.05940
0.04726
0.03757
0.02965
0.02372
0.01884
0.01498
0.01185
0.00945
0.00747
0.00602
0.00472
0.00372
0.00305
0.00214
0.00189
0.00150
0.00119
0.000977
0.000773
0.000593
0.000464
0.000379
0.000299
0.000233
0.000195
10.4
8.23
6.53
5.18
4.11
3.26
2.58
2.05
1.62
1.29
1.02
0.812
0.640
0.511
0.404
0.320
0.253
0.202
0.159
0.128
0.100
0.0792
0.0640
0.0504
0.0397
0.0314
0.0250
0.0203
0.0160
0.0123
0.00961
0.00785
0.00625
0.00484
0.00400
20.8
16.4
13.06
10.4
8.22
6.52
5.16
4.10
3.25
2.58
2.05
1.63
1.28
1.02
0.808
0.641
0.506
0.403
0.318
0.255
0.200
0.158
0.128
0.101
0.0794
0.0627
0.0500
0.0405
0.0320
0.0245
0.0192
0.0157
0.0125
0.00968
0.00800
31.2
24.6
19.6
15.5
12.3
9.78
7.74
6.15
4.88
3.87
3.08
2.44
1.92
1.53
1.21
0.962
0.759
0.604
0.477
0.382
0.300
0.237
0.192
0.152
0.119
0.0940
0.0750
0.0608
0.0480
0.0368
0.0288
0.0236
0.0188
0.0145
0.0120
41.6
32.8
26.1
20.8
16.4
13.0
10.3
8.20
6.50
5.16
4.10
3.25
2.56
2.04
1.62
1.28
1.01
0.806
0.636
0.510
0.400
0.316
0.256
0.202
0.159
0.125
0.100
0.0810
0.0640
0.0490
0.0384
0.0314
0.0250
0.0194
0.0160
Bare Area Resistivity Heavy Synthetics Current Capacity Amps(listed by columns of amps/cm2)
Wire Table
Magnetic Powder Cores ::: 22
MAGNETIC POWDER CORES TECHNICAL DATA
035039 046
063 066 067
068 078 096
097 102112
127166 172
203229 234
270 330 343
358 400 467
468 508571
572 777
Turns / Single Layer
Cir-Mils cm2 ft100 (unity)b 0
inch
0.02290.03440.0375
0.04420.04350.0575
0.05860.05240.0588
0.06320.06510.0720
0.08150.10570.1204
0.12040.14050.1473
0.17140.19430.1923
0.2040.2420.284
0.2730.2790.296
0.3060.340
cm
0.6981.0491.143
1.3481.3271.754
1.7861.5981.793
1.9281.9862.195
2.493.223.67
3.674.294.49
5.235.935.87
6.227.388.66
8.348.519.02
9.3310.40
ft
0.01950.02930.0324
0.03790.03710.0531
0.05120.04170.0448
0.04980.05040.0507
0.05740.07210.0763
0.07630.08860.0982
0.12330.12380.1059
0.12380.15780.204
0.17060.16230.212
0.17390.193
cm
0.5940.8940.988
1.1561.1321.620
1.5611.2721.366
1.5191.5371.545
1.7512.202.33
2.332.703.00
3.763.783.23
3.784.816.22
5.204.956.46
5.305.90
3,6006,0805,780
8,1008,1007,57018,50018,20028,200
28,20032,40053,800
75,600140,600126,000
225,600277,700293,800
308,000577,600788,500
719,100842,700842,700
1,206,0001,484,0001,014,049
1,871,0003,550,000
0.0180.03080.029
0.04120.04120.0384
0.09340.09220.1429
0.14290.1640.273
0.3830.7130.638
1.141.411.49
1.562.934.01
3.644.274.27
6.117.505.14
9.4817.99
CoreSize
0.195 0.1080.227 0.1870.262 0.195
0.347 0.2120.359 0.2020.361 0.292
0.378 0.3940.433 0.2650.526 0.293
0.526 0.3230.554 0.3330.618 0.353
0.717 0.4510.932 0.5990.980 0.641
1.148 0.6841.283 0.7781.319 0.843
1.468 0.9441.840 1.1031.974 1.142
2.01 1.1652.22 1.3852.51 1.525
2.61 1.5682.85 1.6002.98 1.34
3.20 1.7484.40 2.14
mm
4.95 2.745.77 4.756.65 4.94
8.81 5.389.12 5.139.17 7.42
9.60 10.0111.0 6.7313.4 7.44
13.4 8.2014.1 8.4615.7 9.0
18.2 11.523.7 15.224.9 16.3
29.2 17.432.6 19.833.5 21.4
37.3 24.046.7 28.050.1 29.0
51.1 29.656.4 35.263.8 38.7
66.3 39.872.4 40.675.7 34.0
81.3 44.4112.0 54.3
Window AreaaWire Length / Turn Wound Dimensionc
OD HT(Max)
CoreSize
WireNo.
WireDia
ID(mm)
046
1.93
063066
2.29
068078
3.45
096097
4.27
102
4.57
112
5.89
127
6.99
166
9.53
172
9.02
203
12.07
229
13.39
234
13.77
270
14.10
330
19.30
343
22.60
358
21.50
400467
23.30
468
27.90
508
30.90
571
25.60
572
34.70
610
31.37
777
48.00
101112
131415
161718
19 2022
242628
30323436
2.672.382.13
1.901.711.53
1.371.221.09
0.980.880.70
0.560.450.36
0.290.240.190.15
912
15192531
81114
19233038
11
141823
29364658
91114
182329
37465873
9
101215
202532
404962
91112
141621
263342
5264
10
111315
171925
314050
6377
10
111315
171921
242735
445569
9
101214
161820
232633
415265
13
151719
222528
323545
567189
15
171922
252831
354050
637999
15
172022
252932
364152
6581101
16
182023
262933
374253
6683104
23
262932
374146
525874
92115143
27
303438
434955
616987
108135168
25
293237
414652
586582
103129160
22
252831
354045
505771
90112140
263034
384348
546168
7786108
134168
303338
434854
606876
8595120
149186
263034
394349
556270
7888111
138174
374248
546068
768596
108120152
189237
353944
505663
718090
101113143
536067
768495
106119134
150168211
Single Layer Winding Capacity
a : Window Area (= /4 ID2: Core inside diameter), b : Winding Factor ( k= Usable window area/Total window area), c : 100% Winding Assumed
Winding Data
23 ::: Chang Sung Corporation
MAGNETIC POWDER CORES NOTES
Inductor specification
Solution
a) Calculate NI (Ampere Turns) NI = 22Turns X 10Ampere = 220
b) Read the AL value of CM270125 using the AL vs NI curve on page 43.
AL value of CM270125 yields 100.4 when NI is 220.
c) Calculate L at 10Ampere by using formula; LN = AL x N2X 10-3(μH)
Therefore,
L( 10A) = 100.4 222 0.001
= 48.6(μH)
Inductance calculation by Permeability vs DC Bias Curve is also available on Page 11.
- Core : CM270125
- Number of Winding : 22Turns
- Current : DC 10Amperes
Inductance Calculation by AL vs NI Curves;
Magnetic Powder Cores ::: 24
TOROIDALMAGNETIC
POWDERCORES
Tolerance of AL value
OD 035~OD 046OD 063~OD 112OD 127~OD 1625
Core Size
15%12%8%
NA8%8%
12%8%8%
12%8%8%
Sendust MPP High Flux Mega Flux
25 ::: Chang Sung Corporation
OD035Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 3.56 1.78 1.52(inch) 0.140 0.070 0.060
After coating (mm) 3.76 1.58 1.72(parylene-C) (inch) 0.148 0.062 0.068
Magnetic Dimensions
0.0137cm2 0.817cm 0.018cm2 0.010746cm3
0.002in2 0.317in 3,600cmil 0.000656in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
282930313233343536
0.03660.03300.02940.02670.02410.02160.01910.01700.0152
91011131416192124
0.02370.03140.04310.05810.07680.1050.1460.2000.272
3738394041424344
0.01400.01240.01990.00960.008630.007620.006850.00635
2730354044505660
0.3630.5030.7271.021.371.902.673.45
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
-CM035060
--
CM035125CM035147CM035160
--
-CH035060
--
CH035125----
-CS035060CS035075CS035090CS035125
----
-CK035060CK035075CK035090
-----
-131619263133--
26607590125147160173200
ID 1.78mm HT 1.52mm
AL vs NI Curve (125μ)
OD 3.56mm / 0.140inch
TORO
IDAL M
AGNETIC POW
DER CO
RES
Cross Section Path Length Window Area Volume(A) ( ) (Wa) (V)
Magnetic Powder Cores ::: 26
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD039Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 3.94 2.24 2.54(inch) 0.155 0.088 0.100
After coating (mm) 4.14 2.04 2.74(Parylene-C) (inch) 0.163 0.080 0.108
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
0.04090.03660.03300.02940.02670.02410.02160.01910.0170
111214161820232629
272829303132333435
0.02480.03420.04580.06380.08690.1160.1610.2260.313
363738394041424344
0.01520.01400.01240.01090.00960.008630.007620.006850.00635
333641475359677480
0.4300.5790.8071.181.672.253.154.455.76
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
-CM039060
--
CM039125CM039147CM039160
--
-CH039060
--
CH039125----
-CS039060CS039075CS039090CS039125
----
-CK039060CK039075CK039090
-----
-172125354145--
26607590125147160173200
ID 2.24mm HT 2.54mm
OD 3.94mm / 0.155inch
AL vs NI Curve (125μ)
0.0211cm2 0.942cm 0.0308cm2 0.019670cm3
0.003245in2 0.370inch 6,080cmil 0.001200in3
27 ::: Chang Sung Corporation
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD046Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 4.65 2.36 2.54(inch) 0.183 0.093 0.100
After coating (mm) 4.85 2.16 2.74(parylene-C) (inch) 0.191 0.085 0.108
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.0285cm2 1.060cm 0.029cm2 0.0302cm3
0.00442in2 0.418in 5,780cmil 0.001837in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
262728293031323334
0.04520.04090.03660.03300.02940.02670.02410.02160.0191
91012131517192225
0.02050.02800.03880.05240.07340.1010.1350.1880.266
353637383940414243
0.01700.01520.01400.01240.01090.00960.008630.007620.00685
283135394551576471
0.3710.5110.6910.9681.422.022.733.835.42
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
-CM046060
--
CM046125CM046147CM046160
--
-CH046060
--
CH046125----
-CS046060CS046075CS046090CS046125
----
-CK046060CK046075CK046090
-----
-202530424953--
26607590125147160173200
ID 2.36mm HT 2.54mm
AL vs NI Curve (60μ, 125μ)
OD 4.65mm / 0.183inch
Magnetic Powder Cores ::: 28
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD063Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 6.35 2.79 2.79(inch) 0.250 0.110 0.110
After coating (mm) 6.99 2.29 3.43(parylene-C) (inch) 0.275 0.090 0.135
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.0470cm2 1.361cm 0.0412cm2 0.064219cm3
0.00729in2 0.536in 8,100cmil 0.003919in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
242526272829303132
0.05660.05050.04520.04090.03660.03300.02940.02670.0241
81011131416192123
0.01320.01830.02530.03460.04820.06530.09180.1260.170
333435363738394041
0.02160.01910.01700.01520.01400.01240.01090.00960.00863
263034384247546168
0.2380.3370.4700.6500.8801.241.822.593.50
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
-CM063060
--
CM063125CM063147CM063160CM063173CM063200
-CH063060
--
CH063125CH063147CH063160
--
-CS063060CS063075CS063090CS063125
----
-CK063060CK063075CK063090
-----
-2430365059646980
26607590125147160173200
ID 2.79mm HT 2.79mm
OD 6.35mm / 0.250inch
AL vs NI Curve (60μ, 125μ)
29 ::: Chang Sung Corporation
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD066Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 6.6 2.67 2.54(inch) 0.260 0.105 0.100
After coating (mm) 7.24 2.29 3.18(Epoxy) (inch) 0.285 0.090 0.125
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.0476cm2 1.363cm 0.0412cm2 0.063971cm3
0.00738in2 0.537in 8,100cmil 0.003904in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
252627282930313233
0.05050.04520.04090.03660.03300.02940.02670.02410.0216
101113141619212326
0.01800.02490.03410.04740.06420.09020.1240.1670.233
343536373839404142
303438424754616877
0.01910.01700.01520.01400.01240.01090.00960.008630.00762
0.3300.4610.6370.8621.211.782.533.434.81
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM066026CM066060
--
CM066125CM066147CM066160CM066173CM066200
CH066026CH066060
--
CH066125CH066147CH066160
--
-CS066060CS066075CS066090CS066125
----
-CK066060CK066075CK066090
-----
112632395464697586
26607590125147160173200
ID 2.67mm HT 2.54mm
AL vs NI Curve (60μ, 125μ)
OD 6.6mm / 0.260inch
Magnetic Powder Cores ::: 30
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD067Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 6.6 2.67 4.78(inch) 0.260 0.105 0.188
After coating (mm) 7.32 2.21 5.54(Epoxy) (inch) 0.288 0.087 0.218
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.0920cm2 1.363cm 0.0384cm2 0.1254cm3
0.01426in2 0.537in 7,570cmil 0.007443in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
252627282930313233
0.05050.04520.04090.03660.03300.02940.02670.02410.0216
91112141618202225
0.02230.03120.04310.06050.08260.1170.1620.2200.309
343536373839404142
0.01910.01700.01520.01400.01240.01090.00960.008630.00762
293236404552596674
0.4400.6170.8571.171.642.423.464.706.62
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM067026CM067060
--
CM067125CM067147CM067160CM067173CM067200
CH067026CH067060
--
CH067125CH067147CH067160
--
-CS067060CS067075CS067090CS067125
----
-CK067060CK067075CK067090
-----
21506274103122132144165
26607590125147160173200
ID 2.67mm HT 4.78mm
OD 6.6mm / 0.260inch
AL vs NI Curve (60μ, 125μ)
31 ::: Chang Sung Corporation
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD068Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 6.86 3.96 5.08(inch) 0.270 0.156 0.200
After coating (mm) 7.62 3.45 5.72(Epoxy) (inch) 0.300 0.136 0.225
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.0725cm2 1.65cm 0.0934cm2 0.126009cm3
0.01124in2 0.650in 18,500cmil 0.007693in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
212223242526272829
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
91112141618212326
0.009020.01260.01740.02420.03380.04720.06510.09150.125
303132333435363738
0.02940.02670.02410.02160.01910.01700.01520.01400.0124
293336414652586573
0.1770.2440.3310.4660.6640.9321.291.762.48
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM068026CM068060
--
CM068125CM068147CM068160CM068173CM068200
CH068026CH068060
--
CH068125CH068147CH068160
--
-CS068060CS068075CS068090CS068125
----
-CK068060CK068075CK068090
-----
1433425070818995112
26607590125147160173200
ID 3.96mm HT 5.08mm
AL vs NI Curve (60μ, 125μ)
OD 6.86mm / 0.270inch
Magnetic Powder Cores ::: 32
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD078Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 7.87 3.96 3.18(inch) 0.310 0.156 0.125
After coating (mm) 8.51 3.43 3.81(Epoxy) (inch) 0.335 0.135 0.150
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.0615cm2 1.787cm 0.0922cm2 0.1099cm3
0.00953in2 0.704in 18,200cmil 0.0067in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
212223242526272829
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
91112141618202326
0.00780.01080.01480.02060.02850.03970.05450.07620.104
303132333435363738
0.02940.02670.02410.02160.01910.01700.01520.01400.0124
293336414652586472
0.1460.2010.2720.3820.5430.7601.051.432.01
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM078026CM078060
__
CM078125CM078147CM078160CM078173CM078200
CH078026CH078060
__
CH078125CH078147CH078160
__
_CS078060CS078075CS078090CS078125
____
_CK078060CK078075CK078090
_____
112531375262667383
26607590125147160173200
ID 3.96mm HT 3.18mm
OD 7.87mm / 0.310inch
AL vs NI Curve (60μ, 125μ)
33 ::: Chang Sung Corporation
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD096Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 9.65 4.78 3.18(inch) 0.380 0.188 0.125
After coating (mm) 10.29 4.27 3.81(Epoxy) (inch) 0.405 0.168 0.150
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.0752cm2 2.18cm 0.1429cm2 0.1639cm3
0.01166in2 0.859in 28,200cmil 0.0100in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
91112141618212326
0.00530.00730.01010.01410.01930.02680.03720.05190.0714
282930313233343536
0.03660.03300.02940.02670.02410.02160.01910.01700.0152
293337414651586573
0.1000.1360.1930.2660.3600.5050.7191.011.40
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM096026CM096060
--
CM096125CM096147CM096160CM096173CM096200
CH096026CH096060
--
CH096125CH096147CH096160
--
-CS096060CS096075CS096090CS096125
----
-CK096060CK096075CK096090
-----
112532385363687484
26607590125147160173200
ID 4.78mm HT 3.18mm
AL vs NI Curve (60μ, 125μ)
OD 9.65mm / 0.380inch
Magnetic Powder Cores ::: 34
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD097Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 9.65 4.78 3.96(inch) 0.380 0.188 0.156
After coating (mm) 10.29 4.27 4.57(Epoxy) (inch) 0.405 0.168 0.180
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.0945cm2 2.18cm 0.1429cm2 0.2060cm3
0.01465in2 0.859in 28,200cmil 0.01258in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
91112141618212326
0.005670.007830.01090.01520.02090.02910.04050.05670.0782
282930313233343536
0.03660.03300.02940.02670.02410.02160.01910.01700.0152
293337414651586573
0.1100.1500.2120.2930.3970.5580.7951.121.55
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM097026CM097060
__
CM097125CM097147CM097160CM097173CM097200
CH097026CH097060
__
CH097125CH097147CH097160
__
_CS097060CS097075CS097090CS097125
____
_CK097060CK097075CK097090
_____
1432404866788492105
26607590125147160173200
ID 4.78mm HT 3.96mm
OD 9.65mm / 0.380inch
AL vs NI Curve (60μ, 125μ)
35 ::: Chang Sung Corporation
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD102Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 10.16 5.08 3.96(inch) 0.400 0.200 0.156
After coating (mm) 10.80 4.57 4.57(Epoxy) (inch) 0.425 0.180 0.180
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.1000cm2 2.38cm 0.164cm2 0.2380cm3
0.01550in2 0.906in 32,400cmil 0.0140in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
181920212223242526
0.1090.09800.08790.07850.07010.06320.05660.05050.0452
91012131517202225
0.004420.006130.008470.01180.01640.02260.03150.04390.0614
272829303132333435
0.04090.03660.03300.02940.02670.02410.02160.01910.0170
283235404449556270
0.08460.1190.1620.2300.3170.4300.6050.8621.21
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM102026CM102060
--
CM102125CM102147CM102160CM102173CM102200
CH102026CH102060
--
CH102125CH102147CH102160
--
-CS102060CS102075CS102090CS102125
----
-CK102060CK102075CK102090
-----
1432404866788492105
26607590125147160173200
ID 5.08mm HT 3.96mm
AL vs NI Curve (60μ, 125μ)
OD 10.16mm / 0.400inch
Magnetic Powder Cores ::: 36
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD112Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 11.18 6.35 3.96(inch) 0.440 0.250 0.156
After coating (mm) 11.90 5.89 4.72(Epoxy) (inch) 0.468 0.232 0.186
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.0906cm2 2.69cm 0.273cm2 0.2437cm3
0.01403in2 1.08in 53,800cmil 0.01515in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
161718192021222324
0.1370.1220.1090.09800.08790.07850.07010.06320.0566
91112141618212326
0.002990.004120.005720.007920.01090.01520.02120.02920.0406
252627282930313233
0.05050.04520.04090.03660.03300.02940.02670.02410.0216
293337424652586472
0.05660.07920.1090.1530.2090.2970.4100.5560.782
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM112026CM112060
--
CM112125CM112147CM112160CM112173CM112200
CH112026CH112060
--
CH112125CH112147CH112160
--
CS112026CS112060CS112075CS112090CS112125
----
CK112026CK112060CK112075CK112090
-----
112632385363687485
26607590125147160173200
ID 6.35mm HT 3.96mm
OD 11.18mm / 0.440inch
AL vs NI Curve (60μ, 125μ)
37 ::: Chang Sung Corporation
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD127Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 12.70 7.62 4.75(inch) 0.500 0.300 0.187
After coating (mm) 13.46 6.99 5.51(Epoxy) (inch) 0.530 0.275 0.217
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.114cm2 3.12cm 0.383cm2 0.35568cm3
0.01767in2 1.229in 75,600cmil 0.002172in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
151617181920212223
0.1530.1370.1220.1090.09800.08790.07850.07010.0632
101113151719222528
0.002710.003760.005200.007220.01000.01390.01930.02700.0371
242526272829303132
0.05660.05050.04520.04090.03660.03300.02940.02670.0241
313540455056636977
0.05180.07230.1010.1400.1970.2690.3810.5270.716
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM127026CM127060
--
CM127125CM127147CM127160CM127173CM127200
CH127026CH127060
--
CH127125CH127147CH127160
--
CS127026CS127060CS127075CS127090CS127125
----
CK127026CK127060CK127075CK127090
-----
122734405667727990
26607590125147160173200
ID 7.62mm HT 4.75mm
AL vs NI Curve (60μ, 125μ)
OD 12.70mm / 0.500inch
Magnetic Powder Cores ::: 38
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD166Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 16.51 10.16 6.35(inch) 0.650 0.400 0.250
After coating (mm) 17.40 9.53 7.11(Epoxy) (inch) 0.680 00.375 0.280
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.1920cm2 4.11cm 0.713cm2 0.7891cm3
0.0298in2 1,619in 140,600cmil 0.0438in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
121314151617181920
0.2130.1900.1710.1530.1370.1220.1090.09800.0879
101113151719212427
0.001650.002300.003180.004430.006170.008560.01190.01660.0231
212223242526272829
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
313539444955626977
0.03230.04530.06260.08760.1230.1720.2390.3360.460
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM166026CM166060
--
CM166125CM166147CM166160CM166173CM166200
CH166026CH166060
--
CH166125CH166147CH166160
--
CS166026CS166060CS166075CS166090CS166125
----
CK166026CK166060CK166075CK166090
-----
15354352728892104115
26607590125147160173200
ID 10.16mm HT 6.35mm
OD 16.51mm / 0.650inch
AL vs NI Curve (60μ, 125μ)
39 ::: Chang Sung Corporation
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD172Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 17.27 9.65 6.35(inch) 0.680 0.380 0.250
After coating (mm) 18.03 9.02 7.11(Epoxy) (inch) 0.710 0.355 0.280
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.232cm2 4.14cm 0.683cm2 0.9605cm3
0.0360in2 1.63in 126,000cmil 0.05868in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
121314151617181920
0.2130.1900.1710.1530.1370.1220.1090.09800.0879
910121416 18202326
0.001610.002250.003110.004340.006060.008430.01180.01640.0228
212223242526272829
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
293337414752586573
0.03190.04490.06210.08690.1220.1710.2370.3340.458
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM172026CM172060
--
CM172125CM172147CM172160CM172173CM172200
CH172026CH172060
--
CH172125CH172147CH172160
--
CS172026CS172060CS172075CS172090CS172125
----
CK172026CK172060CK172075CK172090
-----
1943536489105114123142
26607590125147160173200
ID 9.65mm HT 6.35mm
AL vs NI Curve (60μ, 125μ)
OD 17.27mm / 0.680inch
Magnetic Powder Cores ::: 40
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD203Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 20.32 12.70 6.35(inch) 0.800 0.500 0.250
After coating (mm) 21.1 12.07 7.11(Epoxy) (inch) 0.830 0.475 0.280
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.226cm2 5.09cm 1.14cm2 1.1510cm3
0.035in2 2.01in 225,600cmil 0.07035in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
121314151617181920
0.2130.1900.1710.1530.1370.1220.1090.09800.0879
131517192225283235
0.002210.003070.004240.005900.008220.01140.01590.02220.0308
212223242526272829
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
404550566371798998
0.04300.06040.08340.1170.1640.2300.3180.4480.614
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM203026CM203060
--
CM203125CM203147CM203160CM203173CM203200
CH203026CH203060
--
CH203125CH203147CH203160
--
CS203026CS203060CS203075CS203090CS203125
----
CK203026CK203060CK203075CK203090
-----
1432414968818796109
26607590125147160173200
ID 12.70mm HT 6.35mm
OD 20.32mm / 0.800inch
AL vs NI Curve (60μ, 125μ)
41 ::: Chang Sung Corporation
TORO
IDAL M
AGNETIC POW
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RES
OD229Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 22.86 13.97 7.62(inch) 0.900 0.550 0.300
After coating (mm) 23.62 13.39 8.38(Epoxy) (inch) 0.930 0.527 0.330
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.331cm2 5.67cm 1.41cm2 1.8771cm3
00.0513in2 2.23in 277,700cmil 0.11455in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
121314151617181920
0.2130.1900.1710.1530.1370.1220.1090.09800.0879
151719222528313540
0.002760.003840.005320.007420.01040.01440.02020.02810.0392
212223242526272829
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
4550566371798899109
0.05480.07710.1070.1500.2100.2950.4090.5770.791
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM229026CM229060
--
CM229125CM229147CM229160CM229173CM229200
CH229026CH229060
--
CH229125CH229147CH229160
--
CS229026CS229060CS229075CS229090CS229125
----
CK229026CK229060CK229075CK229090
-----
1943546590106115124144
26607590125147160173200
ID 13.97mm HT 7.62mm
AL vs NI Curve (60μ, 125μ)
OD 22.86mm / 0.900inch
Magnetic Powder Cores ::: 42
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD234Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 23.57 14.40 8.89(inch) 0.928 0.567 0.350
After coating (mm) 24.30 13.77 9.70(Epoxy) (inch) 0.956 0.542 0.382
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.388cm2 5.88cm 1.49cm2 2.2814cm3
0.061in2 2.32in 293,800cmil 0.1415in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
121314151617181920
0.2130.1900.1710.1530.1370.1220.1090.09800.0879
151720222529323641
0.003070.004290.005950.008320.01160.01620.02270.03180.0443
212223242526272829
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
46525865738191101112
0.06200.08740.12100.1700.2380.3360.4650.6570.901
Available CoresPart No.
MPP High Flux Sendust Mega FluxPerm.
(μ)
AL
(nH/N2)
CM234026CM234060
--
CM234125CM234147CM234160CM234173CM234200
CH234026CH234060
--
CH234125CH234147CH234160
--
CS234026CS234060CS234075CS234090CS234125
----
CK234026CK234060CK234075CK234090
-----
22516376105124135146169
26607590125147160173200
ID 14.40mm HT 8.89mm
OD 23.57mm / 0.928inch
AL vs NI Curve (60μ, 125μ)
43 ::: Chang Sung Corporation
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD270Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 26.92 14.73 11.18(inch) 1.060 0.580 0.440
After coating (mm) 27.70 14.10 11.99(Epoxy) (inch) 1.090 0.555 0.472
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.654cm2 6.35cm 1.56cm2 4.154cm3
0.1014in2 2.50in 308,000cmil 0.2536in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
121314151617181920
0.2130.1900.1710.1530.1370.1220.1090.09800.0879
161820232629333742
0.003670.005140.007150.01000.01410.01970.02760.03870.0541
212223242526272829
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
47535966748393104115
0.07590.1070.1490.2090.2940.4140.5750.8121.11
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM270026CM270060
--
CM270125CM270147CM270160CM270173CM270200
CH270026CH270060
--
CH270125CH270147CH270160
--
CS270026CS270060CS270075CS270090CS270125
----
CK270026CK270060CK270075CK270090
-----
327594113157185201217251
26607590125147160173200
ID 14.73mm HT 11.18mm
AL vs NI Curve (60μ, 125μ)
OD 26.92mm / 1.060inches
Magnetic Powder Cores ::: 44
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD330Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 33.02 19.94 10.67(inch) 1.300 0.785 0.420
After coating (mm) 33.83 19.30 11.61(Epoxy) (inch) 1.332 0.760 0.457
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
00.672cm2 8.15cm 2.93cm2 5.4768cm3
0.1042in2 3.21in 577,600cmil 0.3345in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
121314151617181920
0.2130.1900.1710.1530.1370.1220.1090.09800.0879
232629323741465258
0.005170.007220.01000.01400.01970.02740.03840.05380.0750
212223242526272829
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
66748292103115128143159
0.1050.1480.2060.2890.4060.5720.7941.121.54
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM330026CM330060
--
CM330125CM330147CM330160CM330173
-
CH330026CH330060
--
CH330125CH330147CH330160
--
CS330026CS330060CS330075CS330090CS330125
----
CK330026CK330060CK330075CK330090
-----
28617691127150163176203
26607590125147160173200
ID 19.94mm HT 10.67mm
OD 33.02mm / 1.300inches
AL vs NI Curve (60μ, 125μ)
45 ::: Chang Sung Corporation
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD343Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 34.29 23.37 8.89(inch) 1.350 0.920 0.350
After coating (mm) 35.20 22.60 9.83(Epoxy) (inch) 1.385 0.888 0.387
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.454cm2 8.95cm 4.01cm2 4.0633cm3
0.0704in2 3.53in 788,500cmil 0.2485in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
121314151617181920
0.2130.1900.1710.1530.1370.1220.1090.09800.0879
273034384349556169
0.005330.007400.01020.01430.01990.02770.03880.05410.0754
212223242526272829
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
778796108121135150168186
0.1050.1480.2060.2880.4040.5690.7891.111.53
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM343026CM343060
--
CM343125CM343147CM343160CM343173
-
CH343026CH343060
--
CH343125CH343147CH343160
--
CS343026CS343060CS343075CS343090CS343125
----
CK343026CK343060CK343075CK343090
-----
163847577993101109126
26607590125147160173200
ID 23.37mm HT 8.89mm
AL vs NI Curve (60μ, 125μ)
OD 34.29mm / 1.350inches
Magnetic Powder Cores ::: 46
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD358Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 35.81 22.35 10.46(inch) 1.410 0.880 0.412
After coating (mm) 36.70 21.50 11.28(Epoxy) (inch) 1.445 0.848 0.444
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
0.678cm2 8.98cm 3.64cm2 6.0884cm3
0.1051in2 3.54in 719,100cmil 0.3721in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
121314151617181920
0.2130.1900.1710.1530.1370.1220.1090.09800.0879
252932374146525865
0.005790.008090.01120.01570.02200.03060.04290.06000.0837
212223242526272829
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
748292103115129143160177
0.1170.1660.2290.3220.4520.6370.8851.251.71
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM358026CM358060
--
CM358125CM358147CM358160CM358173
-
CH358026CH358060
--
CH358125CH358147CH358160
--
CS358026CS358060CS358075CS358090CS358125
----
CK358026CK358060CK358075CK358090
-----
24567084117138150162187
26607590125147160173200
ID 22.35mm HT 10.46mm
OD 35.81mm / 1.410inches
AL vs NI Curve (60μ, 125μ)
47 ::: Chang Sung Corporation
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RES
OD400Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 39.88 24.13 14.48(inch) 1.570 0.950 0.570
After coating (mm) 40.70 23.30 15.37(Epoxy) (inch) 1.602 0.918 0.605
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
1.072cm2 9.84cm 4.27cm2 10.5485cm3
0.1662in2 3.88in 842,700cmil 0.6449in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
101112131415161718
0.2130.1900.1710.1530.1370.1220.1090.09800.0879
222528313540455057
0.003890.005450.007620.01070.01480.02080.02920.04080.0574
192021222324252627
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
64718090100112125140155
0.08040.1120.1580.2230.3090.4350.6110.8621.20
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM400026CM400060
--
CM400125CM400147CM400160CM400173
-
CH400026CH400060
--
CH400125CH400147CH400160
--
CS400026CS400060CS400075CS400090CS400125
----
CK400026CK400060CK400075CK400090
-----
3581101121168198215233269
26607590125147160173200
ID 24.13mm HT 14.48mm
AL vs NI Curve (60μ, 125μ)
OD 39.88mm / 1.570inches
Magnetic Powder Cores ::: 48
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD467Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 46.74 24.13 18.03(inch) 1.840 0.950 0.710
After coating (mm) 47.60 23.30 18.92(Epoxy) (inch) 1.875 0.918 0.745
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
1.990cm2 10.74cm 4.27cm2 21.373cm3
0.308in2 4.23in 842,700cmil 1.303in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
101112131415161718
0.2130.1900.1710.1530.1370.1220.1090.09800.0879
222528313540455057
0.04880.06880.09660.01360.01890.02670.03750.05260.0740
192021222324252627
0.07850.07010.06320.05660.05050.04520.04090.03660.0330
64718090100112125140155
0.1040.1460.2050.2900.4030.5670.7981.131.57
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM467026CM467060
--
CM467125CM467147CM467160
--
CH467026CH467060
--
CH467125----
CS467026CS467060CS467075CS467090CS467125
----
CK467026CK467060CK467075CK467090
-----
59135169202281330360
--
26607590125147160173200
ID 24.13mm HT 18.03mm
OD 46.74mm / 1.840inches
AL vs NI Curve (60μ, 125μ)
49 ::: Chang Sung Corporation
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RES
OD468Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 46.74 28.70 15.24(inch) 1.840 1.130 0.600
After coating (mm) 47.60 27.90 16.13(Epoxy) (inch) 1.875 1.098 0.635
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
1.340cm2 11.63cm 6.11cm2 15.584cm3
0.208in2 4.58in 1,206,000cmil 0.9526in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
101112131415161718
0.2670.2380.2130.1900.1710.1530.1370.1220.109
263034384348546168
0.005050.007080.00990.01390.01930.02700.03800.05300.0745
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
778696108120134150168186
0.1040.1460.2050.2900.4020.5650.7951.121.56
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM468026CM468060
--
CM468125CM468147CM468160
--
CH468026CH468060
--
CH468125----
CS468026CS468060CS468075CS468090CS468125
----
CK468026CK468060CK468075CK468090
-----
3786107128178210228
--
26607590125147160173200
ID 28.70mm HT 15.24mm
AL vs NI Curve (60μ, 125μ)
OD 46.74mm / 1.840inches
Magnetic Powder Cores ::: 50
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD508Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 50.80 31.75 13.46(inch) 2.000 1.250 0.530
After coating (mm) 51.70 30.90 14.35(Epoxy) (inch) 2.035 1.218 0.565
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
1.251cm2 12.73cm 7.50cm2 15.929cm3
0.194in2 5.02in 1,484,000cmil 0.9739in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
101112131415161718
0.2670.2380.2130.1900.1710.1530.1370.1220.109
303338434854606876
0.005390.007540.01050.01470.02050.02870.04020.05620.0788
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
8595107120133149167186207
0.1100.1540.2160.3060.4240.5960.8381.181.64
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM508026CM508060
--
CM508125CM508147CM508160
--
CH508026CH508060
--
CH508125----
CS508026CS508060CS508075CS508090CS508125
----
CK508026CK508060CK508075CK508090
-----
327391109152179195
--
26607590125147160173200
ID 31.75mm HT 13.46mm
OD 50.80mm / 2.000inches
AL vs NI Curve (60μ, 125μ)
51 ::: Chang Sung Corporation
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RES
OD571Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 57.15 26.39 15.24(inch) 2.250 1.039 0.600
After coating (mm) 58.00 25.60 16.10(Epoxy) (inch) 2.285 1.007 0.635
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
2.29cm2 12.5cm 5.14cm2 28.6cm3
0.355in2 4.93in 1,014,049cmil 1.75in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
101112131415161718
0.2670.2380.2130.1900.1710.1530.1370.1220.109
263034394349556270
0.005510.008010.01150.01650.02300.03300.04690.06640.0948
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
788899111124138156174193
0.1330.1890.2690.3810.5340.7521.071.512.10
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM571026CM571060
--
CM571125CM571147CM571160
--
CH571026CH571060
--
CH571125----
CS571026CS571060CS571075CS571090CS571125
----
CK571026CK571060CK571075CK571090
-----
60138172206287306333
--
26607590125147160173200
ID 26.39mm HT 15.24mm
AL vs NI Curve (60μ, 125μ)
OD 57.15mm / 2.250inches
Magnetic Powder Cores ::: 52
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD572Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 57.15 35.56 13.97(inch) 2.250 1.400 0.550
After coating (mm) 58.00 34.70 14.86(Epoxy) (inch) 2.285 1.368 0.585
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
1.444cm2 14.30cm 9.48cm2 20.65cm3
0.244in2 5.63in 1,871,000cmil 1.261in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
101112131415161718
0.2670.2380.2130.1900.1710.1530.1370.1220.109
374248546068768596
0.006440.009200.01330.01880.02630.03760.05310.07460.107
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
108120135152169189212237263
0.1520.2110.3000.4280.5960.8451.191.692.35
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM572026CM572060
--
CM572125CM572147CM572160
--
CH572026CH572060
--
CH572125----
CS572026CS572060CS572075CS572090CS572125
----
CK572026CK572060CK572075CK572090
-----
337594112156185200
--
26607590125147160173200
ID 35.56mm HT 13.97mm
OD 57.15mm / 2.250inches
AL vs NI Curve (60μ, 125μ)
53 ::: Chang Sung Corporation
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RES
OD610Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 62.0 32.6 25.0(inch) 2.441 1.283 0.984
After coating (mm) 63.1 31.37 26.27(Epoxy) (inch) 2.484 1.235 1.034
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
3.675cm2 14.37cm 7.73cm2 52.81cm3
0.570in2 5.66in 1,525,610cmil 3.223in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
101112131415161718
0.2670.2380.2130.1900.1710.1530.1370.1220.109
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM610026CM610060
--
CM610125----
CH610026CH610060
--
CH610125----
CS610026CS610060CS610075CS610090CS610125
----
CK610026CK610060CK610075CK610090
-----
83192240288400
----
26607590125147160173200
ID 32.6mm HT 25.0mm
AL vs NI Curve (60μ, 125μ)
OD 62.0mm / 2.441inches
N A N A
Magnetic Powder Cores ::: 54
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD740Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 74.1 45.3 35.0(inch) 2.917 1.783 1.378
After coating (mm) 75.2 44.07 36.27(Epoxy) (inch) 2.961 1.735 1.428
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
5.040cm2 18.38cm 15.25cm2 92.64cm3
0.781in2 7.24in 3,009,310cmil 5.653in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
101112131415161718
0.2670.2380.2130.1900.1710.1530.1370.1220.109
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM740026CM740060
--
CM740125----
CH740026CH740060
--
CH740125----
CS740026CS740060CS740075CS740090CS740125
----
CK740026CK740060CK740075CK740090
-----
89206257309429
----
26607590125147160173200
ID 45.3mm HT 35.0mm
OD 74.1mm / 2.917inches
AL vs NI Curve (60μ, 125μ)
N A N A
55 ::: Chang Sung Corporation
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RES
OD777Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 77.80 49.23 12.70(inch) 3.063 1.938 0.50
After coating (mm) 78.90 48.0 13.97(Epoxy) (inch) 3.108 1.888 0.550
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
1.770cm2 20.0cm 17.99cm2 34.770cm3
0.274in2 7.72in 3,550,000cmil 2.122in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
101112131415161718
0.2670.2380.2130.1900.1710.1530.1370.1220.109
536067768495106119134
0.01130.01620.02280.03250.04540.06460.09120.1290.183
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
150168188211235263295330365
0.2580.3640.5140.7321.021.301.842.613.62
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM777026CM777060
--
CM777125----
CH777026CH777060
--
CH777125----
CS777026CS777060CS777075CS777090CS777125
----
CK777026CK777060CK777075CK777090
-----
306885102142
----
26607590125147160173200
ID 49.23mm HT 12.70mm
AL vs NI Curve (60μ, 125μ)
OD 77.8mm / 3.063inches
Magnetic Powder Cores ::: 56
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD778Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 77.80 49.23 15.9(inch) 3.063 1.938 0.626
After coating (mm) 78.90 48.0 17.2(Epoxy) (inch) 3.108 1.888 0.677
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
2.270cm2 20.0cm 17.99cm2 43.531cm3
0.352in2 7.72in 3,550,000cmil 2.656in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
101112131415161718
0.2670.2380.2130.1900.1710.1530.1370.1220.109
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM778026CM778060
--
CM778125----
CH778026CH778060
--
CH778125----
CS778026CS778060CS778075CS778090CS778125
----
CK778026CK778060CK778075CK778090
-----
3785107128178
----
26607590125147160173200
ID 49.23mm HT 15.9mm
OD 77.8mm / 3.063inches
AL vs NI Curve (60μ, 125μ)
N A N A
57 ::: Chang Sung Corporation
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RES
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
1.83cm2 24.10cm 32.92cm2 44,103cm3
0.284in2 9.46in 6,00,140cmil 2.691in3
OD888Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 88.90 66.00 15.90(inch) 3.500 2.598 0.626
After coating (mm) 90.03 64.74 17.20(Epoxy) (inch) 3.544 2.549 0.677
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
101112131415161718
0.2670.2380.2130.1900.1710.1530.1370.1220.109
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
Available CoresPart No.
MPP High Flux Sendust Mega FluxPerm.
(μ)
AL
(nH/N2)
CM888026CM888060
--
CM888125----
CH888026CH888060
--
CH888125----
CS888026CS888060CS888075CS888090CS888125
----
CK888026CK888060CK888075CK888090
-----
24577185119
26607590125147160173200
AL vs NI Curve (60μ, 125μ)
N A N A
OD 88.9mm / 3.500inches
ID 66.0mm HT 15.9mm
Magnetic Powder Cores ::: 58
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD1016Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 101.6 57.2 16.5(inch) 3.980 2.252 0.650
After coating (mm) 103.1 55.7 17.8(Epoxy) (inch) 4.059 2.193 0.701
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
3.522cm2 24.27cm 24.36cm2 85.495cm3
0.546in2 9.56in 4,807,425cmil 5.217in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
0.2670.2380.2130.1900.1710.1530.1370.1220.109
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
Available CoresPart No.
MPP High Flux Sendust Mega FluxPerm.
(μ)
AL
(nH/N2)
CM1016026CM1016060 CM1016125
----
CH1016026CH1016060CH1016125
----
CS1016026CS1016060CS1016125
----
CK1016026CK1016060
-----
48112228
----
2660 125147160173200
AL vs NI Curve (60μ, 125μ)
N A N A
101112131415161718
ID 57.2mm HT 16.5mm
OD 101.6mm / 3.980inches
59 ::: Chang Sung Corporation
TORO
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AGNETIC POW
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RES
OD1325Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 132.5 78.6 25.4(inch) 5.217 3.094 1.000
After coating (mm) 134.2 77.0 26.8(Epoxy) (inch) 5.283 3.032 1.055
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
6.71cm2 32.42cm 46.61cm2 217.58cm3
1.040in2 12.77in 9,199,089cmil 13.28in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
101112131415161718
0.2670.2380.2130.1900.1710.1530.1370.1220.109
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM1325026CM1325060CM1325125
----
CH1325026CH1325060CH1325125
----
CS1325026CS1325060 CS1325125
----
CK1325026CK1325060
-----
68156325
2660125147160173200
ID 78.6mm HT 25.4mm
AL vs NI Curve (60μ, 125μ)
OD 132.5mm / 5.217inches
N A N A
Magnetic Powder Cores ::: 60
TORO
IDAL M
AGNETIC POW
DER CO
RES
OD1625Core Dimensions
OD(max) ID(min) HT(max)
Before coating (mm) 165.0 88.9 25.4(inch) 6.496 3.500 1.000
After coating (mm) 167.2 86.9 27.3(Epoxy) (inch) 6.583 3.421 1.075
Magnetic DimensionsCross Section Path Length Window Area Volume
(A) ( ) (Wa) (V)
9.46cm2 38.65cm 59.31cm2 365.63cm3
1.466in2 15.22in 11,704,978cmil 22.31in3
Winding Information
Single layer winding with 1 inch leads
AWG Wire Single Layer AWG Wire Single Layer
No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,
0.2670.2380.2130.1900.1710.1530.1370.1220.109
192021222324252627
0.09800.08790.07850.07010.06320.05660.05050.04520.0409
Available CoresPart No.
MPP High Flux Sendust Mega Flux
Perm.
(μ)
AL
(nH/N2)
CM1625026CM1625060CM1625125
----
CH1625026CH1625060CH1625125
----
CS1625026CS1625060 CS1625125
----
CK1625026CK1625060
-----
80184 384
----
2660125147160173200
ID 88.9mm HT 25.4mm
OD 165.0mm / 6.496inches
AL vs NI Curve (60μ, 125μ)
N A N A
101112131415161718
61 ::: Chang Sung Corporation
MAGNETIC POWDER CORES NOTES
Magnetic Powder Cores ::: 62Magnetic Powder Cores ::: 62
SPECIALMAGNETIC
POWDERCORES
63 ::: Chang Sung Corporation
ELLIPSE CORES
SPECIAL MAGNETIC PO
WD
ER CORES
• Shorter wire length than rectangular post
• Good DC Bias characteristics
• Larger energy storage capacity
• Low core loss at high frequency
• Choke filter for solar cell inverters
• Boost Inductor for solar cell inverters
Features
Applications
Product Identification
Post Ellipse Cores
Post
Plate
LK3515-20
LK3515-25
LK3520-20
LK3520-25
Part No.
35
35
35
35
15
15
20
20
7.5
7.5
7.5
7.5
20
25
20
25
Dimensions Cross SectionArea(cm2)
ALength(mm)
BWidth(mm)
RCRadius(mm)
DHeight(mm)
LS(Sendust Ellipse Core), LH(High Flux Ellipse Core) and customized designs are also available.
4.77
4.77
6.52
6.52
Plate Ellipse Cores
LK5035-13LK5035-18LK6035-13LK6035-18LK7035-13LK7035-18
Part No.
505060606070
353535353535
7.57.57.57.57.57.5
Dimensions Cross SectionArea(cm2)
ALength(mm)
BWidth(mm)
RCRadius(mm)
DHeight(mm)
4.776.524.776.524.776.52
LK 35 15 - 20 C
Height : 20mm
Length : 35mm
Width : 15mm
Mega Flux Ellipse Core LK:Mega Flux , LS:Sendust
Available perm. A:26μ, B:40μ, C:60μ
Available size : 20mm~25mm
Permeability : 60μ
LK 60 35 - 13 C
Height : 13mm
Length : 60mm
Width : 35mm
Ellipse Core LK:Mega Flux
Available perm. A:26μ, B:40μ, C:60μ
Available size : 13mm~18mm
Permeability : 60μ
13.518.513.518.513.518.5
Magnetic Powder Cores ::: 64
Permeability vs DC Bias Curves
ELLIPSE CORES ASSEMBLY
SPECIAL MAGNETIC PO
WD
ER CORES
PLATEPart No. Part No. 1 LEG
STACK
DimensionsPOSTPath
Length(cm)
Cross Section
Area(cm2)
Window Area(cm2)
AL value (nH/N2) 12%
026μ 040μ 060μ
ALength(mm)
BWidth(mm)
CHeight(mm)
DInner
Height(mm)
LK5035-13
LK5035-18
LK3515-20LK3515-25LK3515-20
LK3520-20LK3520-25LK3520-20
223
223
16.4718.4716.04
18.0420.0422.04
4.774.774.77
6.526.526.52
81012
456
11310191
158141127
146130117
204182164
218195176
306273245
505050
505050
353535
353535
677787
778797
405060
405060
202020
101010
EInner
Length(mm)
LK6035-13
LK6035-18
LK7035-13
LK7035-18
LK3515-20LK3515-25LK3515-20
LK3520-20LK3520-25LK3520-20
LK3515-20LK3515-25LK3515-20
LK3520-25LK3520-20LK3520-25
223
223
223
223
18.4720.4722.47
18.0420.0422.04
20.4722.4724.47
20.0422.0424.04
4.774.774.77
6.526.526.52
4.774.774.77
6.526.526.52
121518
81012
162024
121518
1019183
141127115
918376
127115106
130117107
182164149
11710798
164149136
195176160
273245223
176160147
245223204
606060
606060
707070
707070
353535
353535
353535
353535
677787
778797
677787
778797
405060
405060
405060
405060
303030
202020
404040
303030
65 ::: Chang Sung Corporation
BLOCK CORES
SPECIAL MAGNETIC PO
WD
ER CORES
• Large energy storage capacity
• No magnetic flux leakage
• Good temperature stability
• Low core loss at high frequency
• High inductance choke coils
• Flyback transformers
• Multiple circuit choke coils
• Output chokes for SMPS
Features
Applications
Product Identification
BK 6 3 20 - 060
Height : 20mm
Length : 60mm Available size : 50mm~80mm
Width : 30mm
Mega Flux Block Core BH:High Flux, BS:Sendust
Available perm. 26,40,60μ
Available HT : 15mm~20mm
Permeability :60μ
BK5315BK5320BK6315
BK6320BK7315BK7320
BK8315BK8320
Part No.
50.550.560.5
60.570.570.5
80.580.5
Dimensions(mm)
A B C
30.330.330.3
30.330.330.3
30.330.3
152015
201520
1520
BS(Sendust Block Core), BH(High Flux Core) and customized designs are also available.
Cross Section
Area(cm2)
4.56
4.5
64.56
4.56
Magnetic Powder Cores ::: 66
SPECIAL MAGNETIC PO
WD
ER CORES
BK5315BK5320BK6315BK6320BK7315BK7320BK8315BK8320
UnitPart No.
Assembled(L x W x H mm)
SectionalArea(cm2)
WindowArea(cm2)
Path Length(cm)
AL value (nH/N2) 12%
026μ 040μ 060μ
80 x 50 x 3090 x 50 x 3090 x 60 x 30100 x 60 x 30100 x 70 x 30110 x 70 x 30110 x 80 x 30120 x 80 x 30
18.7118.2822.7122.2826.7126.2830.7130.28
1524181228214032
33
4.56
4.56
4.56
951307910767915878
1211651001358511574100
181247149203127172110149
BLOCK CORES ASSEMBLY
Permeability vs DC Bias Curves
CYLINDER+ROUND BLOCK CORES
SPECIAL MAGNETIC PO
WD
ER CORES
• Large energy storage capacity
• Low core loss at high frequency
• Power inductor for large currents
• Buck/ Boost inductor for inverters
Features
Applications
Product Identification
CK30 30 - 060
OD : 30mm
HT : 30mm
Available size 24mm ~ 60mm
Mega Flux Cylinder Core CS : Sendust, CH : High Flux
RBK 54 20 - 15 C
Height : 15mm
Length : 54mm
Width : 20mm
Round Block Core RBK:Mega Flux
CS(Sendust Cylinder Core), CH(High Flux Cylinder Core) and customized designs are also available
Available perm. A:26μ, B:40μ, C:60μ
Available size : 13mm~18mm
Permeability :60μ
Available perm. A:26μ, B:40μ, C:60μPermeability :60μ
Post Cylinder Cores
CK2020CK2424CK2525CK2828CK3030CK3035CK6030
CylinderPart No.
RBK5420-15RBK6424-18RBK6725-19RBK7428-21RBK8030-23RBK8030-23
-
Plate
20242527303060
Dimensions Cross SectionArea(cm2)
OD(mm)
2024252730
34.730
HT(mm)
3.144.524.916.007.077.0728.27
Plate Round Block Core
RBK5420-15RBK6424-18RBK6725-19RBK7428-21RBK8030-23
PlatePart No.
CK2020CK2424CK2525CK2828CK3030
Post
5464677480
Dimensions Cross SectionArea(cm2)
ALength(mm)
2024252730
BWidth(mm)
10.012.012.513.715.0
RCRadius(mm)
15.718.819.621.723.5
DHeight(mm)
3.144.524.916.007.07
Post
Plate
67 ::: Chang Sung Corporation
Magnetic Powder Cores ::: 68
SPECIAL MAGNETIC PO
WD
ER CORES
RBK5420-15
RBK6424-18
RBK6725-19
RBK7428-21
RBK8030-23
PlatePart No.
CK2020
CK2424
CK2525
CK2828
CK3030
Part No.
123123123123123
1 LEGSTACK
DimensionsCylinderPath
Length(cm)
Cross SectionArea(cm2)
Window Area(cm2)
AL value (nH/N2) 12%
026μ 040μ 060μ
545454646464676767747474808080
202020242424252525
27.527.527.5303030
51.471.491.461.685.6109.664.289.2114.271.499.4127.4
77107137
204060244872255075285684306090
141414161616171717191919202020
12.4116.4120.4114.7219.5224.3215.4120.4125.4117.1322.7328.3318.424.430.4
3.143.143.144.524.524.524.914.914.916.006.006.007.077.077.07
2.85.68.43.847.6811.524.258.5
12.755.3210.6415.96
61218
997560120907212494751361038315011391
12796771541169316012197176133106193146117
191144116232175140240181146264199160290218175
ALength(mm)
BWidth(mm)
CHeight(mm)
DInner
Height(mm)
EInner
Length(mm)
CYLINDER ASSEMBLY
DC Bais Characteristics
69 ::: Chang Sung Corporation
Product Identification
EE CORES
SPECIAL MAGNETIC PO
WD
ER CORES
• Large energy storage capacity
• No magnetic flux leakage
• Good temperature stability
• Low core loss at high frequency
• High inductance choke coils
• Flyback transformers
• Multiple circuit choke coils
• Output chokes for SMPS
Features
Applications
ES 43 21 A - 060
Height of E core
Length : 43mm Available size : 19.0mm~80.0mm
Available size : 8.0mm~38.1mmWidth : 21mm
Sendust E core EK:Mega Flux
Available perm. 26, 40, 60, 90μPermeability :60μ
ES 1908AES 2510AES 3015A
ES 3515AES 4117AES 4321A
ES 4321BES 4321CES 5528A
ES 5528BES 6533AES 7228AES 8038A
Part No.
19.325.130.1
34.540.942.8
42.842.854.9
54.965.172.480.0
Dimensions(mm) Path Length(cm)
Cross SectionArea(cm2)
AL value (nH/N2) 12%
A B C D(min) E(min) F L(nom) M(min) 026μ 040μ 060μ 090μ
8.19.615.0
14.116.521.1
21.121.127.6
27.632.527.938.1
4.86.57.1
9.312.510.8
15.420.020.6
24.627.019.019.8
5.56.29.7
9.610.415.0
15.015.018.5
18.522.217.828.1
13.918.819.5
25.328.330.4
30.430.437.5
37.544.252.659.3
4.86.17.0
9.312.511.7
11.711.716.8
16.819.719.119.8
2.33.05.1
4.46.05.9
5.95.98.4
8.410.09.59.9
4.76.36.4
7.97.99.5
9.59.510.3
10.312.116.919.8
4.014.856.56
6.947.759.84
9.849.8412.30
12.3014.7013.7018.50
0.2280.3850.601
0.8401.5201.280
1.8302.3703.500
4.1705.4003.6803.890
263933
568856
80104116
138162130103
355246
7511976
108140157
187230173145
487071
102163105
150194219
261300236190
6910092
146234151
217281
EK(Mega Flux EE Core) and customized designs are also available.
Magnetic Powder Cores ::: 70
Product Identification
EER CORESSPECIAL M
AGNETIC POW
DER CO
RES
• Large energy storage capacity
• No magnetic flux leakage
• Good temperature stability
• Excellent DC bias characteristics
Features
• Power inductor for large currents
• Multiple circuit choke coils
• Output chokes for SMPS
Applications
HER 4013 B-060
Height of EER core
Length : 40mm Available size : 25mm~49mm
Available size : 7mm~17mmWidth : 13mm
High Flux EER Core KER :Mega Flux , SER : Sendust
Available perm. 26, 40, 60μPermeability :60μ
HER 2507AHER 2507BHER 3010A
HER 3511AHER 3511BHER 4013A
HER 4013BHER 4215AHER 4215B
HER 4917AHER 4917B
Part No.
25.525.530.6
35.035.040.0
40.042.042.0
49.049.0
Dimensions(mm) Path Length(cm)
Cross SectionArea(cm2)
AL value (nH/N2) 12%
A B C D E F 026μ 040μ 060μ
9.311.015.8
15.820.717.4
22.422.425.4
18.824.7
7.57.59.8
11.311.313.3
13.315.515.5
17.217.2
7.57.59.8
11.311.313.3
13.315.515.5
17.217.2
19.819.822.0
25.625.629.0
29.029.429.4
36.536.5
6.27.911
9.814.710.4
15.415.418.4
12.218.1
5.105.788.66
8.3010.279.13
11.1310.6411.84
9.5711.93
0.4500.4500.754
1.0781.0781.491
1.4912.0262.026
2.3532.353
393438
574672
598475
9979
534753
786399
81115103
136109
736572
10887
135
111158142
185149
KER(Mega Flux EER Core), SER(Sendust EER Core)and customized designs are also available.
71 ::: Chang Sung Corporation
EQ CORES
SPECIAL MAGNETIC PO
WD
ER CORES
• Small dimensions for large currents
• No magnetic flux leakage
• Excellent DC bias characteristics
• Good temperature stability
• Large energy storage capacity
• Small dimension DC/DC converters
• Large current choke coils
• Smoothing choke coils
• CPU cores for lap-top computers
Features
Applications
Product Identification
KEQ 41 28A-040
Height of EQ core
Length : 40mm Available size : 21mm~ 65mm
Width : 28mm
Mega Flux EQ core HEQ : High Flux, SEQ : Sendust
Available perm. 26, 40, 60μPermeability :40μ
KEQ 2014AKEQ 2014BKEQ 2619A
KEQ 2619BKEQ 3222AKEQ 3222B
KEQ 3626AKEQ 4128AKEQ 5032A
Part No.
20.520.526.5
26.532.032.0
36.041.550.0
Dimensions(mm) Path Length(cm)
Cross SectionArea(cm2)
AL value (nH/N2) 12%
A B C D E F 026μ 040μ 060μ
14.014.019.0
19.022.022.0
26.028.032.0
8.110.110.1
12.410.315.2
17.419.925.0
8.88.812.0
12.013.513.5
14.414.920.0
18.018.022.6
22.627.627.6
32.036.544.0
5.77.76.8
9.16.611.5
13.415.419.5
4.525.325.47
6.396.037.99
9.4711.5213.34
0.6080.6081.198
1.1981.5231.523
1.8081.9973.141
443772
618362
625777
6857110
9412796
9687118
10186165
141190144
144131178
HEQ(High Flux EQ Core), SEQ(Sendust EQ core) and customized designs are also available.
Magnetic Powder Cores ::: 72
ER CORESSPECIAL M
AGNETIC POW
DER CO
RES
• Small dimensions for large currents
• No magnetic flux leakage
• Excellent DC bias characteristics
• Good temperature stability
• Large energy storage capacity
Features
• Small dimension DC/DC converters
• Large current choke coils
• Smoothing choke coils
• CPU cores for lap-top computers
Applications
Product Identification
RH12 44 SC
Shape Number
Length : 12mm Available size 8mm ~15mm
Height : 4.4mm
High Flux ER core RK : Mega Flux
RH0721SCRH0725SCRH1028SC
RH1034SCRH1237SCRH1244SC
RH1539SCRH1549SC
Part No.
7.67.610.1
10.112.712.7
15.215.2
Dimensions(mm) Path Length(cm)
Cross SectionArea(cm2)
AL value (nH/N2) 15%A B C D E F
2.12.52.8
3.43.74.4
3.94.9
2.882.883.85
3.854.854.85
5.765.76
6.56.58.65
8.6510.810.8
12.9612.96
1.151.551.75
2.352.453.15
2.353.35
2.822.823.76
3.764.74.7
5.645.64
1.391.551.73
1.972.192.47
2.452.85
0.1170.1170.206
0.2060.3290.329
0.4680.468
37.133.352.3
45.966.158.6
83.972.1
RK(Mega Flux RK core) and customized designs are also available.
73 ::: Chang Sung Corporation
U CORES
SPECIAL MAGNETIC PO
WD
ER CORES
• Large energy storage capacity
• No magnetic flux leakage
• Good temperature stability
• Low core loss at high frequencies
• High inductance choke coils
• Flyback transformers
• Multiple circuit choke coils
• Output chokes for SMPS
Features
Applications
Product Identification
UK 41 41 C-060
Height of U core
Length : 41mm Available size : 35mm~79mm
Available size : 36mm~ 65mmWidth : 41mm
Mega Flux U core UH : High Flux, US : Sendust
Available perm. 26, 40, 60μPermeability :60μ
UK3536AUK3536BUK4141A
UK4141BUK4141CUK5251A
UK5251BUK6361AUK6361B
UK7965AUK7965B
Part No.
35.035.041.0
41.041.052.0
52.063.063.0
79.079.0
Dimensions(mm) Cross Section
Area(cm2)
AL value (nH/N2) 12%
A B C D E F 026μ 040μ 060μ
36.036.041.0
41.041.051.0
51.060.560.5
64.564.5
20.025.020.0
25.030.025.0
30.030.035.0
30.035.0
25.025.028.0
28.028.035.0
35.041.541.5
42.542.5
13.013.015.0
15.015.020.0
20.025.025.0
35.035.0
11.011.013.0
13.013.016.0
16.019.019.0
22.022.0
2.2002.7502.600
3.2503.9004.000
4.8005.7006.650
6.6007.700
PathLength(cm)
16.9016.9019.30
19.3019.3024.30
24.3029.1029.10
32.6032.60
435344
556654
656475
6677
658268
8510283
9998115
102119
98123102
127152124
149148172
153178
UH(High Flux U Core), US(Sendust U Core) and customized designs are also available.
Magnetic Powder Cores ::: 74
WASHER CORESSPECIAL M
AGNETIC POW
DER CO
RES
• High permeability powder cores• Low core loss at high frequencies • High efficiency washer cores • Minimum magnetic flux leakage• Excellent DC bias characteristics• Good temperature stability• Large energy storage capacity
Features
• Choke coil for mobile phones• Inductor for handheld devices• Power Inductor for PDA, LCD
Applications
Product Identification
DM 3508PDM 3510P
DM 3908PDM 3910PDM 3912P
DM 4610PDM 4612PDM 4614P
DM 6310PDM 6312P
3.56 1.780.81.0
1417
0.8175.66.8
3.3, 4.7, 6.8,10
3.94 2.240.81.01.2
111417
0.9424.45.66.8
3.3, 4.7, 6.8, 10,15, 22
4.65 2.361.01.21.4
162022
1.0606.48
8.8
3.3, 4.7, 6.8, 10,15, 22
6.35 3.791.01.2
1822
1.361 8.84.7, 6.8,10,15, 22, 33, 47, 56
Part No.Core Dimensions(mm)
Before Finish
OD ID HTAL value (nH/N2) 12%
Path Length(cm)
TypicalInductance
L 0A, 20T( H)
RecommendedInductanceL( H) at 0A
Washer Core DM : Washer MPP Core
DM 46 12 P
Parylene - C coated
OD size : 4.6mm Available size : 3.5mm~ 6.3mm
Available HT 0.8mm~ 1.2mmHeight : 1.2mm
75 ::: Changsung Corporation
Product Identification
CS 16 25 026 E
Perm. : 26μ
OD size : 165mm Available size : 101.6mm~ 165.0mm
Available HT 13.6mm~ 40.6mmHeight : 25mm
Sendust Core CM : MPP, CH : High Flux, CK : Mega Flux
E : Epoxy, C : Plastic case, U : uncoated
Available perm. 26, 50, 60,125μ
Epoxy coated
CSC’ big toroidal cores produced by a 3000 ton press are ideal for high current applications, especially in UPS, renewable energy(solar/wind),
high power industrial power systems. The maximum diameter is 165mm(6.5”)OD and the electrical characteristics are the same as small toroidal cores.
CSC cores are the world’s biggest and strongest on the market today.
CS1013CS1016CS1027
CS1033CS1320CS1325
CS1333CS1340CS1625
Part No.Before Finish Dimensions(mm) After Finish Dimensions(mm) Weight
(g)
Path Length(cm)
Cross SectionArea(cm2)
AL value (nH/N2) 8%
OD(mm) Max ID(mm) Min HT(mm) Max OD(mm) Max ID(mm) Max HT(mm) Max 026μ 060μ 125μ
101.6101.6101.6
101.6132.5132.5
132.5132.5165.0
57.257.257.2
57.278.678.6
78.678.688.9
13.616.527.2
33.020.325.4
33.040.625.4
103.1103.1103.1
103.1134.2134.2
134.2134.2167.2
55.755.755.7
55.77777
7777
86.9
14.917.828.5
34.321.726.8
34.442
27.3
548.6665.61097.3
1331.31280.11601.7
2080.92560.22808.0
24.2724.2724.27
24.2732.4232.42
32.4232.4238.65
2.9723.5225.944
7.0445.3476.710
8.71710.6949.460
404780
945468
8810880
92112184
224124156
202248184
192228384
456259325
422518384
CM(MPP core), CH(High Flux core), CK(Mega Flux core) and customer specifications are also available.
BIG TOROIDAL CORES
SPECIAL MAGNETIC PO
WD
ER CORE
• Excellent DC bias characteristics
• Near zero magneto-striction coefficient constant
• Good temperature stability
• Power factor correction(PFC) circuits
• Power inductors for large currents
• AC Reactors for inverters
Features
Applications
Magnetic Powder Cores ::: 76
MAGNETIC POWDER CORES NOTES
77 ::: Chang Sung Corporation
AL Value (nH/N2) The inductance (nanohenries) of a core for 1 turn winding. It is measuredat peak AC flux density of 10 gauss and frequency of 10kHz. 1nH/N2 =1mH/(1000turns)2
Ambient Temperature Temperature surrounding the devices or circuits. The ambient temperatureis measured at 0.5inch(1.27cm) away from the devices or circuits.
AttenuationThe ratio of output parameter (voltage, current, power, etc.) to inputparameter. Unit is [dB]. In the case of power, dB is10log (output power /input power). In the case of current and voltage, dB is 20log (outputcurrent /input current), 20log (output voltage / input voltage)respectively.
Coercive Force (Hc) Refer to Hysteresis Curve.
Common-Mode NoiseElectrical interference that is common to both lines in relation to theground.
Copper Loss [watts] The power loss (I2R) or heat generated by current (I) flowing in a windingwith resistance (R).
Core loss [watts] Core loss is composed of eddy current loss, hysteresis loss and residualloss. Refer to Magnetic Design Formulae.
Cross Sectional Area (A) The effective cross sectional area of a core available for magnetic flux.The cross sectional area listed for toroidal cores is based on bare coredimensions.
Curie Temperature, Tc [ ]The transition temperature above which a core loses its ferromagnetic properties. Usually defined as the temperature at which i
falls to 10% of its room temperature value.
DC Resistance [ ] Resistance of winding when AC current is not applied.
Differential Mode Noise Electrical interference that is not common to both lines but is present between both lines. This is also known as normal mode noise.
DisaccommodationThe proportional change of permeability after a disturbance of amagnetic material. It is measured at a constant temperature over a giventime interval.
Distributed CapacitanceIn an inductor, each winding behaves as a capacitor having thedistributed capacitance. Distributed capacitance is parallel with
inductance in the circuit and causes self-resonance at a certainfrequency. An inductor which has a smaller distributed capacitanceextends a much higher self resonant freguency. So the inductor shouldbe wound to have as small a distributed capacitance as possible.
Eddy CurrentWhen a varying electric or magnetic fieldpasses through the conducting material,current which opposes the change of fieldis induced in it. This current is called eddycurrent. Because a conducting materialhas electric resistance, the eddy currentresults in heat loss. This is referred to asthe eddy current loss.
Effective Permeability (μe) Refer to Permeability.
EMIThe acronym for Electromagnetic Interference is EMI. Generally, EMI refers to unnecessary electrical energies such as noise.
EMC Electromagnetic Compatibility
Hysteresis Curve (B-H Loop)
When the magnetic material is taken through a complete cycle ofmagnetization and demagnetization, the magnetic flux density in thatmaterial behaves irreversibly according to the change of the magnetizingforce.
The results are as shown in Figure 2. As H is increased in the neutralmagnetic material, flux density B increases along the dashed line (initialmagnetization curve) to the saturation point, Bs.
Figure 1. Eddy Current in Powder Cores
Figure 2. B-H Loop
Terminology
Metal Powder
Ceramic Layers
Eddy Current
Magnetic Powder Cores ::: 78
When H is now decreased, the B-H loop transverses a path to Br(remanent flux density), where H is zero and the core is still magnetized.The magnetizing force H is now reversed to give a negative value. Themagnetizing force required to reduce the flux Br to zero is called thecoercive force(Hc). Along the initial magnetization curve, B increasesfrom the origin nonlinearly with H until the material saturates. Inpractice, the magnetization of a core in an excited inductor never followsthis curve because the core is never in a totally demagnetized statewhen the magnetizing force is first applied.
Flux Density, Magnetic Induction, B [Gauss ; Tesla]The corresponding parameter for the induced magnetic field in an areaperpendicular to the flux path. Flux density is determined by the fieldstrength and permeability of the medium in which it is measured.1T=104 Gauss
Incremental Permeability( μ) Refer to Permeability.
InductorA passive device that prevents a variance of the current. Magnetic flux isinduced in the inductor when current flows through the inductor, andthe voltage induced by magnetic flux prevents the change of current.Induced voltage
= L di/dt.
Initial Permeability(μi) Refer to Permeability.
Leakage Flux Leakage flux is the small fraction of the total magnetic flux in atransformer or common mode choke that does not contribute to themagnetic coupling of the windings of the device. The presence ofleakage flux in a transformer or common mode choke is modeled as a small "leakage" inductance in series with each winding. In a multi-winding choke or transformer, leakage inductance is the inductance measured at one winding with all otherwindings short circuited.
Litz WireA wire made by twisting and bundling some insulated wire.It can decrease the copper loss at high frequency by reducing the skin effect.
Magnetic Hysteresis Refer to Hysteresis Loop.
Magnetizing Force, H [Oe ; A/m]The magnetic field strength which produces magnetic flux. The mmf perunit length. H can be considered to be a measure of the strength oreffort that the magnetomotive force applies to magnetic circuit toestablish a magnetic field. H may be expressed as H=NI/ , where isthe mean length of the magnetic circuit in meters. 1 oersted=79.58A/m
Mean Magnetic Path Length( )The effective magnetic path length of a core structure (cm).Refer to Magnetic Design Formulae.
Normal Mode Noise Refer to Differential Mode Noise.
NoiseUnnecessary electrical energy that rises in a circuit.
Operating Temperature Range The temperature at which a device can be operated normally. Above thistemperature, the characteristics of the device can become inferior or thedevice may operate abnormally. In the case of the inductor, thistemperature refers to the temperature rise by the copper loss or coreloss. Refer to temperature rise.
Permeability(μ) In magnetics, permeability isthe ability of a material toconduct flux. The magnitudeof the permeability at a giveninduction is a measure of theease with which a core material can be magnetized tothat induction. It is defined asthe ratio of the flux density Bto the magnetizing force H.
Permeability : μ = B/H [Gauss/Oersted]
The slope of the initial magnetization curve at any given point gives thepermeability at that point. Permeability can be plotted against a typical B-H curve as shown in Figure 3 Permeability is not constant, therefore itsvalue can be stated only at a given value of B or H. There are manydifferent kinds of permeability.
Absolute Permeability(μo) Permeability in a vacuum
Initial Permeability(μi)Slope of the initial magnetization curve at theorigin, that is, the value ofpermeability at a peak AC fluxdensity of 10 gauss (1 millitesla).
μ= B/H (Figure 4)
Incremental Permeability( μ)The slope of the magnetization curve for finite values of peak-to-peakflux density with superimposed DC magnetization(Figure 5). Initialpermeability can be thought of as incremental permeability with 0 DCmagnetization at small inductions. The incremental permeability isexpressed as the slope of the B-H characteristic at around the given operating point.
Figure 3. Variation of along the Magnetization Curve
Figure 4. Initial Permeability
Terminology
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Effective Permeability( )If a magnetic circuit is not homogeneous(i.e. contains an air gap), theeffective permeability is the permeability of a hypotheticalhomogeneous(ungapped) structure of the same shape, dimensions, and reluctance that would give the inductance equivalent to the gapped structure.
Relative Permeability( )Permeability of a material relative to that of free space.
Maximum permeability( )The slope of a straight linedrawn from the origin tangentto the curve at its knee. (Figure 6)
Rated Current Continuous DC current that can flow in the inductor.It is determined by the maximum temperature rise at the maximumstorage temperature range. As rated current is related to power loss ofthe inductor, DC resistance of the inductor should be lowered or theinductor size should be increased in order to increase the ratedcurrent.
Saturation Current The current at which the inductance decreases below a critical percentinductance (10% or 20% of the initial inductance) by applying DCcurrent to an inductor. In general the critical percent inductance is 10%for ferrite cores and 20% for metal powder cores. The decrease ofinductance is caused by the magnetic characteristics of cores.Cores can store a certain amount of flux density, but above that fluxdensity the permeability and inductance of the cores decrease.
Self Resonant Frequency, SRF The frequency at which the resonance appears between distributedcapacitance and inductance of an inductor. At this frequency, inductance and capacitance are canceled out and the inductor isalmost a resistor having high impedance. Distributed capacitance that
arises between wires and between wires and cores is parallel withinductance in circuits. Above the self resonant frequency, the capacitive reactance is dominant and the inductor works like thecapacitor.
Skin Effect As the frequency is higher, the current flow is limited to the surface ofthe wire because the magnetic field in the center of the wire increases.The depth from the wire surface at which the current density at thewire surface decreases by 1/e (37%) is called "skin depth", and this isdetermined by the conductivity of the wire. As the frequency is higher, skin depth decreases, the reactance of wire increases andcurrent flow is interfered. Litz wire may be used in order to decreasethe skin effect.
Storage Temperature Range Temperature range in which the characteristics of a device can bepreserved.
Remanence, Br [Gauss ; Tesla] Refer to Hysteresis Curve.
SaturationThe point at which the flux density B in a magnetic material does notincrease with further applications of greater magnetization force H. Atsaturation, the slope of a material's B-H characteristic curve becomesextremely small, with the instantaneous permeability approaching that of free space. (relative permeability = 1.0)
Saturation Flux Density, Bs [Gauss ; Tesla] The maximum intrinsic induction possible in a material. This is the flux level at which additional H-field produces no additional B-field.
Temperature Rise( T) The increase in surface temperature of a component in free-standing air due to the total power dissipation(both copper and core loss). Approximate temperature rise is as follows ;
Total Power Dissipation(Miliwatts)
Surface Area( )
0.833
=
Total Power Dissipation= Copper Losses + Core Losses
=
Figure 5. Incremental Permeability
Figure 6. Maximum Permeability
Terminology
Innovative TechnologicalAdvancements
Special Shaped Magnetic Powder Cores
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Chang Sung Corporation has become a global leader through its outstanding R&D center, which isconstantly striving to develop new technologies and products. In particular, CSC magnetic powdercores have raised the company’s profile and competitiveness in the world market.
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RESEARCH AND DEVELOPMENT
B-H AnalyserB-H Loop TracerDC Bias TracerPrecision LCR MeterAC Power SupplyElectrical LoadOscilloscopePuncture TesterVibrating Sample Magnetometer (VSM)PFC Test KitImpedance AnalyserScanning Electron Microscope (SEM)Optical MicroscopeLaser Particle Size AnalyserSpecific Surface Area Analyser (BET)Oxygen / Nitrogen AnalyserAtomic Absorption SpectrophotometerHeat Treating FurnacesOptical Emission SpectrometerElectrolysis AnalyserThermal Analysis Equipment (DSC, TG, DTA)Constant Temperature & Humidity ChamberUniversal Testing Machine (UTM)Hardness Testers, etc.
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The CSC product line is constantlyevolving and improving throughour highly advanced R&D centerequipped with the most modernresearch facilities.
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