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UltraCap™

Double Layer CapacitorsA New Energy Storage Device for Peak Power Applications

Product Profile 2001

2 EPCOS AG

UltraCaps – electrochemical double layer capaci-

tors from EPCOS – are new energy storage devices

that close the gap between aluminum electro-

lytic capacitors and batteries in terms of power

and energy density. They are capable of several

hundred thousand charge and discharge cycles.

UltraCaps’ dominant design characteristics are high

power delivery and long useful life. Currently

UltraCaps in sizes 5, 10, 100, 120, 600, 1200 and

2700 F are available, which can be combined to

power modules by series or parallel connection.

UltraCaps are typically preferred in industrial

and automotive applications as well as in power

quality or UPS systems.

Contents

Preview 3

UltraCap™ technology 4

Applications and features 7

UltraCap™ cells (data sheets) 8

UltraCap™ modules (data sheets) 15

Cell voltage balancing unit (data sheet) 18

Active /passive balancing circuits 19

Electrical characteristics and measurement methods 20Typical electrical data (curves)

Summary 23

3EPCOS AG

Preview

UltraCap™ – a new energystorage deviceModern peak power electronic appli-cations have an increasing demandfor frequently available, high electriccurrents. In the past, an engineer’stypical choice for peak power perfor-mance devices was aluminum elec-trolytic capacitors, which are usuallyemployed in conventional powerelectronic circuits such as UPS sys-tems, inverters or drives. Thoughaluminum electrolytics are able todeliver extremely high currents, theycan only sustain such currents for afew milliseconds.

Batteries, on the other hand, areable to supply high currents forextended periods of time as long as

their considerable weight and vol-ume does not restrict their utilization.However, batteries are sensitiveagainst abuse such as over-ripples,reverse polarity and deep discharges.The cyclic behavior of batteries ispoor in comparison to capacitors.Batteries can withstand only somehundred up to a few thousandcycles, if kept fully charged and aconditioning discharge followed by an equalization charge is con-ducted periodically.

This means that emerging modernpower electronics applications canneither be served by conventionalcapacitors due to lack of energydensity nor by batteries due to lowpower density and poor cyclingperformance.

The performance gap between alu-minum electrolytic capacitors andrechargeable batteries can now befilled by UltraCaps – electrochemicaldouble layer capacitors from EPCOS.These innovative storage devicespossess extremely high capacitancevalues up to several thousandFarads. So the required energy andpower content provided by Ultra-Caps can be cycled several hundredthousand times.

UltraCaps may not be designated toreplace batteries, but complementthem to overcome some of thedisadvantages in power delivery.Of course, UltraCaps may also beoperated in combination withother energy sources such as drivesystems, solar power, fuel cells, etc.

Properties

Electrical High power density Fast charging with high current Rechargeable with random

currents and charging profiles Very high discharge currents Proof against deep discharge Several hundred thousand cycles Resistant against reverse polarity Ultra-low ESR Longlife time Wide operating temperature

range

Physical Low weight PCB-free Free of heavy metal

(no Cd, Ni, Pb) Environment-friendly Shock- and vibration-proof Safety vent

Applications

Automotive Power quality / UPS Renewables / solar systems Wind power Industrial applications Consumer electronics Telecommunications Traction / subways / streetcars Drive systems Medical equipment Battery backup

These are major fields for peak power applications tailored forUltraCaps.

4 EPCOS AG

UltraCap™ Technology

Double layer technologyBasically UltraCap is an electro-chemical double layer capacitorconsisting of two electrodes, whichare immersed into an electrolyte.When the electrodes are being elec-trically charged, the ions of theelectrolyte move under the influ-ence of the electric field towardsthe electrodes of opposite charge.In the charged state, a fraction ofthe anions and cations are locatedadjacent to the electrode such thatthey balance the excess charge inthe activated carbon. Thus, acrossthe phase boundary between car-bon and electrolyte there are twolayers of excess charge of opposedpolarity. This is called an electro-chemical double layer.

The high energy content of Ultra-Caps in comparison to aluminumelectrolytic capacitors originates inthe activated carbon electrodematerial, which has an extremelyhigh specific surface area of about2000 m2/g and the extremely shortdistance between the oppositecharges of the capacitors which is ofthe order of a couple of nanometers(~10–6 mm). Capacitance of a fewthousand Farads can be realized indevices as small as a soda can.

UltraCaps rely on an electrostaticeffect, purely physical and highlyreversible. Charge and dischargeperforms upon movement of ionswithin the electrolyte. This mode ofenergy storage is in clear contrast toall battery technologies, since theseare based on the formation and dis-

solution of chemical compounds atthe battery electrodes (faradic reac-tions). Consequently, there are somefundamental property differencesbetween UltraCap and battery tech-nologies, which result in long shelflife, extended useful life, high cyclelife and a virtually maintenance-freeproduct.

Power electronic applications requiredevices that can deliver severalhundred amps. UltraCaps – manu-factured in a range of 5, 10, 100,120, 600, 1200 and 2700 F – arespecially designed to meet indus-trial application requirements. Atpresent, the nominal cell voltage is2.3 Vdc. To obtain higher voltages it is possible to connect capacitorsin series with power modules.

Activated carbon electrodes

Negative electrode

Aluminum foil

Separator

Separator

Electrolyte

Positive electrode

Aluminum foil

Fig.1: Electrochemical double layer capacitor

5EPCOS AG

Material selection The best way to realize high capaci-tances is the use of activated carbonas the electrode material (Fig.2).The reasons are high surface area,chemical inertness, electrical con-ductivity and relatively low cost.The possibility of activating carbonmeans that surface areas of about2000 m2/g are obtained. Since thedielectric is extremely thin – it onlyconsists of the phase boundarybetween electrode and electrolyte(2–5 nm) – capacitances of a fewthousand Farad are achieved invery small devices.

To increase the energy and powerof the device, it is desirable to workwith a voltage as high as possible.

The use of an aqueous electrolytelimits the rated voltage to about 1 V. Once this voltage is exceeded,electrolysis of the electrolyte andthus the evolution of gas occurs.Therefore it is common practice touse organic electrolytes, whichallow rated voltages of currentlyaround 2.3 V.

Technology overviewUltraCap technology stresses theadvantages of double layer capaci-tors. Its strong points are highpower and long life, i. e. capaci-tance and – very important forpower applications – ESR stability.

This is achieved by the use of a car-bon cloth, which is infiltrated by aconductive coating that contactsthe current collector. On the liquidside a highly conductive organicelectrolyte is employed.

These components are contained ina metal case that only has a mini-mized area of plastic seals in orderto electrically isolate the terminals.This reduces diffusion of electrolytethrough the seal, which wouldlead to drying of the capacitor andan increase of the ESR value.

Furthermore, UltraCaps utilizestacked electrodes. Using thisapproach it is possible to maximizethe power output and keep energy

Specific power (W/kg)

Spec

ific

ener

gy

(Wh

/kg

)

10 100 1000 10 000

1000

100

10

1

0.1

0.01

100 s

10 s

1 s

0.1 s

10 000 s 1000 s

Li-Ion

Double layer capacitors

UltraCap

Electrolytic capacitors

NiCd

NiMH

Secondary cells Pb1)

losses low. Stacking leads to a pris-matic shape of the cases, which inturn allows dense packing of Ultra-Caps in modules.

Fig.3: Comparison of storage technologies 1) Available in near future

Activatedcarbonelectrodes

Activatedcarbonelectrodes

Separator soaked in electrolyteElectrolyte

Fig.2: Schematic of an electrochemical double layer capacitor (charged condition)

All other materials are chosen suchthat they are compatible with theelectrolyte and electrochemicallyinert at the applied voltages. Alu-minum is a typical choice for cur-rent collector and case material.Separator material may be paper,polymer membranes or glass fibers.

6 EPCOS AG

UltraCap devicesPower electronic applications requiredevices with an output power capa-bility of several hundred amps. The UltraCap line-up was speciallydesigned for this kind of industrialuse. At present the rated cell volt-age is 2.3 Vdc. By connecting theUltraCaps either in series, highervoltages, or in parallel, higher cur-rent capability can be obtained.Such capacitor blocks are calledpower modules.

For limited periods the UltraCapscan be operated at higher voltages,as their expected life depends onoperating conditions such as volt-age and temperature (Fig.4). How-ever under no circumstances shouldthe maximum operating tempera-ture of +65°C and surge voltage of2.7 V be exceeded.

Operating voltage (V)

Year

s

2.2 2.3 2.4 2.5 2.6 2.7

100

10

1

0.1

0.01

15°C

25°C

35°C

45°C

55°C

65°C

Charging technologyUltraCaps are very tolerant regard-ing the method of recharge:All charging methods are allowedas long as the charging voltagedoes not exceed the rated volt-age. Depending on the specificapplication higher voltages maybe tolerable. The easiest methodto charge UltraCaps is to apply aconstant voltage. The maximumcurrent should not exceed thelimit mentioned in the data sheet.In practice charging current islimited by current output of thepower supply (charging source)since UltraCaps posses a very lowinternal resistance. It is not necessary to reach a cer-tain state of charge in order to usethe UltraCap. Charging and dis-charging can be started or inter-rupted at any stage without anydisadvantages. UltraCaps are freeof memory effect passivity and lazy battery effect.

Although an UltraCap possessesthe same cell voltage as lead acidbatteries, it is possible to use thefull voltage range from 0 to 2.3 Vat present. Therefore UltraCaps arecompatible in voltage to all batterysystems simply by connecting afew UltraCaps in series.

UltraCaps are reliable for assumingsudden extensive power require-ments (Fig.5) by supporting (com-pensating) the regular powersource’s capability.

UltraCaps prevent unexpectedshort power interruptions [energydrops] (Fig. 6) by providing therequired energy to the grid toclose sudden power gaps whichthe regular connected powersource could not cover.

Nominalpower

Required UltraCapacitorpower peak power

Nominal UltraCapacitorpower backup power

Requiredpower

Fig.4: Lifetime

Fig.5: Ultracapacitors provide peak power

Fig.6: Ultracapacitors provide backup power

7EPCOS AG

Traction Automotive Diesel-electric bus

Renewable energy Industry Consumer Telecom

Extremely long lifetime …High discharge current …Deep-discharge-proof …Environment-friendly… Ultra-low ESR … Wide temperature range … Heavy-metal-free … Fast recharge capability…

Windmill systems Solar systems Safety lighting

(tower, ground flasher, etc.)

Diesel locomotive starter Subway Streetcar Railway Power quality

Start combustion engine Catalytic preheating Regenerative breaking

Palm/handheld computers Pagers Mobile phones

Wireless remote control unit Wind-up radios Toy applications

UPS system Power tools Induction power transmission Power-line-independent

traffic applications

Applications and Features

Regenerative breaking Reduction of emission

ISG HEV EV FCEV

8 EPCOS AG

UltraCap 5F/2.3 V

Criteria:|∆C| > 20% of initial value orESR > 200% of initial value orILC > specified value

Features

Prismatic cell Solder pin

Type B49100

Ordering code B49100-A1503-Q000

Voltage 2.3 V

Capacitance 5 F

Dimensions (mm) D: 4.75 ± 0.5

W: 22.75 ± 0.5

L: 14.75 ± 1.0

KAL0503-5

+ -

23±0,5

4,75

±0,5

14

,75±

1

3,25±0,5 5,08±0,2

ø0,5±0,05

1,5

max

.

3,25±0,5Fill port

22,75±0,5

8±0,

3

Cells

Preliminary technical data Product

Rated Capacitance (DCC1), 25°C) CR 5 F

Capacitance Tolerance –10…+30 %

Rated Voltage UR 2.3 V

Specific Power (matched load) 1202 W/kg; 3890 W/I

Rated Current (25°C) IC 2 A

Stored Energy (at UR) E 13.2 J

Specific Energy (at UR) 0.7 Wh/kg; 2.2 Wh/l

Surge Voltage US 2.7 V

Max. Leakage Current (72h,25°C) ILC 20 µA

Max. Series Resistance (25°C) ESR 200 mΩMax. Series Resistance (25°C) ESRDC 330 mΩWeight 5.5 g

Volume 0.0017 l

Operating Temperature Top –30…+70 °C

Storage Temperature Tst –40...+70 °C

Lifetime tLD(Co) 90 000 h(25°C, UR)

Lifetime, cycles2) tLD(Cl) 500 000 h(25°C, IC = 0.5 A)

Remarks: 1) DCC: discharging with constant current 2) 1 cycle: charging to UR, 30 s rest, discharging to 0 V, 30 s rest

9EPCOS AG

UltraCap 10F/2.3 V


Features

Prismatic cell Solderable pins

Type B49100


Voltage 2.3 V

Capacitance 10 F


W: 23.5 ± 0.5

L: 29.0 ± 1.0

KAL0504-D

+ -

23,5±0,5

4,7±

0,2

29±1

8±

0,3

3,25±0,5 5,08±0,2

ø0,5±0,05

1,5

max

.

3,25±0,5

4 max.

Fill port







Stored Energy (at UR) E 26.5 J




Max. Series Resistance (25°C) ESR 110 mΩMax. Series Resistance (25°C) ESRDC 180 mΩWeight 6.4 g

Volume 0.0031 l




Lifetime, cycles2) tLD(Cl) 500 000 h(25°C, IC = 1 A)


10 EPCOS AG

UltraCap 100F/2.3 V







Stored Energy (at UR) E 265 J




Max. Series Resistance (25°C) ESR 9 mΩMax. Series Resistance (25°C) ESRDC 13 mΩWeight 37 g

Volume 0.032 l







Features

Prismatic cell Lug terminals

Type B49200

Ordering code B49200-L1105-Q000

Voltage 2.3 V

Capacitance 100 F


W: 34.0 ± 0.3

L: 55.0 – 1.0

KAL0505-L

28±0,5(0,8)

55,5

1_642_

(4,8)

(7)

34±0,3

16,5

±0,3

LabelInsulation

Pressure relief gas pressure 12±3 bar

Tab C4,8-0,8 similarDIN 46342 brass-nickel-plated

Fast-on connector

11EPCOS AG

UltraCap 120F/2.3 V











Max. Series Resistance (25°C) ESR 12 mΩMax. Series Resistance (25°C) ESRDC 20 mΩWeight 37 g

Volume 0.032 l







Features

Prismatic cell Lug terminals

Type B49200

Ordering code B49200-F1125-Q000

Voltage 2.3 V

Capacitance 120 F


W: 34.0 ± 0.3

L: 55.0 – 1.0

KAL0506-U

28±0,5(0,8)

55,5

1_642_

(4,8)

(7)

34±0,3

16,5

±0,3

LabelInsulation

Pressure reliefgas pressure 12±3 bar

Tab C4,8-0,8 similarDIN 46342 brass-nickel-plated

Fast-on connector

12 EPCOS AG

UltraCap 600F/2.3 V








Specific Energy (at UR) 2.2 Wh/kg; 2.41Wh/l


Max. Leakage Current (12h,25°C) ILC 2 mA

Max. Series Resistance (25°C) ESR 2000 µΩMax. Series Resistance (25°C) ESRDC 3400 µΩWeight 290 g

Volume 0.183 l







Features

Screw terminals M6

Type B49300


Voltage 2.3 V

Capacitance 600 F


W: 61.0 ± 0.5

L: 91.0 + 1.0

KAL0507-3

28±0,5

61±0,5

33±0

,591

+1

XView X(pressure relief area)operate pressure 6,5±1 bar

45

0,6

1

Tightening torque: T = 6 NmInsulation

Label 1)

2)

15

2)2)

48 m

ax.

WasherEN ISO 10673

M6 ScrewDIN 6900EN ISO 4017-M6 x16-Z4-1-A2

Spring washerDIN 6905; 5,5

Other fixing elements, ref. p.22

13EPCOS AG

UltraCap 1200F/2.3 V











Max. Series Resistance (25°C) ESR 900 µΩMax. Series Resistance (25°C) ESRDC 1300 µΩWeight 420 g

Volume 0.318 l







Features

Screw terminals M6

Type B49300


Voltage 2.3 V

Capacitance 1200 F


W: 61.0 ± 0.5

L: 158.0 + 1.0

KAL0508-B

28±0,5

61±0,5

33±0

,515

8+1

X

View X(pressure relief area)operate pressure 6,5±1 bar

45

0,6

1

Tightening torque: T = 6 NmInsulation

Label1)

2)

15

2)2)

48 m

ax.

WasherEN ISO 10673




14 EPCOS AG

UltraCap 2700F/2.3 V











Max. Series Resistance (25°C) ESR 600 µΩMax. Series Resistance (25°C) ESRDC 1000 µΩWeight 725 p

Volume 0.60 l







Features

Screw terminals M6

Type B49300

Ordering code B49300-L1276-Q000

Voltage 2.3 V

Capacitance 2700 F


W: 61.0 ± 0.5

L: 156.0 + 1.0

KAL0509-J

28±0,5

61+1

61+1

158+

1

X

View X(pressure relief area)operate pressure 6,5±1 bar

45

0,6

1

Tightening torque: T = 6 NmInsulationLabel

2)

1)

2)

15

2)

WasherEN ISO 10673




15EPCOS AG

UltraCap 450F/14 V

Features

Module Al lug terminals M6

Type B48700


Voltage 13.8 V

Capacitance 450 F

Dimensions (mm) 123 x184 x173

Preliminary technical data










Max. Series Resistance (DDC, 25°C) ESRDC 4.1 mΩMax. Series Resistance (100 Hz, 25°C) ESRHF 6.5 mΩWeight 4.5 kg

Volume 3.9 l



Lifetime tLD(Co) 90000 h(25°C, UR)

Lifetime, cycles2) tLD(Cl) 500000 h(25°C, IC =100 A)



Modules

16 EPCOS AG

UltraCap 67F/42 V

Features

Module Lug terminals M6 Active cell balancing

Type B48720

Ordering code B48720-B7674-Q018

Voltage 42 V

Capacitance 67 F

Dimensions (mm) 213 x196 x192




Rated Voltage UR 42 V





Surge Voltage US 48 V


Max. Series Resistance (25°C) ESR 16 mΩMax. Series Resistance (25°C) ESRDC 23 mΩWeight 10.0 kg

Volume 8.0 l







17EPCOS AG

UltraCap 100F/56 V

Features

Module 19’’/5U-rack Incl. cell balancing by resistors

Type B48710


Voltage 56V

Capacitance 100F

Dimensions (mm) 360 x 440 x 220




Rated Voltage UR 56 V





Surge Voltage US 65 V

Bias Current (12 h, 25°C, Rsym/cell = 56 Ω) ILC 40 mA

Max. Series Resistance (25°C) ESR 18 mΩMax. Series Resistance (25°C) ESRDC 27 mΩWeight 28 kg

Volume 35 l







18 EPCOS AG

UltraCap Cell Voltage Balancing Unit

Features

Accessories Active cell voltage balancing

Type B44069

Ordering code B44069-A1235-G001

Voltage 2.35 V

Dimensions (mm) 43 x 28 x4


Threshold Voltage Uth 2.35 V

Tolerance –2…+2 %

Hysteresis Uhyst ±10 mV

Operating Voltage Uop –0.2…+3.5 V

Surge Voltage Us 5.5 V

Equivalent Internal Resistance Ri on 3 Ω (Uop > UTh)

Equivalent Internal Resistance Ri off 15 kΩ (Uop < UTh)

Weight (total) 3 g



Remarks: 1) No additional power supply is required

2) Assembly together with the busbars

3) Wrong polarity may damage the integrated circuits

19EPCOS AG

UltraCap Cell Voltage Balancing

If UltraCaps are connected in seriesto gain higher rated voltage, uni-form voltage distribution becomescritical. Depending on the appli-cation, voltage balancing can beachieved by active or passive bal-ancing or a combination of both.

Passive balancingThe selection of passive voltagebalancing is recommended if the closed-circuit current is of

minor relevance, the voltage compensation can be

extended to several hours,e.g. uninterruptible powersupply.

Function Cell voltage balancing carried out

via an ohmic resistor connectedin parallel to the UltraCap cellterminals.

the integrated bypass resistor Rbyp as long as the cell voltagelevel becomes the average leveland the switch S opens again –balanced UltraCaps.

In a nutshell, overvoltage will beprevented by forced high self-discharge rates.

Combination of passive andactive balancingDepending on the application thecombination of both, passive andactive balancing, can be opportune.Even the cycle voltage is lower thanthe rated voltage,e.g. rated voltage is 2.5 Vdc andoperating voltage is 1.7 Vdc(Fig.9 and Fig.10).

Function Passive balancing used as voltage

sharing at 1.7 Vdc (due to fastand/or high current discharge).

Active balancing used as surgeprotection at >2.5 Vdc.

uc R1

R2

Uref

Rbyp

S

=

UC = Uref * R1

(R1+ R2)

Balanced

Fig.7: Schematic of active cell voltagebalancing

U c (V

)

Activebalancing

3

2,5

2

Time (min)0 4 8 12 16 20

S offS on100Rbalancing

Fig.8: Diagram of balancing 1200 F at 3 V

Fig.9: Cell voltage balancing, UltraCaps in series connection

Fig.10: UltraCaps in parallel connection, active and passive cell voltage balancing

Active balancingThe selection of active balancing isrecommended if the closed-circuit current should

be kept low, cyclic applications are concerned,

e.g. electrical system appli-cations of vehicles.

Function In case of UltraCaps in series

connection, a cell voltage balan-cing unit to connect in parallel to each cell is recommended.

Core of the unit is a comparatorwith a precise internal voltagereference and an ultra-low single-supply operating voltage range.

If the cell voltage Uc (calculatedby the formula below) is higherthan the average voltage level ofthe connected UltraCaps, the cellvoltage balancing unit closes theswitch S (Fig.7). Cell dischargingoccurs with approx. 800 mA via

Cell voltagebalancingcomparator

Cell-rowbalancing

Single cellbalancing

KAL0515-TRow balancing requires adapted cell voltage balancing unit & resistor

p-p´ connected

both (a-a´ & p-p´) connectedcombination voltage balancing(active & passive)

passiveactive

KAL0520-U

a-a´ connected

UC2

UC1

UCW RW

R2

R1p-p´

a-a´

Cell voltagebalancing"active"comparator

Cell voltagebalancing"passive"

20 EPCOS AG

Electrical Characteristics and Measurement Methods

Fig.13: Typical characteristic of ESR = f (temperature) for 1200F/2.3V UltraCap

ESRTemperature (°C)

ESR

/ESR

_25

°C

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80

1,6

1,4

1,2

1,0

0,8

ESR = f (Temperature)

Vup

VR1

2.3 V

0

0

5s

Iw

10s

Vd

VR2

tup 15s5s

td

-Iw

10s

C =Vd

Iw*tdESRDC=

Iw

VR2

Fig.11: Measurement cycle for DC ESR/Cap

f :1kHz

ESRmΩ=0.01

VC[mV]

10mA

C Vc

A

Fig.12: Measurement circuit for RF/ESR measurement

Typical Data

Fig.14: Impedance, ESR vs. frequency (1200 F cell / 2.3 V)Remark: These curves (L/f) of the 1200 F/2.3 V UltraCap are shown as an example for the UltraCap line-up of EPCOS

Z/f

Impe

danc

e, E

SR

f

KAL0519-R

10-5 -410 -310 -210 -110 010 110 210Hz10

10

10-1

Ω

-3

-4

10-2

Impedance (z)ESR r(z)

21EPCOS AG

Self-discharge Characteristics

10FDischarge time (h)

Cel

l vo

ltag

e (V

)

0 1 2 3 4

2,3

2,2

2,1

2,0

min.max.

Discharge time (h)

Cel

l vo

ltag

e (V

)

0 4 8 12 16

2,3

2,2

2,1

2,0

120Fmin.

max.

Discharge time (h)

Cel

l vo

ltag

e (V

)

0 4 8 12 16

2,3

2,2

2,1

2,0

2700F min.

max.

Discharge time (h)

Cel

l vo

ltag

e (V

)

0 4 8 12 16

2,3

2,2

2,1

2,0

1200Fmin.

max.

Fig.15: Self-discharge B49100-A1104-Q; 20h float time

Fig.16: Self-discharge B49200-F1125-Q; 6h float time

Fig.18: Self-discharge B49300-L1276-Q; 6h float time

Fig.17: Self-discharge B49300-F1126-Q; 6h float time

22 EPCOS AG

Discharge Characteristics

5FDischarge time (s)

Cel

l vo

ltag

e (V

)

0 10 20 30 40 50 60

3

2

1

02A 500mA 200mA


Cel

l vo

ltag

e (V

)

0 10 20 30 40 50 60

3

2

1

03A 1A 500mA


Cel

l vo

ltag

e (V

)

0 10 20 30 40 50 60

3

2

1

030A 10A 5A


Cel

l vo

ltag

e (V

)

0 10 20 30 40 50 60

3

2

1

020A 10A 5A

Fig.19: 5F /discharge from 2.5 V with constant current

Fig.20: 10F/discharge from 2.5 V with constant current



Screw EN ISO 4017-M6 x16-Z4-1-A2 EN ISO 4017-M6 x16-A2 EN ISO 4017-M6 x 16-8.8*

Washer EN ISO 10673 (or DIN 6902) DIN 137-B6-FSt* DIN 137-B6-FSt*

Spring washer DIN 6904; 5.4 DIN 128-A6-FSt* DIN 6904; 5.4**yellow / blue

surface treated

Note:

23EPCOS AG


Cel

l vo

ltag

e (V

)

0 10 20 30 40 50 60

3

2

1

0300A 100A 30A


Cel

l vo

ltag

e (V

)

0 10 20 30 40 50 60

3

2

1

0300A 100A 50A


Cel

l vo

ltag

e (V

)

0 10 20 30 40 50 60

3

2

1

0400A 200A 100A




SummaryDistinguishing features of UltraCaps from EPCOS are high power density, long

cycle life and consequently virtually maintenance-free products. This makes them

ideal for all applications requiring high peak-power discharge for a few milli-

seconds up to several minutes, in various kinds of application. EPCOS offers not

only the innovative components (cells and modules) but also all the required

support that customers need to develop new products and applications.

)4'37 %+

Herausgegeben von EPCOS AG, Marketing KommunikationPostfach 801709, 81617 München, DEUTSCHLAND (089) 636-09, FAX (089) 636-2 2689 EPCOS AG 2000. Alle Rechte vorbehalten. Vervielfältigung, Veröffentlichung, Verbreitung und Verwertung dieserBroschüre und ihres Inhalts ohne ausdrückliche Genehmigung der EPCOS AG nicht gestattet.Mit den Angaben in dieser Broschüre werden die Bauelemente spezifiziert, keine Eigenschaften zugesichert. Bestellungenunterliegen den vom ZVEI empfohlenen Allgemeinen Lieferbedingungen für Erzeugnisse und Leistungen derElektroindustrie, soweit nichts anderes vereinbart wird. Diese Broschüre ersetzt die vorige Ausgabe. Fragen über Technik,Preise und Liefermöglichkeiten richten Sie bitte an den Ihnen nächstgelegenen Vertrieb der EPCOS AG oder an unsereVertriebsgesellschaften im Ausland. Bauelemente können aufgrund technischer Erfordernisse Gefahrstoffe enthalten.Auskünfte darüber bitten wir unter Angabe des betreffenden Typs ebenfalls über die zuständige Vertriebsgesellschafteinzuholen.

Published by EPCOS AG, Marketing CommunicationsP.O.B. 801709, 81617 Munich, GERMANY ++49 89 636-09, FAX (089) 636-2 2689 EPCOS AG 2000. All Rights Reserved. Reproduction, publication and dissemination of this brochure and the informationcontained therein without EPCOS’ prior express consent is prohibited.The information contained in this brochure describes the type of component and shall not be considered as guaranteedcharacteristics. Purchase orders are subject to the General Conditions for the Supply of Products and Services of theElectrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers’Association), unless otherwise agreed. This brochure replaces the previous edition. For questions on technology, prices anddelivery please contact the Sales Offices of EPCOS AG or the international Representatives. Due to technical requirementscomponents may contain dangerous substances. For information on the type in question please also contact one of ourSales Offices.

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