top qfn and bga rework challenges
DESCRIPTION
This presentation covers the top issues dealing with the rework of advanced electronic packages. The material supports QFN rework as well as BGA rework challenges.TRANSCRIPT
6 Top Rework Challenges of BTC and BGA [email protected]
Rework TechniqueIPC 7711 3.11
Rework TechniqueIPC 7711 3.11
Rework TechniqueIPC 7711 3.11
Rework TechniqueIPC 7711 3.11
Step #1
Align and apply stencil to device. Roll solder paste through apertures.
Part Bumping Using a PolyimidePeel-n-Stick Stencil(s)IPC 7711 5.8.1.2.
Step #2
Reflow per solder mfr’s profile recommendations
Part Bumping Using a PolyimidePeel-n-Stick Stencil(s)
Step #3
Remove stencil and clean. Surface now is “bumped”
Part Bumping Using a PolyimidePeel-n-Stick Stencil(s)
Inspection of “bumped” device
Part Bumping Using a PolyimidePeel-n-Stick Stencil(s)
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BGA Rework-Pad Damage #2
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BGA Rework-Pad Damage
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BGA Rework-Pad Repair
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BGA Rework-Mask Damage #3
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BGA Rework-Mask Damage
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BGA Rework-Mask Repair
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BGA Rework-Mask Repair
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BGA Rework-Warped BGA #4
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BGA Rework-Warped BGA
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BGA Rework-Warped PCB
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BGA Rework-How to Mitigate Warpage
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BGA Rework-MSD Handling #5
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BGA Rework-MSD Handling
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BGA Rework-MSD Handling
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BGA Rework-A Primer
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BGA Rework-Shielding #6
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BGA Rework-Shielding
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Cap Discoloration
BEST [email protected]