To: AAA �C Engineer, Broadcom |
From: BBB - IDAX Microelectronics |
Report Date: |
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Subject: Assembly Report �C Microwave Device |
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Job Scope |
Chip-On-Board Packaging, 5 Boards |
62 wires/board x 5 boards |
Wedge bond, Alum 0.7 mil |
2 Critical Wires of equal length |
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Incoming Board surface |
Observation: Many short fibers around SMDs corners |
Reason:
Probably caused by the soldering operator using paper to wipe off the residual of solder flux |
Risk: Electric short |
IDAX Action: Use tape adhesive to Get those fibers off the board |
Suggestion: Remove fibers after wiping the flux Thoroughly with tape adhesive |
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Bonding Diagram |
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2. First Unit: Not Encapsulated Yet |
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Preparation |
Tagged each board with a number from #1~#5 |
Attach die while constrain epoxy within the die size |
Setup on W/B work-stage |
Ground during Wire-Bond Operation |
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