Consumer Solutions & Support |
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US Competency Center |
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600 North US Highway 45 |
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Libertyville, Illinois |
60048 |
Website: gs.mot.com |
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FIELD SERVICE BULLETIN |
FSB Number: |
LVCCFSB2005-139 |
Author: |
Tony Bryan |
Date: |
May 12, 2005 |
Total No. of Pages: 3 |
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Subject: |
Skyworks Eagle IC – High Current Failure |
Model Affected: |
GSM V300, V303, V400, V400p, V600, V220, E398, C650, |
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C550, V180, C380, E550/V535, V620/V600i, V3 |
Level of Repair: |
3 |
Service is aware of an issue identified during the 1st 200 NPI analysis on several GSM products that use the Skyworks PA P/N 5189818N01. Some units, returned with customer complaints of “Can’t Power on” or “Battery short life”, were found to have a higher than normal current draw. This issue is caused by abnormal high current consumption of Skyworks PA P/N 5189818N01 due to a mechanical scratch across the die surface. Such damage would lead to a short to ground on the die surface after phone assembly and field operation.
Skyworks has instituted several corrective actions to reduce the occurrence of mechanical damage failure mode. The actions include:
1)Added Cleaning After GaAs Die Scribe and Break Process
2)More Frequent Cleaning of the Pick up Tip (After Every Lot), Replacement of
Pick up Tip (After Every 17,000 Placements).
3)Heightened Wafer Inspection (100X Microscopic Inspection of Panels After Die Attach – for Lot Set-up) Added to Improve Overall Product Quality at all
Assembly Sites. – WW52 ‘04
MOTOROLA INTERNAL USE ONLY |
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