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Subject:
Assy: BGA vs QFP
From:
"Yuen, Mike" <[log in to unmask]>
Date:
Tue, 22 Oct 96 11:29:00 CDT
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Some studies indicated that the fatigue life of BGA is less than QFP.  I 
realized that there are many variables involved in determining long term 
reliability.  Any comments on this subject would be highly appreciated.

The ranking for culmulative joint fails as I know it:
1. 15 mils QFP (longest fatigue life)
2. CCGA
3. CBGA

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