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February 2000

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Subject:
PLASTIC MICRO-BGA
From:
Brunker Ed <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 21 Feb 2000 17:23:28 -0000
Content-Type:
text/plain
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text/plain (20 lines) 
Micro BGA underfill. Some people underfill plastic micro BGAs. The logic
says that plastic components reflect the CTE of FR4 substrates and thus you
would not underfill. Yet serious companies do underfill. Why???
Regards
Edward Brunker

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