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September 2000

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Subject:
ENIG SMD PWBs Aluminum wire bonding
From:
Dave Gardiner <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 26 Sep 2000 21:47:01 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (23 lines) 
Thanks all for your suggestions on epoxy bleed. Plasma clean and vacuum
bake are being investigated. Has anyone seen any specifications that
cover epoxy bleed or bondability. We have one part number where we have
twice had trouble with no stick to 15 grams pull on the same panels. We
had tests done for surface contamination but there was little difference
in the findings between good and bad boards.

Dave Gardiner

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