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August 2004

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Subject:
From:
"David D. Hillman" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Wed, 11 Aug 2004 15:01:04 -0500
Content-Type:
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Hi TechNet! Hey, looking for some help (Rudy, Frank, Gerard, plating
folks). Background:  I have a test board which with approximately 80
uinches of wirebondable hard gold plating that is having gold wirebond
process problems. An XPS (xray photoelectron spectroscopy) analysis of a
"good" versus "bad" test board revealed that the "bad" has significant
organic surface contamination for carbon and oxygen in the form of a
hydrocarbon (lots of C-C and C-H bonds). Now the question: can/will a
hydrocarbon species be codeposited into the gold plating thickness? I
understand the surface process/issues but the codeposit question came up.

Dave Hillman
Rockwell Collins
[log in to unmask]

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