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1996

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Subject:
Re: Black oxide on outer layers
From:
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Date:
Wed, 25 Sep 1996 19:41:21 -0400
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Lou,

I can only think of problems associated with a black oxide coating on outer
layers of a PWB.  I have heard of a bronze oxide outer layer coating which
would be a very thin oxide coating & there are major process control issues
with this coating.  It is obvious to me that your supplyer has adhesion
problems with their soldermask and are looking at an A#1 kludge fix for this
problem.  I would say NO!.

Dave Sullivan

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