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December 1999

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Subject:
From:
Jean-Francois Bissonnette <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 3 Dec 1999 10:26:31 -0500
Content-Type:
text/plain
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Hi!

We use silicon conformal coating on some boards and some of these
show a lack of adhesion of the coating.  It peels off very easily
with gently scratched.  I also heard of some peeling test that could
be done, can it be done with any kink of tape?  The same coating on
the other boards wont peel if I try to scratch it off.

Can anyone shed some light on this?  I tought that it would be a
cleaning problem but the supplier says that they do clean it.  Can
the board material be the source of that problem?

Thank You!

JF

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