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December 1998

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Subject:
From:
"Vaughan, Ralph H" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 16 Dec 1998 11:35:14 -0800
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Season's Greets,

A query (actually re-query) to those in the know on the usage of plastic
microcircuits instead of ceramics.

I have some component guys who have ruled that plastic parts can only be
assembled on a no-clean flux line.  Anyone using a rosin (RMA) flux is
dis-qualified from assembling for us.  I know the theory is that the
microcracks formed at reflow temperatures will entrap corrosive residues,
but I have trouble buying the NO-CLEAN GOOD, ROSIN-BAD generalization.

Opinions?

Ralph Vaughan
Boeing-Atlanta

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