We only remove small areas for individual component rework and then simply
burn through the material with a soldering iron as part of the unsoldering
step.  We have never had the need to remove this type coating from an entire
board...that would essentially be destructive. We have removed all acrylic
coating though because it dissolves in IPA and also Acetone.

> Rainer G. Blomberg
> Honeywell -Space Systems Clearwater
> Staff Production Engineer
(727) 539-5534


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Joseph H. Smith
Sent: Tuesday, December 13, 2005 9:48 AM
To: [log in to unmask]
Subject: [TN] Help with removing UR Conformal Coating

Has anyone had experience or success with removing conformal coating for PWA
that has been coated with UR coating especially using a chemical means.  I
am particularly interested with how you handled coating around or under
BGA's.

Any help would be grateful.


Thanks.

Andrew Kettlewell
Process Engineer
Sypris Electronics
Tampa, FL
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