Sue,
We do Parylene on a number of assemblies. One of our rework methods is to
use media blasting. Take a look at the Swamblaster from Crystal Mark. It
is an ESD safe system. We use wheat starch pellets (a standard media from
Crystal Mark). It is not a particularly fast system, but it does work
well and the softness of the media means that you can remove the Parylene
without damaging the solder mask or part markings. If you go the route of
the slightly harder sodium bicarbonate pellets, it works faster but you
can damage the solder mask real easy if you are not vewy vewy careful.
Doug Pauls
Rockwell Collins
Sue Powers-Hartman <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
12/20/2007 09:48 AM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
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Subject
[TN] Parylene Coating Removal
What is the best way to remove parylene coating? Right now the operators
are scraping the coating off the joint enough to allow access with a
solder
iron. We would like to find a better way.
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