If you really need to remove the mold release, the people at Plasma Systems
http://plasmasystems.com

They claim to be able to clean that stuff off.  I was pleased with the
results in cleaning and potting one of our products.




Carl Van Wormer
Cipher Systems
1815 NW 169th Place, Suite 5010
Beaverton, OR  97006
Phone (503)-617-7447    Fax (503)-617-6550



-----Original Message-----
From: d. terstegge [mailto:[log in to unmask]]
Sent: Wednesday, August 14, 2002 7:23 AM
To: [log in to unmask]
Subject: Re: [TN] Conformal coating on top of plastic IC's


Hi Brian,

Thanks for the clarification. The "good reason" for the lack of coating
on some areas of the IC's is that there seems to be a kind of dewetting
from these surfaces. The machine manufacturer's engineer told us that
this is quite normal, and is caused by release agents that are used
during manufacturing of the IC's.
To have nicer results (or have the extra 18 days of damage-prevention)
it seems that manual rework is needed.
B.T.W. it's great to have you back on this forum, it certainly enhances
the technical relevance of many discussions !

Daan Terstegge
Unclassified mail
Personal Website: http://www.smtinfo.net

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