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43:46 1996
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Keep the conformal coating -- with those temperature variances, you could have 
big trouble with an uncoated board. That is unless you have a hermetically 
sealed unit. What are you masking, mating connectors/board guides/adjustment 
screws?

______________________________ Reply Separator _________________________________
Subject: Fwd: conformal coating
Author:  [log in to unmask] at SMTPpost1
Date:    9/19/96 2:57 PM


     
---------------------
Forwarded message:
From: [log in to unmask] (Mark Sattel) 
Resent-from: [log in to unmask]
To: [log in to unmask]
Date: 96-09-19 12:40:03 EDT
     
Sirs:
     
I am presently investigating the need for conformal coatings on our 
printed circuit assemblies.  Do you have any literature that discusses 
the relative merits and disadvantages?  To date, our company has 
conformal coated 100% of our PCAs.  But the cost of masking, spraying, 
and unmasking are staggering.  My first instinct was to eliminate the 
coating except in high heat, high humidity environments.  Our operating 
environments vary from freezing cold to hot and humid.  Any information 
that you can supply will be greatly appreciated.
     
Sincerely,
     
Mark Sattel
Datron World Communications, Inc
304 Enterprise St.
Escondido, CA 92029
(619)747-1079 ext 208
FAX (619)747-2625
E-mail [log in to unmask]
     
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