Paralene and moisture cure silicones will work well for your 
     application, although there may be some CTE problems with silicones.
     
     Try Dow Corning, Grace Specialty Polymers, or Shin-Etsu for silicones 
     or Specialty Coating Systems for Paralene.
     
     Aric Parr
     UT Electronic Controls
     [log in to unmask]


______________________________ Reply Separator _________________________________
Subject: Conformal Coatings
Author:  [log in to unmask] at internet
Date:    8/6/96 6:33 PM


On Conformal Coatings:
     
  I was wondering if anyone can recommend manufacturers of a conformal coating
that will be placed on an PCB with a complex topography.  Some of my require- 
ments are as follows:
    -high dielectric strength
    -good adhesion to flux residues
    -UL and/or Mil-Spec approval
    -able to withstand high temperature applications (~130 C) for extended
     periods
    -fast cure
    -easy to apply
    -easy to rework
    -moisture resistant
    -solvent-free
    -no outgassing
    -volatile organic compound-free (VOC-free)
    -relatively same thermal expansion coefficient as PCB panel
     
Lucy Rojao
[log in to unmask]
phone: (416) 448-5866
fax:   (416) 448-4736
     
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