Lucy,
          
          Try Enthone (203-934-8611) or Humi-Seal. Enthone frequently advertises 
          their VOC-free conformal coatings in publications such as Surface 
          Mount Technology and Circuits Assembly. Humi-Seal is the "Grandfather" 
          of conformal coatings.
          
          Greg Kilinski
          Acuson Corp.
          [log in to unmask]


______________________________ Reply Separator _________________________________
Subject: Re: Conformal Coatings
Author:  [log in to unmask] at ccUnix
Date:    8/7/96 10:44 AM


          
     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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