Look at the QPL for MIL-C-46058. This won't give you performance 
     results, but it will tell you which coatings have passed the 
     performance requirements sections of the specification. Part of 46058 
     requires humidity exposure testing per MIL STD 810. I believe this 
     testing is done with the power off.
     
     As far as powered-up, high moisture environmental test results, I 
     suspect that you would need to test your specific design for 
     performance.  
     
     
     Lyn R. Lynch
     Coates ASI
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______________________________ Reply Separator _________________________________
Subject: Unidentified subject!
Author:  [log in to unmask] at internet
Date:    5/9/96 10:11 AM


Are there any resources where I could find data regarding the 
performance of PWBs in humid or tropical environments? Specifically 
are there any industry studies that assess PWB performance in humid 
environments, or are there any guidelines or standards that address 
the PWBs, environment, and the use of Humiseal or conformal coating.
     
Thank You.
     
Joe Pudlo
Charles Industries Ltd.
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