Hi!
There is a fair possibility that your "requirements" are from the Weapons 
Specification 6536 which contained temp and humidity requirements for assembly. 
I can't find a copy of 6536 but I believe that it bounced the reader to another 
Mil spec (1695??)which contained stuff on temperature, dust, lighting, humidity,
etc. Chase this lead down and see if it is helpful. Good Luck.


Dave Hillman
Rockwell Collins
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______________________________ Reply Separator _________________________________
Subject: Temp. and RH
Author:  [log in to unmask] at ccmgw1
Date:    7/3/96 9:53 AM


Our PWB assembly facility is in a controlled environment kept at 72 
degrees F, and 50% R.H.  The problem is, we don't remember how we 
decided these were the best conditions.  Does anyone know of an IPC 
document or other source stating the best environmental conditions for 
PWB assembly (including SM assembly)?
Any info. is appreciated.  Thank you.
     

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