I have melted SMD pads on prototype designs when powered. This did not 
     necessarily damage the substrate, although I do not trust the part not 
     to fall off the pad at some point.


______________________________ Reply Separator _________________________________
Subject: Max op temp
Author:  [log in to unmask] at internet
Date:    9/4/96 3:50 PM


Questions from a telecomms designer:
     
What is the max continuous operating temperature for a COMPONENT on a vertically
orientated PCB (without  thermal management) without causing "damage" to the 
substrate?
     
Has anyone derived a time/temp situation in reflow that would result in 
significant degregation of the PCB such that personnel might be affected by 
toxic fumes?
     
Thanks,   George Wheadon
     
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