>>>>>>>>>>An interesting question came up about validating printed circuit
board raw material.  In searching for alternate vendors we provide a spec that
V-0 material is required and a UL V-0 stamp be placed on the board.
 
The question is, how do I independently validate the material used, since a
vendor could theoretically choose whatever they want and stamp it as V-0?<<<<<


Are they UL Recognized boards?  If they leave the factory with a UR Mark on
them, the UL inspector will be verifying the flame rating of the base material.

If not, I can't think of any other way other than to ask the supplier to
provide documentation on the make, grade and thickness of the base material
and look it up yourself.


Greg Galluccio
Global Advantage International
www.globaladvantage.ca


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