UL796 is the fabrication specification.  IMO there is no reason to specify a UL compliant board unless it will be used in a UL listed or UL recognized product.  

UL is a not for profit company started by insurance companies to help reduce their risk.  IMO unless a end product and the board is designed to a UL product spec, a 796 rating doesn't achieve much.

Don Vischulis

Sent from my iPod

On Mar 24, 2011, at 10:52 AM, Jack Olson <[log in to unmask]> wrote:

> Greetings,
> 
> We are reviewing our bare board procurement document and Fab Notes, and I'm
> stuck on the part about UL. Reviewing notes from other sources I don't see
> any mention of UL, but I know fabricators have some kind of UL approval
> process (and the 94-Vx rating) and a UL registered logo? (I don't know).
> 
> My question is, is the UL involvement primarily for the flammability of the
> MATERIALS they use, or is there more to the story?
> 
> More to the point, Is there any reason to specify UL on a fabrication
> drawing (or in a general requirement?)
> 
> thanks,
> Jack
> 
> 
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