I don't have the 1993 edition of UL796, but the previous edition reads "Each
printed wiring board shall be plainly and permanently marked, such as by
etching or printing..."  I've seen them get really small from some UL
approved fab houses.
John Thorup

> -----Original Message-----
> From: Jack Olson [SMTP:[log in to unmask]]
> Sent: Monday, November 29, 1999 1:22 PM
> To:   [log in to unmask]
> Subject:      [TN] FAB: UL and/or Vendor Logos
>
> Can anyone with fab CAM expertise tell me if there is a typical SIZE for
> the
> vendor logo?
> Is there a maximum size?
>
> We prefer them in copper on the back of the board, but sometimes we need
> to
> make a little relief in a plane (cut out a rectangle) for the logo.
>
> The question is: How big should the relief or rectangle be?
>
> Thanks in advance,
> Jack
>
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