Paul Truit wrote:
>
> Question:
> I'd also like to know if this has any affect on the calculation of the
> creepage distance between the high voltage (primary) side and the low voltage
> (secondary) side of a UL approved board.  Say we had a 10mm distance between
> primary and secondary, now 3 rows of 1mm dots are spaced evenly between the
> two sections, does this have any impact on the UL specifications on creepage distances?

        Hi Paul -

        Add the thieving copper to your creepage/clearance
        value.  That is to say, if you have 3 thieving dots be-
        tween a primary and secondary points, you'd need 13mm
        total distance.

        Regards,
--

      Jeff Seeger                         Applied CAD Knowledge Inc
      Chief Technical Officer                  Tyngsboro, MA  01879
      jseeger "at" appliedcad "dot" com                978 649 9800

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