I agree with Jeffrey. At most of the companies I have worked for, the
numbers he gives are the standard. One company insisted on 0.200", but
they were archaic in almost every other aspect of board design as well.

Jay DeKing
Designer-at-large
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--------- Forwarded message ----------
From: "McGlaughlin, Jeffrey A" <[log in to unmask]>
Our standard edge spacing is 0.025"[0.64mm] for copper features and
0.050"
[1.27mm] for component bodies. We often drop down to the 0.025"[0.64mm]
for
both for dense small boards. Our standard was suggested by our fabricator
for best yield of routed boards.

Jeffrey A. McGlaughlin
PCB Designer
Battelle Memorial Institute
Columbus Ohio
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        -----Original Message-----
        From:   Hawes, Adam [SMTP:[log in to unmask]]

        What do you guys use as a std,rule of thumb package keepin from
the
edge of
        a PCB. We are using 1.5mm as standard but I have (the usual
story) a
small
        PCB with alot of components to get on! Any feedback from other
designers and
        fabricators would be greatly appreciated.

        Regards,



        Adam Hawes                                           GenRad Ltd.
        PCB Design Engineer


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