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