If the board is scored and uses SM Capacitors check with your component
vendor. We have had two vendors here in house in the last couple of months
and both say that the recommended spacing is .200 from scored edges and the
same for the area around the tabs on routed boards. Like you I agree that
this is way too much real estate to lose, but this type of component is are
very susceptible to cracking from thermal stress and mechanical stresses
more so than SM Resistors.

Steve Collins
PCB Design Supervisor
Antec Network Technologies
----------
> From: JoAnn Amerson <[log in to unmask]>
> To: [log in to unmask]
> Subject: Re: [TN] Design:Component pad
> Date: Friday, December 19, 1997 3:07 AM
>
> > Could someone be kind enough to tell me
> > what is the minimum distance between the
> > edge of pcb and the end of pad on a
> > panelized board ? IPC -std ?
> >
>
> We do not use IPC standards here but we use .040" from the board edge if
it's
> scored and .020" if it's routed.  I personally feel that's waaaaay too
much
> real estate to throw away but it wasn't my decision.  Anyone care to help
me
> get this changed?  All help is appreciated.
>
> Happy Holidays!  *<():-)>
>
> JoAnn L. Amerson
> Design Librarian
> Red Lion Controls, Inc.
> E-mail: [log in to unmask]
> Voice: (717) 767-6961 ext 6308
>
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