Michael:

I have to agree with Paul, we do that sort of thing here very often and have
never had a problem with it.  I do agree with making the via's a close a
possible and often with not much room we bring the short traces and via's to
the side.

-----Original Message-----
From: Kuczynski, Michael @ SPACENAV
[mailto:[log in to unmask]]
Sent: Friday, December 01, 2000 7:35 AM
To: [log in to unmask]
Subject: [TN] Strange cap Layout


I have an engineer who wants to place 2 vias per side on a 0508 capacitor
for decoupling. (I tried to draw figure below)
He says it will help in filtering and if it isn't done, then don't bother
putting any caps on (idle threat)
The fanout trace is .010 / via is an .013 / SMT pad is .035 x .080 / spacing
between vias is .0625 (center2center)
I think it's horse-hockey and will introdure more inductance, beside taking
up routing channels
I'm looking for any support pro or con on this configuration.

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Michael Kuczynski    Librarian/Sr. Designer
L3 Communications    1-201-393-2122 (Ph)
Space & Navigation   1-201-393-6681 (Fax)
699 Rt. 46 E         Mail Stop PL1/J8
Teterboro,NJ 07680
[log in to unmask]

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