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Subject:	copper pour stand-off
From:	Ray Dwyer <[log in to unmask]>
Reply To:	(Designers Council Forum)
Date:	Thu, 5 Feb 2004 11:57:41 -0600
Content-Type:	text/plain
Parts/Attachments:	text/plain (23 lines)

Greetings,
I am concerned about rules for stand-off distance for copper pour on an
outer layer to provide added isolation to a pair of sensitive low current
traces.  There are other traces on the top layer as well.  The basic info is
50 ohm impedance, 10 mil wide microstrip, digital TTL signal current as low
as in 10s of mili-amps, FR-4 material, 1 oz copper.
Ray Dwyer
972-371-4046
Maxim
4401 Beltwood Parkway
Dallas, Tx. 75244



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