[SI-LIST] : adjacent planes.....sort of

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From: Peterson, James F (FL51) (james.f.peterson@honeywell.com)
Date: Thu Mar 29 2001 - 06:10:02 PST


hello,

We have a stackup that really can't afford an adjacent power/ground
configuration, but we have a pwr-sig-gnd that only separates the pwr and gnd
by 10mils.

My question is, do we still reap the benefits of the adjacent plane when we
have a signal layer in between them?

(before answering with a quick no, keep in mind that a classic adjacent
pwr/gnd plane has 100's of metal canisters, also called vias, going through
these 2 planes.)

thanks and regards,
Jim

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