RE: [SI-LIST] : via effect

About this list Date view Thread view Subject view Author view

From: Michael Nudelman (mnudelman@tellium.com)
Date: Fri Jun 01 2001 - 11:15:26 PDT


Can be anything. Depends on your stackup. Matter'o'fact, it may be none, if
capacitance compensates inductance.

Think of an example:

When you run a speed trace, ended by a via, you are worrying about
capacitive responce (capacitance to surrounding planes) of the via.
But when the same via is the one connecting a de-coupling cap to a plane -
you are worrying about the extra inductance between the cap's pads and the
planes.

Gotta see, what your situation is. Via size, planes' clearances, planes'
configuraton (plane layers vs traces' layers)

Mike.

-----Original Message-----
From: v r [mailto:v.r@www.com]
Sent: Friday, June 01, 2001 1:42 PM
To: si-list@silab.eng.sun.com
Subject: [SI-LIST] : via effect

Hi SIgurus,
i have a question .is the presense of a via along a trace inductive or
capacitive?
regards
vr

------------------------------------------------------------
WWW.COM - Where the Web Begins! http://www.www.com

**** To unsubscribe from si-list or si-list-digest: send e-mail to
majordomo@silab.eng.sun.com. In the BODY of message put: UNSUBSCRIBE
si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
****

**** To unsubscribe from si-list or si-list-digest: send e-mail to
majordomo@silab.eng.sun.com. In the BODY of message put: UNSUBSCRIBE
si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
****


About this list Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Thu Jun 21 2001 - 10:12:13 PDT