FreeLists / si-list / [SI-LIST] Board via characteristics (fwd)

[David Hoover <dhoovy@xxxxxxxxxxxxx>]

Gang,

I was asked if I could forward this 
question to the list for input. I'm a
fabricator that builds high speed PCBs
out of many different composites. I'm
also very curious about modeling vias
because I co-chair the IPC committee
on Controlled Impedance Circuit Boards and
High Speed Logic Design and during the last couple of Conference Meetings this 
topic has
came up. I run a 2D Field Solver which I
believe can model for vias. Just never have
done it.

Any and all response would be greatly 
appreciated.

David Hoover
Field Application Engineer
Data Circuit Systems, Inc.
(408) 280-0422 X233
http://www.datacircuits.com     



-------- Forwarded message --------
Date: Thu, 9 May 2002 15:14:30 -0400
From: dhoovy@xxxxxxxxxxxxx
Subject: Board via characteristics
 
Dave:

For Spice modeling purposes, we need the equivalent inductance and AC
resistance ( at 0.5 Ghz - 1.0 Ghz ) of a board via,

length = 0.062 inches and diameter = 0.006 inches, no other parasitic
effects needed at this time.

                                                                   Regards,

                                                                   Bob

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