[SI-LIST] Re: PCB signal speed over temperature

  • From: "Song, Wil Choon" <wil.choon.song@xxxxxxxxx>
  • To: <si-list@xxxxxxxxxxxxx>
  • Date: Tue, 22 Jul 2003 10:40:49 +0800

Hi,

Referring to Hermann question, can anyone help us with the temperature
vs SI concerns? Hope there could be some discussions on this topic :)

Thanks a lot,
Wil Choon

-----Original Message-----
From: hermann.ruckerbauer@xxxxxxxxxxxx
[mailto:hermann.ruckerbauer@xxxxxxxxxxxx]=20
Sent: Wednesday, June 18, 2003 7:18 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] PCB signal speed over temperature

Hello all,

Maybe somebody can give me a hint or direct me to any ressources about
this
topic.

On a PCB there are a lot of mechanical and electrical parameters more or
less dependent on temperature.=20
I found a lot of ressouces discussing dependencies of material
properties.
What I would be interested in is
the overall dependency of the signal flight time on temperature. The
different temp dependencies might have
different effects on flight time, and might compensate or worsen each
other.


- Does anybody know how much effect a temp change for e. g. 0C to 100C I
would have to consider for signal flight
time ?
- What would be the main contributor to this change ?
- Or is the effect not even measerable at all ?

Thanks a lot

Hermann



Infineon Technologies
Hermann Ruckerbauer
MP PDT PD DES 5 / MchB / Room 3448
Balanstrasse 73
D-81541 Munich
Germany
Phone:          +49 (89) 234 25041
Fax.:           +49 (89) 234 9555437
e-mail:         Hermann.Ruckerbauer@xxxxxxxxxxxx
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