RE: [SI-LIST] : Contact resistance?

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From: John Spohnheimer ([email protected])
Date: Thu Apr 27 2000 - 10:18:35 PDT

Talk to The J. M. Ney Company, <>

They publish a great text - "Ney Contact Manual", that may give you some insight into the problem.
Last time I checked (2-3yrs ago), they would mail you a copy of the manual if you gave them a call.

The material is a bit dated (1973 copyright), but the basic physics doesn't change.

Looking at Section 1.8 Constriction Thermal Effects, they have a ~4 page summary of how
the constriction resistance (basically the contact resistance) varies with applied voltage.

If you send me your fax # off-list, I'll send you the pertinent section.


-----Original Message-----
From: bgrossma [mailto:[email protected]]
Sent: Thursday, April 27, 2000 11:16 AM
To: [email protected]
Subject: [SI-LIST] : Contact resistance?

 << File: Card for Brett Grossman >> Hi,

Can anyone direct me to a decent reference on contact theory?

Specifically, I am trying to get an analytical expression (or an
intuitive understanding at least) for how contact resistance between to
differing metals can vary as a function of power dissipated in the
junction, and why. Kind of a funky thermal/materials problem, but I only
want to get a ballpark estimate to see if an idea would be worth
pursuing further.

Thanks for your help,


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