Thanks! I'll take it.
Bev
-----Original Message-----
From: Hans Shin [mailto:[log in to unmask]]
Sent: April 27, 2001 11:31 AM
To: [log in to unmask]
Subject: Re: [TN] SIR Definition
IPC-T-50 has a shorter one...
"The electrical resistance of an insulating material between a pair of
contacts, conductors or grounding devices in various combinations, that is
determined under specified environmental and electrical conditions."
Regrards,
Hans Shin
Pacific Testing Laboratories, Inc.
http://www.pacifictesting.com/
-----Original Message-----
From: Bev Christian [SMTP:[log in to unmask]]
Sent: Friday, April 27, 2001 8:17 AM
To: [log in to unmask]
Subject: [TN] SIR Definition
OK, let's see what I can stir up today. :)
I am looking for a clear, succinct definition of surface insulation
resistance. If I look in IPC-9201 "Surface Insulation Resistance Handbook",
I don't find what I am looking for. (Sorry, Joe, Doug et al). What I find
on page 2, section 2.1, Definitions is the following: "It represents the
electrical resistance between two electrical conductors separated by some
dielectric material(s). This property is loosely based on the concept of
sheet resistance, (see ASTM-D-263), but also contains elements of bulk
conductivity, leakage through electrolytic contaminants, multiple dielectric
and metallization materials and air." Whew!
Any takers? Hmmm?
regards,
Bev Christian
Research in Motion
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