Doug,
One of our PCB suppliers gave us its copper foil resistivity, which is higher
than the published bulk copper resistivity.
Regards,
George
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Doug Brooks
Sent: Thursday, October 22, 2015 8:00 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Thermal measurements on a test board
I am looking for some thoughts on some measurements I have just taken
I have a new test board I have done some preliminary measurements on, and have
come up with the following measurements:
Resistivity 0.8666 micro-ohm in (expected 0.67)
Thermal coefficient of resistivity (alpha) .0048 (expected .0038)
The "expected" values are the published values for "copper", not processed
copper on a PCB. Have any of you done similar measurements and come up with
similar values?
Doug
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