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December 2005

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From:
"David D. Hillman" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Wed, 7 Dec 2005 15:23:39 -0600
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Hi Vicka! Here are the numbers my references have:

For Acid copper         1.70-1.82 microohm-cm
For Pyrophosphate copper      1.73-1.75 microohm-cm

The specific bath chemistry and additives seem to push the resistivity
values around.

Good Luck.

Dave Hillman
Rockwell Collins
[log in to unmask]




             "White, Vicka
             (AZ75)"
             <vicka.white@HONE                                          To
             YWELL.COM>                [log in to unmask]
             Sent by: TechNet                                           cc
             <[log in to unmask]>
                                                                   Subject
                                       [TN] Resistivity of plated copper
             12/07/2005 02:59
             PM


             Please respond to
              TechNet E-Mail
                   Forum
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             ; Please respond
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               "White, Vicka
                  (AZ75)"
             <vicka.white@HONE
                YWELL.COM>






Does anyone have accurate information of the resistivity of plated
copper as compared to copper foil?
I have done some research and found that there are a lot of conflicting
statements out there. I have seen it published anywhere from plated
copper being 4.8 to 6 uohm cm.



Vicka White
PWB Technology
Honeywell - Phoenix

Email: [log in to unmask]
Phone: 602-436-1467
FAX: 602-436-2252
Pager: 602-238-8274





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