Mitchell, James wrote:
>
> Hello!
>
> I am looking for guidance on choosing gold plating thicknesses and
> plating processes for circuit board edge fingers.  For example: What are
> the recommendations for circuit board edge fingers that will be inserted
> into a connector and removed 10 times verses a installation/removal
> cycle of 50 times?
>
> Are there any references on the subject?  Any help will be greatly
> appreciated!
>
        No help from me, just more questions!

        I recall from the 70's that there was once an alternate
        underplate for longer life in the like of extender boards
        or diagnostic plug-ins.  I seem to recall specifying gold
        over rhodium for lives of 100s of insertions.

        Is this still done?
--

      Jeff Seeger                             Applied CAD Knowledge Inc
      Chief Technical Officer                      Tyngsboro, MA  01879
      jseeger "at" appliedcad "dot" com                    978 649 9800

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