Hello All,

I am working with a customer to determine the optimal finished hole diameter
for press-fit connectors in a Gold finish PCB. The supplier's data sheet for
the connector specifies .024"+/-.002" HASL plated holes. We have learned
from experience that the connector insertion success rate is greatly
improved when using a slightly larger hole on a gold finish PCB since it is
less compliant with the connector pins then the soft HASL.

So far, the supplier has not given a recommendation on the diameter for
gold, so I am looking for other industry standards to validate our findings.

Any help would be greatly appreciated.

Dave Pahlas
Mfg Engineer
(208) 898-1072

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