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William Sommerwerck William Sommerwerck is offline
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Default Cleaning Plated Electrical Contacts?

First of all, connectors have a very finite numbers of mate-unmate
cycles in their original design and once they reach that number
[either half] they are basically scrap. Further, if you mate a worn
out connector with a good one, you may contaminate the surface
of the 'good' half and compromise its future performance.
Except for connectors especially designed for large numbers of mating,
most commercial connectors are good for 50 to 200 cycles, and that is
highly dependent on the environmental conditions [dust and grit are a
quick death].


That's an awfully small number. A properly manufactured gold-plated
connector should be good for at least 10 times that, shouldn't it?

I'm pretty certain the sorts of connectors used on (say) flash RAM are good
for a couple thousand cycles. They'd have to be (???), as it's assumed the
card will be repeatedly inserted and removed.