Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Nickle plating for SS Metal switch...

Tom Volker

#16995

Nickle plating for SS Metal switch... | 18 December, 1997

I am designing an SMT pad for a ss metal switch. Finished copper thickness is .0014 and nickle-plating originally is 150 millionths. Initial testing yields 100,000 to 150,000 switches before intermitent failures (copper is reached.) I want 500,000 switch life at least. QUESTIONS: 1) How thick can nickle plating go? 2) Will adding silver over the nickle yield the switch life I seek? -T.V.

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Justin Medernach

#16996

Re: Nickle plating for SS Metal switch... | 22 December, 1997

| I am designing an SMT pad for a ss metal switch. | Finished copper thickness is .0014 and nickle-plating | originally is 150 millionths. Initial testing yields 100,000 to 150,000 switches before intermitent failures (copper is reached.) I want 500,000 switch life at least. QUESTIONS: | 1) How thick can nickle plating go? | 2) Will adding silver over the nickle yield the switch life I seek? | -T.V. Tom, Flashing a noble metal over the nickel should give you the life you are looking for. We currently produce a product with that exact configuration. eg. gold over nickel as a pad for a switch on a hand held consumer electronics product. I can't give any more specifics on the product but I'm sure this is what you're refering to. best regards, justin medernach

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