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tarnishing gold surfaces

2/2/2017 4:07:11 PM

subject board fabrication calls for .05 -.125um of gold over 2 - 5 um of nickel. When doing double sided reflow using same profile, parts of the gold are tarnishing and causing test pad failures. any ideas as to the cause?

Pedro Skou

2/4/2017 4:07:11 PM

Really appreciate your content.I hope you write again soon.

Henri Aroyan

2/4/2017 4:07:11 PM

Pretty good and useful info to my job. Keep on checking your post.

jarmoblo

2/4/2017 4:07:11 PM

Remarkable.It help me a lot. Thank you.

Andras Hollenczer

2/4/2017 4:07:11 PM

Useful!

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