Hi Technetters
I have got a problem with a SMT type mini USB connector. The four pins contacted shield are no-wetting after reflow soldering. But can be solder well by iron.
The pins only plated by Nickel, is it possible the oxidation film creating on pin surface and then affect soldering?
Picture:
https://goo.gl/photos/qap1CBEWzUEJEc5i6
Thanks in advance.
RongJun Deng
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