We have a surface mount connector from Hirose that has two through hole mounting pins on the side. The solder is wicking up the pins into the body of the connector during reflow, even with adjustments to the PCB solder mask which came directly directly from Hirose.
Various attempts at a method from the board supplier to keep the solder from wicking into the connector have failed. I think this became more of a problem after switching to a lead free process, but I'm not sure. I believe there is also a problem with hand soldering these pins.
Anyways, the solution was to just NOT solder them at all, and rely on the remaining surface mount pins (including the shield pins) to hold to to the board. Now we are seeing connectors ripped off the board in the field, so there is a problem.
Any suggestions to attach those pins to the board? Epoxy (they are worried about it getting into the connector too)? How about a Kapton mask of some sort that is real tight around the pins?
Thanks.
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