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Will tin plated pins survive overmolding temperature?

May 21, 2012

Q.
We are using Tin plated terminals; base material CRCA; to be overmolded in plastic.

Our supplier suggested that Tin plating will melt as the plastic temperature reaches 240-260 degrees, and Tin melting temperature is only 232 degrees.

My question is whether Tin plated terminals can not be overmolded in plastic?

Please share your opinion

Sunil Solanki
Customer - Pune, Maharastra, India

May 25, 2012

A. There is no problem. It is a "done every day" thing. Indeed plastic melts at high temperature but inside the barrel then solidifies almost instantly inside the mold. The steel parts will take some heat but never enough to re-melt the plating.
G. Marrufo-Mexico

Guillermo Marrufo
Monterrey, NL, Mexico

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