Hi Technos,

I have a lead-free board, but some nasty leadless comps are only available leaded, so not supporting 240C.

I am thinking what about soldering everything that works at lead-free temps and then make another soldering pass at about 210C with these comps only. Will this affect the reliability of the lead-free joints, since the solder will get almost pasty? Did anybody try this?

I agree with the ones that will say: "what the heck, they cannot give you compliant parts, don't do it", but it is an important project, the customer knows what this means, but they want to risk.

Btw, I have to make sure the original reliability of the lead-free joints, as good as it is, will not be latered, it is a high-rel application.

Thanks,

Ioan

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