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SnPb reworked with SnPbAg ?

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#48501

SnPb reworked with SnPbAg ? | 20 March, 2007

Hi,

can't find answer to my question on web - maybe someone can help

would it be compatible to use a wire of Sn62Pb36Ag2 for a product made with Sn63Pb37 paste ???

regards

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Elena

#48502

SnPb reworked with SnPbAg ? | 20 March, 2007

I think, it will be no problems, if there's no Bi in a covering of components.

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#48504

SnPb reworked with SnPbAg ? | 20 March, 2007

You need to keep the silver concentration of the solder connection below 2 percent by weight. Concentrations above that level can cause solder connections to fail. We have seen 4 percent concentration discussed. [The 4% assumes a uniform distribution, but typically there is a much larger concentration near the interface].

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