Hello all,

I have a few question concerning the types of alloys used for smt pastes,
wave solder, and core wire solders used in Lead Free processes. All of your
help would be much appreciated...

I understand that SAC 305 is considered to be the industry standard and
there has been much testing to indicate that it performs well in all of the
mentioned processes stated above. Of course there are other solder
compositions that are available to be used in these applications such as
SAC 359, SAC 387, SAC 396, and SN100C. In terms of the testing of
alternative compositions there is a measured amount of testing involved
with them as well.

The questions are:

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