[Elecraft] Solder Question...

[Don Wilhelm]

Trev,

The 63/37 solder is 'eutectic' (sp=?) - which means that it has no plastic
state, it goes from molten directly to solid.  That means no cold solder
joints caused by movement while the solder is cooling.

73,
Don W3FPR

----- Original Message -----
>
> I've always used 60/40 alloy solder (or 2% Silver for SMT) , but was
> wondering about the 63/37 alloy? Was wondering what the purpose of the
> different alloys was, other than the melting point (190 C for 60/40 and
> 183 C for 63/37). Is one more preferable for rework?
>