[Elecraft] Solder Question...

[gregory.beat@attbi.com]

While Dick inferred this, I thought that I would clarify this for other readers. 
A eutectic is that specific mixture (alloy for metals) that produces the lowest 
melting (solid/liquid) temperature.

[Tin Lead Alloy]
Tin (63.0%) / Lead (37.0%)  361 degrees F. 

[Tin-Silver Alloy]
Tin (96.5%) / Silver (.5%)  430 degrees F.

[Tin-Lead-Silver Alloy] 
Tin (5%) / Lead (92.5%) / Silver (2.5%)  536 degrees F.

The Tin-Silver is used increasingly for "lead-free" requirements.  Both the 
Tin-Silver and Tin-Lead-Silver alloys have higher melting temperatures.  
These are used for applications where higher temperature extremes may be 
experienced by the soldered joint.

Greg
w9gb