[Elecraft] [K3] what kind of solder and flux?

[Lyle Johnson]

Da> What kind of solder is used on the SMD in the K3? Leaded or Unleaded ?
> And what kind of flux was used.

It is RoHS compliant.

> And not to start a another very long thread, what would people suggest 
> for flux when doing mods?
> I'll use the same solder type. But maybe water soluble flux is not such 
> a good idea for manual rework?

After the board is built, water soluble is not a good idea.  The joints 
will tend to corrode, and I don't like the idea of putting my K3 in the 
family dishwasher for a complete rinse...

I use plain old tin-lead rosin-core solder for SMT rework on my K3.  I 
sometimes use "no clean" flux rather than rosin core.  Depends on which 
spool is nearer when I do the re-work.  But I carefully avoid the spool 
of water-soluble flux which I use for prototype construction.

The regular solder will alloy with the solder on the board, no problem.


73,

Lyle KK7P