> On Aug 1, 2015, at 5:24 PM, Robert Jarratt <[email protected]>
> wrote:
>
> PS A related question. I struggled somewhat with the Weller Magnastat No. 8
> tip, when trying to solder leads to the ground plane, I could not get the
> solder to stay molten very long. I was using lead-free solder, its melting
> point is much lower than the temperature which a No. 8 tip reaches. The iron
> is 50W. Clearly the ground plane was taking heat away, but is it a problem
> with the tip not being hot enough, the iron not powerful enough, or perhaps
> some operator error?
Politically correct solder is harder to use and has a higher melting point. I
asked one of the professionals at the office about it; her answer was to avoid
it unless it was required for the job. In other words, for hobby use and for
anything else that isn’t sold, stay away from it. Modern components are
perfectly happy being soldered with real solder, even though they are made
lead-free.
I followed that advice and was very happy with the outcome.
Meanwhile, 50 watts isn’t all that much when you have a major heat sink. A
ground plane may be enough to give you trouble, but I suspect it’s the use of
lead free solder that’s the real issue.
paul
