Spurious said:
Metallic form lead poses no "leeching" hazard.
There are no overtly high lead levels found in the water tables around
LEAD MINES! Oh... and Police FIRING RANGES from the '30s on!
I would say that the lead in solder is better bonded than raw lead or
lead ores at a mine.
And you're still allowed to put great slabs of lead on your roof where the
acid rain can get all over it, but you can't use up an old 0402 component
that has SnPb solder on it. Noooo, that has to go in the special bin for
hazardous waste, and you can't use it for something useful first, naughty
naughty. Stupid! If you're really lucky, the 0402 component from the
"special bin for hazardous waste" might get recycled (at your great
expense), and then someone will put the lead from it on their roof in the
acid rain, where lead is supposed to be.
They got away with it because the electronics industry is used to obeying
arbitrary standards that ordinary people with common sense would never put
up with. Anything that is not designed as trash (10+ year warranty would
be a suitable criterion) should get an automatic exemption to use whatever
solder is most reliable. That would prevent a great deal of pollution
caused by unreliable devices failing and being replaced prematurely due to
mandatory poor choice of solder.
Chris