"Ralph Mowery" wrote in message
.net...


I am in the US and just doing my own repairs and building.

Do I need to use any of the lead free solder to repair the boards that
were made usign the lead free solder?

Within the EU; hobby use and repairing originally lead solder equipment is
among the exemptions.

Never bothered swotting up on the laws elsewhere, but I think America and
Asia comply with RoHS purely so they can export to the EU.

RoHS certification is expensive enough, but certification guaranteeing that
cross contamination can't happen in a manufacturing plant that uses both
processes, is much more costly - its much cheaper to impose blanket
compliance with RoHS, even for goods that don't have to comply.

Mixing them depends on individual compositions - visual appearance of the
finished joint is a good indication whether you got away with it.