Lead-free solder alloys have been around for as long as people have done soldering, with sources dating back about 5,000 years. Most of these alloys were combinations like copper-silver or silver ...

We tested it at 600 degrees for leaded solder and 650 degrees for lead-free solder. In both cases, the solder flow was quick, and it formed a smooth, solid seam. The small soldering iron comes ...

The industry initially dug in its heels and made arguments against switching to lead-free solders, some of which were valid enough chemically and electronically to earn exemptions from RoHS.