The two most commonly used types of lead-free solder are SnAgCu (tin-silver-copper, also called SAC) and SnCu (tin-copper). SnAgCu alloy with 3% silver and 0.5% copper (SAC305) was initially ...

so it's quicker to use and less challenging to work than lead free solder. However, it's toxic and bad for the environment.

Q: I’m setting up a model railroad on a 6 x 12-foot table. The layout will use Digital Command Control. What would be the ...

Both of them use a piece of wire and, in a way, extend the reach of your soldering iron’s tip. Copper wire would work better because of superior thermal conductivity, but other types of solid ...