The Qualitek 50-21700 is a 21 guage (0.032" dia.) lead-free solder in a dispenser pack.
Environmentally safe solder.
This solder is designed to replace the standard lead bearing type of solder for electronic connections.
The reflow temperature is 217° - 219°C.
The alloy is 95.5% Tin (Sn), 4% Silver (Ag) and 0.5% Copper (Cu).
This combination is the best for soldering electronic connections while retarding the dissolution of copper.
It has excellent wetting and spreading properties.
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