Proto Solder

The go-to solder for fast, clean work. 63/37 is the go-to choice of hobbyists, repair techs, and engineers. It melts at 183°C and sets instantly, with no in-between stage.

0.5mm for fine-pitch SMD, QFNs, and detail work.
0.8mm for through-hole, wires, and general repair.

• Alloy: Sn63 / Pb37
• Melting point: 183°C (361°F)
• Net weight: 50g
• Flux core: 2.2%

Tested against name-brand solder before we put our name on it.

⚠️ WARNING: This product can expose you to lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.