63-37 Tin Lead Rosin Core Solder Wire 0.6mm 100g

63-37 alloy spool for electrical work

This 100 gram spool contains 63 percent tin and 37 percent lead solder wire with a 1.8 percent rosin flux core. The 0.6 millimetre diameter suits fine-pitch circuit board joints and general electrical repair. It melts at 183 Celsius or 361 Fahrenheit for quick, smooth flow. The reel measures 55 millimetres in diameter by 30 millimetres wide and weighs 0.22 pounds total.

Sustained flow at 183 Celsius melting point

Because the alloy melts at a single low temperature, the wire feeds steadily during long soldering sessions without the pasty range that can stall a joint. The rosin core activates continuously, keeping oxidation low even when the iron dwells on a pad. This behaviour helps maintain consistent wetting across many connections in one sitting. The 100 gram length supports extended work without frequent spool changes.

Compact reel fits pocket or bench caddy

The 55 by 30 millimetre spool sits in a small parts tray or shirt pocket, so it stays handy during board-level repairs or cable mending. Its light 100 gram mass adds negligible bulk to a mobile tool kit. The rosin flux leaves a non-corrosive residue that does not require aggressive cleaning for most consumer electronics work. Lead content demands hand washing after use and proper ventilation per California Proposition 65 warnings.