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Spool of 0.3 mm tin-lead solder wire, 50 g roll, rosin core flux

TOWOT 63-37 Solder Wire 0.3mm 50g 1.8% Flux

SKU CH-AR72-9486D

Rosin-core Sn63 Pb37 solder wire, 0.3 mm diameter, 50 g reel with 1.8 % flux for circuit boards and appliance repair

  • Fit and compatibilityH-0350
  • Sn63/Pb37 alloy melts at low temperature for fast joints
  • 8 % rosin flux cleans surfaces while you solder
  • 3 mm diameter suits fine-pitch board work
  • 50 g spool covers many small repair tasks
  • Ideal for circuit boards, TVs, radios and DIY projects

Alloy and Flux Core

TOWOT 63-37 solder wire is a rosin-core alloy designed for electrical soldering tasks. It suits technicians, hobbyists and DIY users who need reliable joints on circuit boards, home appliances and similar electronics work.

Sn63 Pb37 Composition

The wire uses a tin sixty-three percent lead thirty-seven percent alloy with one point eight percent flux content. This specific ratio determines melting behaviour and wetting performance for the intended applications.

Diameter and Spool Weight

At zero point three millimetres diameter the wire handles fine-pitch components and dense board work comfortably. The fifty gram spool provides enough length for multiple small jobs but will run out on large harnesses or production runs.

How it compares

Measured against everything we stock in Soldering Irons & Stations, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 73% of the 802 comparable items (median $25.99).

Specifications

Compatibility
Fit and compatibilityH-0350

Questions about this item

How does the 0.3 mm diameter affect soldering on small circuit-board pads?

The 0.3 mm wire feeds precisely into tight pad spacing, letting you apply just enough Sn63 Pb37 alloy for each joint without bridging adjacent tracks.

What does the 1.8 % rosin flux core do during a typical repair joint?

The 1.8 % flux cleans oxidation instantly as the wire melts at low temperature, so the solder wets copper traces quickly and leaves a reliable, shiny fillet.

Will the 50 g spool fit a standard benchtop dispenser?

The compact 50 g spool (H-0350 fitment) sits on most desktop holders and pays out smoothly for hand-soldering sessions.

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