CYNEL LEC-LUT0112-1000 Sn60Pb40 Rosin Core Solder Wire 3mm 1kg Spool

For general electronics work, the CYNEL LEC-LUT0112-1000 stands apart with its true eutectic Sn60Pb40 alloy and a generous 2.5% rosin flux core. This 3 mm wire on a 1 kg spool melts sharply at 183 °C, flows smoothly, and leaves clean, reliable joints on copper, brass, and tinned surfaces. Unlike thinner hobby wires, the 3 mm diameter delivers more solder per second, making it ideal for larger connections, wire splicing, and repair tasks where speed and heat transfer matter.

Highlights

• Eutectic Sn60Pb40 alloy: 60% tin, 40% lead, melting point 183 °C, no plastic range
• Rosin flux core, 2.5% content, non-corrosive residue, excellent wetting
• 3 mm diameter for high-volume soldering and larger joints
• 1 kg spool for extended use in workshops and repair benches
• High electrical and thermal conductivity for dependable connections

In daily use

This solder wire performs consistently across a wide temperature window (183–190 °C), allowing a standard soldering iron or gun to produce shiny, mechanically strong fillets. The rosin flux activates quickly, removing oxides without aggressive cleaning, and leaves a clear, non-conductive residue that can be left in place or removed with isopropyl alcohol. The 3 mm gauge is especially effective for tinning wires, soldering connectors, and repairing through-hole components on older PCBs. Because the alloy is eutectic, it transitions directly from solid to liquid, reducing the chance of cold joints during hand soldering.

Full specifications

• Alloy composition: Sn60Pb40 (60% tin, 40% lead)
• Wire diameter: 3 mm
• Net weight: 1000 g (1 kg)
• Melting point: 183 °C (eutectic), working range 183–190 °C
• Flux type: Rosin core
• Flux content: 2.5%
• Product form: Wire on spool
• Density: approx. 8.5 g/cm³
• Corrosivity: Non-corrosive flux residue
• Electrical conductivity: High
• Thermal conductivity: Good
• RoHS compliance: No (contains lead)
• Packaging: Spool

Final note

For professionals and serious hobbyists who need a dependable leaded solder in a practical 1 kg format, the CYNEL LEC-LUT0112-1000 delivers consistent eutectic performance with minimal waste and maximum joint integrity.