1.0mm 100G Rosin Core Solder 63/37Wire

Eutectic 63/37 Tin-Lead Alloy Composition: Formulated with 63% tin and 37% lead (Sn63/Pb37), transitioning instantly from liquid to solid state at 183°C (361°F) without an intermediate slushy phase to prevent cold joints.

Integrated Continuous Rosin Core: Features an active rosin flux core distributed evenly throughout the wire, automatically cleaning surfaces, reducing oxidation, and ensuring rapid wetting during application.

Standard $1.0\text{ mm}$ Wire Diameter: Versatile gauge diameter ideal for general PCB assembly, component repair, wire-to-wire splicing, and through-hole soldering.

Low Melting Point & High Thermal Transfer: Melts rapidly at lower working temperatures, protecting heat-sensitive electronic components and delicate pads from thermal stress.

Generous 100 g Spool Quantity: Wound cleanly on a sturdy plastic spool, providing long-lasting supply for production lines, service benches, and engineering labs.

Alloy & Flux Formulation: Composed of high-purity Sn63/Pb37 eutectic alloy with non-corrosive rosin flux core.

Operational Temperature: Optimal soldering iron tip temperature range between 300°C and 350°C (572°F to 662°F).

Health & Safety Handling: Contains lead. Use in a well-ventilated area with a fume extractor or smoke absorber. Always wash hands thoroughly after handling solder wire.

Storage Advice: Keep the spool in a cool, dry location away from moisture and direct heat to maintain flux freshness and prevent wire oxidation.

Gold Standard Eutectic Solder: Position as the premier choice for electronics technicians and hobbyists who demand smooth, shiny, and reliable solder joints with zero joint movement risk during cooling.

Superior Flow Compared to Lead-Free Alternatives: Highlight its low melting point, rapid wetting, and ease of use compared to higher-temperature lead-free alloys.

Recommended Cross-Sell Add-ons: Pair with 60W / 80W Soldering Irons, Soldering Iron Stand + Wire Dispenser, ST-1016-P Smoke Absorber, and RMA223 / Liquid Flux Pens.

Essential Bench Consumable: A staple item for commercial repair shops, university engineering labs, drone maintenance stations, and maker workspaces.