1. Product Overview
SN100C® is a lead-free, silver-free solder alloy developed by Nihon Superior in Japan and widely adopted since 1999. It consists mainly of tin with controlled additions of copper, nickel, and germanium. The nickel stabilizes solder joints by reducing copper dissolution, while germanium lowers dross formation and enhances solder flow. This alloy produces smooth, bright, and bridge-free solder joints, with performance comparable to SAC alloys but at a significantly lower cost. It fully complies with IPC J-STD-006 standards.
2. Applications
SN100C is suitable for wave and selective soldering in diverse electronic manufacturing processes. It is compatible with all no-clean and water-soluble electronic-grade fluxes and available in bar, solid wire, cored wire, and solder paste forms. Its stable properties make it an economical and reliable alternative to silver-based alloys in commercial applications.
3. Typical Properties – Specifications
- Alloy Composition: Sn (Balance), Cu (0.7%), Ni (0.05%), Ge (0.009%)
- Melting Temperature: Eutectic at 227°C (441°F)
- Density: 7.4 g/cm³ (Archimedes method)
- Shelf Life: 7 years at room temperature under proper storage conditions
- Flux Compatibility: Works with both no-clean and water-soluble fluxes
- Availability: Offered in 1.1 kg triangular bars, 3 kg AIM Safety Bars, solid wire, flux-cored wire, and solder pastes
- Safety: Requires proper ventilation and protective equipment; hazardous waste must be disposed of in approved containers.