Weller Wire, 0.5 mm Lead Free Solder, 217 °C Melting Point

This lead-free solder is a rosin-flux cored wire designed for soldering tasks in electronics and related industrial settings. It supplies a low-impurity alloy suited to hand and machine soldering processes where lead-free materials are required. The wire form and fine diameter support precision work across various assembly and repair contexts.

• 96.5% tin composition provides predictable wetting and joint formation
• 3% silver content increases mechanical strength of joints
• 0.5% copper reduces brittle intermetallic growth during service
• 0.5mm wire diameter enables fine-pitch soldering accuracy
• 217°C melting point supports consistent reflow and soldering profiles
• 100g spool format offers convenient handling for frequent use

• Suitable for soldering electronic components on dense assemblies
• Ideal for precision rework of surface-mount devices
• Used with wave or selective soldering equipment in small batches
• Can be used for connector and cable terminations requiring lead-free alloys

The rosin-based flux provides Active soldering performance with residues that are typically mildly tacky and may require solvent cleaning in sensitive circuits.

The alloy transitions at 217°C, permitting standard lead-free soldering temperatures with controlled heat application to avoid thermal stress.

The 3% silver fraction increases tensile and shear strength of joints, improving cyclic load endurance compared with tin-only alloys.

The wire form and 0.5mm diameter make it appropriate for hand soldering and for feeding in automated dispensers or soldering heads.