Weller T0051388699 Lead Free Solder Spool 250 G

Product Description

The WELLER T0051388699 is a lead free solder supplied on a 250 g spool, formulated from a tin-based alloy for use across a wide range of electrical and electronic soldering applications. It has a melting range of 422.6 degrees F to 429.8 degrees F, which is typical of SAC-family lead free alloys and requires a properly calibrated soldering station set above that range to achieve reliable wetting. The 1.0 mm diameter wire is a versatile gauge suited to both through-hole and surface-mount work. The spool format allows controlled feed whether working by hand or in an automated solder robot setup. Licensed technicians and electronics assembly professionals are the primary users.

This solder is appropriate for residential and commercial repair work, production assembly, and specialized industry applications. The supplier data lists compatible use cases including electrical repair, electronic assembly, automated solder robot processes, automotive, solar, military, aerospace, and medical device work. The 250 g spool size is practical for bench technicians who solder regularly but do not require bulk feed wire. HVAC, refrigeration, and electrical trades working with low-voltage control boards and electronic components will find this gauge and alloy suitable for circuit board repair and sensor lead work.

Key Features

• Lead free alloy formulation meets RoHS-style requirements for restricted hazardous substances
• Melting range of 422.6 degrees F to 429.8 degrees F for predictable reflow behavior
• 1.0 mm diameter wire suits through-hole, surface-mount, and general bench soldering
• 250 g spool provides substantial working supply for repair and assembly tasks
• Compatible with automated solder robot feed systems as well as manual irons
• Listed applications span automotive, solar, aerospace, military, and medical device sectors

Compatibility

Suitable for electrical, electronic, repair, solder robot, home projects, military, aerospace, medical device, automotive, and solar applications as specified by the manufacturer.

Installation Notes

Soldering work on live circuits presents shock and burn hazards — power down and discharge any equipment before applying solder to control boards or wiring terminations. Use a calibrated soldering station set above the maximum melting temperature of 429.8 degrees F to ensure full alloy wetting and avoid cold joints. Work in a ventilated area and use appropriate fume extraction, as flux vapors from any solder alloy can be a respiratory irritant. Consult applicable codes such as NFPA 70 (NEC) for electrical assembly work in trade settings.