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The WELLER T0051386699 is a lead-free solder in alloy composition, supplied on a 500 g spool. It is engineered for professional soldering applications where lead-free compliance is required by code or specification. The wire diameter is 1.6 mm. The melting range runs from 422.6 degrees F at minimum to 429.8 degrees F at maximum, providing a narrow plastic range that supports clean, fast joint formation. This solder is suited for use with temperature-controlled soldering stations and is handled by electronics technicians, HVAC controls specialists, electricians, and other trades performing board-level or wire-termination work.
This solder is appropriate for a wide range of professional and industrial applications including electrical and electronic assembly, circuit board repair, robotic soldering systems, automotive electronics, solar installations, aerospace assemblies, medical device manufacturing, and military-specification work. The 500 g spool size supports both bench repair work and higher-volume production environments. Its lead-free formulation meets RoHS and similar regulatory requirements that restrict the use of lead in electronic assemblies.
Designed for use with temperature-controlled soldering stations and robotic soldering systems that accept 1.6 mm solder wire. Suitable for electrical, electronic, repair, automotive, solar, aerospace, medical device, and military soldering applications as noted in manufacturer specifications.
Soldering work on live electrical assemblies should only be performed after de-energizing and locking out the affected circuit per applicable NEC or facility safety requirements. Set the soldering station to a temperature appropriate for the alloy melting range before feeding wire. Adequate ventilation or fume extraction is required when soldering in enclosed spaces. Flux residue should be cleaned per the assembly specification after joints are completed.
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