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The WELLER T0051386799 is a lead-free solder supplied on a 500 g spool, formulated from a tin-based alloy designed for professional soldering applications across electrical, electronic, and specialty trades. With a melting range of 422.6 degrees F to 429.8 degrees F and a wire diameter of 1.2 mm, this solder delivers consistent flow and joint integrity on a wide variety of connection types. The spool format supports both hand soldering and automated solder robot processes, making it practical for bench technicians and production environments alike. Licensed electricians, electronics technicians, and repair professionals are the primary users of this product.
This lead-free solder alloy is suited for residential and commercial electrical work, electronic component assembly, and specialty soldering in demanding sectors including military, aerospace, medical device manufacturing, solar installations, and automotive electronics. The 500 g spool size supports extended work sessions without frequent material changeovers, making it a practical choice for shops and field technicians handling volume repair or assembly tasks. Its lead-free formulation aligns with RoHS-compliant and environmentally conscious project requirements.
Designed for use with standard soldering irons, soldering stations, and automated solder robot equipment that accept 1.2 mm diameter solder wire across electrical and electronic assembly applications.
This solder is intended for use by qualified electricians, electronics technicians, and trade professionals familiar with proper soldering technique and safety practices. Always power down and de-energize circuits completely before soldering any live electrical components. Work in a well-ventilated area and use appropriate fume extraction equipment, as solder flux vapors require respiratory precautions even with lead-free alloys. Follow applicable codes including NEC guidelines when soldering electrical connections in listed assemblies.
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