Description

Low Melt Solder Wire – Sn42/Bi58 | 138°C (280°F) | Precision Electronics Solder | PolarTronix

Low Temperature Solder Wire for Delicate Electronics Repair

The PolarTronix Low Melt Solder Wire is engineered for technicians, electronics repair professionals, and hobbyists who need reliable soldering at significantly lower temperatures. Manufactured with a Sn42/Bi58 (42% Tin / 58% Bismuth) alloy, this low temperature solder wire melts at just 138°C (280°F), helping reduce thermal stress on sensitive electronic components and printed circuit boards.

Whether you’re performing microsoldering, PCB repair, trace repair, connector replacement, BGA rework, SMD soldering, or low-temperature assembly, PolarTronix Low Melt Solder Wire provides excellent flow, strong wetting characteristics, and dependable solder joints while minimizing the risk of overheating nearby components.

Designed for precision electronics work, this solder wire is ideal when repairing delicate devices such as game consoles, smartphones, laptops, tablets, graphics cards, motherboards, automotive electronics, industrial control boards, drones, cameras, and other heat-sensitive electronics.

Features

• Low melting point: 138°C (280°F)
• Alloy: Sn42/Bi58 (42% Tin / 58% Bismuth)
• Reduces heat exposure to sensitive electronic components
• Excellent wetting and smooth solder flow
• Helps minimize PCB pad lifting and thermal damage
• Produces clean, reliable solder joints
• Ideal for microsoldering and precision electronics repair
• Compatible with temperature-controlled soldering stations
• Engineered for consistent professional performance

Ideal Applications

• PCB repair
• Microsoldering
• Surface mount (SMD/SMT) rework
• BGA repair and reballing
• Connector replacement
• Trace and pad repair
• Consumer electronics repair
• Console repair
• Smartphone repair
• Laptop and desktop motherboard repair
• Automotive electronics
• LED assemblies
• Heat-sensitive electronic components

Why Choose PolarTronix?

At PolarTronix, we design products specifically for electronics technicians—not general-purpose soldering. Every product is developed with performance, consistency, and ease of use in mind so professionals can complete repairs with confidence.

Our low melt solder wire delivers dependable results for precision work where minimizing heat is critical, making it an excellent choice for repair shops, manufacturing, research labs, schools, and electronics enthusiasts alike.

Built for professionals. Trusted by technicians. Engineered in the USA.