What is the melting point of low-temperature solder wire and what are its advantages?

Low-Temperature Solder Wire

Low-temperature solder wire is a core soldering material for soldering heat-sensitive components, preventing high-temperature damage, and adapting to low-temperature soldering processes. The most critical questions for many electronics manufacturers and producers of heat-sensitive electronic components are: What is the melting point of low-temperature solder wire? Can it effectively protect components from damage during soldering? This article will precisely answer the melting point parameters of low-temperature solder wire and outline the performance characteristics and applicable scenarios of lead-free low-temperature solder wire, helping you choose a stable lead-free low-temperature solder wire suitable for various low-temperature soldering and low-temperature operating conditions.

The melting point of lead-free low-temperature solder wire is 138°C. This is not an arbitrary setting but the precise result of balancing the heat resistance limits of heat-sensitive components with soldering process requirements. Therefore, whether it's for producing heat-sensitive electronic components like LED beads, flexible circuit boards, and BGA packages, or for repairing precision electronic equipment, low-temperature solder wire leverages its low-temperature characteristics to complete reliable soldering while maximizing protection of components from damage.

Advantages of 138°C Low-Temperature Solder Wire

Low Soldering Operating Temperature: The soldering working temperature is around 200°C, significantly lower than traditional ordinary lead-free solder wire, effectively preventing high-temperature damage to sensitive components (such as chips, PCB boards, etc.).

High Soldering Efficiency & Excellent Wettability: The low-temperature solder wire's alloy composition consists of tin and bismuth, processed by extruding with highly active rosin flux. It exhibits superior solder fluidity and through-hole soldering capability, achieving up to 100% wettability.

Environmentally Friendly & Compliant with International Standards: Environmentally friendly low-temperature solder wire is produced using a pure tin and pure bismuth alloy ratio, contains no lead, and has passed RoHS testing, meeting environmentally friendly production requirements.

Singway has focused on low-temperature solder wire application solutions for many years. Our independently developed and produced 138°C low-temperature solder wire offers clear advantages—it meets environmental requirements while significantly reducing thermal shock during the soldering process, effectively avoiding issues common with high-temperature soldering such as PCB board deformation, component desoldering, and pin oxidation. It is particularly suitable for soldering heat-sensitive components. For more information regarding low-temperature solder wire selection, process consultation, or bulk purchasing needs, please feel free to contact Singway at any time!