0.4mm Heat Resistant Welding Wire (Blue)

This 0.4mm heat-resistant blue welding wire is designed for precision electronics rework, prototyping, and compact device assembly. Featuring a flexible silver-plated copper core and resilient PFA insulation, it delivers dependable conductivity in challenging thermal conditions. It is an ideal choice for makers, students, and engineers working on PCB repairs, jumper wiring, and wearable electronics.

Wide operating temperature range

Rated to withstand temperatures from -60°C to 250°C, this wire maintains its integrity in harsh thermal environments. It also offers built-in resistance to moisture and corrosion for long-lasting solder joints.

Silver-plated stranded core

The internal conductor is composed of seven 0.08mm silver-plated copper strands that deliver reliable electrical performance. With a slim 0.4mm outer diameter, it provides the flexibility needed for fine-pitch soldering.

Durable PFA insulation

A tough PFA protective coating shields the conductor against heat and physical wear. The bright blue colour allows for easy identification and neat signal routing on crowded circuit boards.

Optimised for micro electronics

This wire is suited for circuit board flying wires, jumper welding, and wearable technology prototypes. Each package includes a single 50m spool to support extensive repair and build projects.