Kester 44 Flux-Cored Solder Wire is the industry standard for electrical, electronic, and aerospace applications. With its high-activity RA (Rosin Activated) formulation, this solder wire delivers exceptional performance through its “instant-action” wetting behavior, ensuring fast and reliable soldering results.

Key features include:

• Flux content: 3.3%
• Leaded composition with halogen
• High solderability to various metal surfaces
• Tested reliability: Passes IPC SIR testing at both 85°C/85% RH and 40°C/90% RH
• Consistent performance: Trusted RA cored wire for decades
• Standards compliance: Classified as ROM1 per J-STD-004

Perfect for precision soldering tasks, this solder wire guarantees efficient, clean, and durable connections in critical applications.