Kester "44" resin core solder is designed for electrical, electronic and aerospace applications. 44 Rosin Flux is an activated rosin formula for use in flux-cored solder wire. An outstanding performance feature of this flux is the “instant-action” wetting behaviour. The high mobility and fast-spreading action of this flux results in more reliable production line soldering.

• 3.3% flux
• Leaded, contains halogen
• High activity RA formulation
• Passes both 85°C/85% RH and 40°C/90% RH IPC SIR testing
• Excellent solderability to a wide range of metalizations
• Industry standard RA cored wire for decades
• Classified as ROM1 per J-STD-004