91-7068-8853 is a leaded flux-cored solder wire manufactured by Kester featuring a Sn63Pb37 alloy composition with 245 flux system. The wire has a diameter of 0.015 inches (0.40 mm) with a core diameter of 0.40 mm and contains 66% flux content by weight, delivering 3.3% lead content for reliable solder joint formation. The 245 flux is classified as ROL0 per J-STD-004 and is Bellcore GR-78 compliant, providing visually acceptable assemblies without cleaning while maintaining soldering quality comparable to mildly activated rosin flux. This no-clean solder wire is designed for electronics assembly applications where flux residue cleanup is not required, making it ideal for high-volume production environments, PCB assembly, and component soldering where process efficiency and assembly quality are critical.