Kester part number 24-6337-8801 is a classic Sn63Pb37 eutectic solder wire with a 0.031 inch diameter and 245 rosin activated flux core, designed for general purpose electronics assembly, PCB rework, through hole soldering, and component repair. The 2.2 percent flux load provides reliable wetting and joint formation while minimizing post solder residue, making it ideal for applications where cleaning access is limited or where a no clean approach is preferred. This 1 pound spool delivers consistent performance across manual soldering operations and is trusted by technicians and hobbyists alike for its predictable melt behavior and the eutectic composition's 183 degrees Celsius melting point. Made in the USA, Kester 24-6337-8801 represents a professional grade choice backed by decades of soldering expertise.
Key Features:
Alloy Composition: Sn63Pb37 (63% Tin, 37% Lead)
Diameter: .031" (0.8 mm)
Weight: 1 lb (approximately 454 grams)
Package Type: Spool (SPL)
Flux Core: 2.2% 245 No Clean Flux
Melting Point: 183° C 361° F
Eutectic solder melts and solidifies at the same temperature.
.031" Diameter suitable for medium sized soldering jobs. No Clean Flux designed to be left on the board with minimal cleaning.
Ultra fine sized diameter useful for precision soldering and micro electronics.
.015" (0.4 mm)
Very fine sized diameter useful for precision soldering and jobs requiring small amounts of solder.
.020" (0.5 mm)
Fine sized diameter used for through hole and and surface mount work. Delivers a Controlled amount of solder.
.025" (0.6 mm)
Ideal for standard circuit board components where precision is needed but not ultra-fine work.
.031" (0.8 mm)
Ideal for fixing circuit boards, replacing components, and general rework. Popular for Arduino, Raspberry Pi, and DIY projects. It's a versatile diameter, often called the "sweet spot" for electronics.
.040" (1.0 mm)
Perfect for surface-mount devices (SMDs) and medium components where precision is key but more solder is needed.
.050" (1.27 mm)
Used for various tasks where a balance of flow and control is required, like general electrical repairs.
.062" (1.5 mm)
medium-thickness wire ideal for general electronics, larger through-hole components, appliance repair, automotive work, and crafts like stained glass
.093" (2.36 mm)
versatile, medium-to-thick wire used for general and heavier-duty electrical, electronics, automotive, and HVAC repairs/manufacturing.
