Kester part number 24-6337-8800 delivers classic Sn63Pb37 eutectic solder wire in 0.031 inch diameter with 1.1% 245 No Clean flux, ideal for PCB assembly, electronics rework, and through hole soldering where reliable wetting and minimal residue are priorities. The eutectic composition melts at 183 degrees Celsius, offering a narrow plastic range that makes it especially forgiving for hand soldering and automated processes alike. This no clean flux formulation is engineered to minimize oxidation and leave minimal residue on the board, reducing the need for post solder cleaning while maintaining professional grade joint quality. Made in the USA, this spool is a trusted choice for technicians and repair shops that demand consistent, repeatable results across high volume and precision work.
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: 1.1% 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.
Size guide text
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