Kester part number 24-6337-0061 is a professional grade solder wire featuring a Sn63Pb37 eutectic alloy (63% tin, 37% lead) with 3.3% 44 Rosin Activated flux core, supplied on a 1 lb spool in 0.062 inch diameter. This diameter size is well suited for medium to larger PCB assembly jobs, electronics rework, through hole soldering, and precision repair work where reliable wetting and strong joints are essential. The eutectic composition melts at 183 degrees Celsius (361 degrees Fahrenheit) and solidifies at the same temperature, eliminating the plastic range and delivering consistent, professional results. Made in the USA and trusted by technicians and manufacturers, this solder wire performs reliably across demanding soldering applications while the rosin flux requires post solder cleaning for optimal board cleanliness and appearance.
Key Features:
Alloy Composition: Sn63Pb37 (63% Tin, 37% Lead)
Diameter: .062" (1.5 mm)
Weight: 1 lb (approximately 454 grams)
Package Type: Spool (SPL)
Flux Core: 3.3% 44 Rosin Activated Flux
Melting Point: 183° C 361° F
Eutectic solder melts and solidifies at the same temperature.
.062" Diameter suitable for medium to larger sized soldering jobs. Rosin Flux must be cleaned after use.
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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