Kester part number 24-6337-0007 is a professional grade solder wire featuring a Sn63Pb37 alloy composition with 3.3% 44 rosin activated flux, ideal for precision electronics work including PCB assembly, component rework, and through hole soldering on delicate boards. The 0.015 inch diameter makes it well-suited for fine pitch applications and detailed repair work where control and minimal solder volume are essential. This eutectic formulation melts at 183°C, solidifying cleanly without the timing challenges of other alloy blends, and is a trusted choice among technicians for consistent, reliable joints. The rosin activated flux provides strong wetting and excellent flow characteristics, though cleaning is required after soldering to remove residue.
Key Features:
Alloy Composition: Sn63Pb37 (63% Tin, 37% Lead)
Diameter: .015" (0.4 mm)
Weight: 1 lb (approximately 454 grams)
Package Type: Spool (SPL)
Flux Core: 3.3% 44 Rosin Activated
Melting Point: 183° C 361° F
Eutectic solder melts and solidifies at the same temperature.
.015" Diameter suitable for smaller soldering jobs. Rosin Activated 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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