Kester 24-6337-0053 Solder Wire, Rosin Core, Leaded, Sn63Pb37, 3.3%, 0.050 in (1.27 mm), 44 Series

Manufacturer Part Number: 24-6337-0053
Part Number: 488SO3753
Former Part Number: 111-300
Shipping Weight: 1.01 pounds
Quantity Price
1 - 4 $47.40
5 - 9 $44.56
10 - 24 $42.66
25 or more $38.87
Availability: Currently 196 in stock. Ships same day if ordered by 4 p.m. Eastern Time.
Product Description

Kester 44 Flux-Cored Wire Product Overview:

Alloy: Sn63Pb37

Core Size: 66

Flux: 3.3%

Kester 44 Rosin Flux is an activated rosin formula for use in flux-cored solder wire. 44 has virtually dominated the field of activated rosin core solders for well over four decades. An outstanding performance feature of this flux is the “instant-action” wetting behavior. The high mobility and fast-spreading action of this flux results in more reliable production line soldering. 44 is classified as ROM1 per J-STD-004.

Performance Characteristics:

  • High activity RA formulation
  • Excellent solderability to a wide range of metalizations
  • Industry standard RA cored wire for decades
  • Classified as ROM1 per J-STD-004


The 44 series possesses excellent fluxing ability. The flux residues are non-corrosive, non-conductive and do not require removal in most applications under normal conditions of use. IPA will not clean the residues off the surface of the circuit board after the soldering process. If removal is required, a saponifier or cleaning agent specifically designed to clean a no-clean flux is required to clean the residues.

Kester 44 Series Flux Cored Wire Datasheet

Kester 44 Series Leaded Solder Wire (SDS) Safety Data Sheet

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