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Kester "44" Resin "RA"
Activated Rosin Core Solder
  • High activity RA formulation
  • Excellent solderability to a wide variety of metallizations
  • Industry standard RA cored wire for decades
  • Classified as ROM1 per J-STD-004

Kester Solder Shown

Product Information
Datasheet 30 KB
MSDS 51 KB
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44 is a high activity RA core flux designed for excellent instant wetting action. Although "44" is a RA-based material, the residues are non-corrosive if not cleaned. Per J-STD-004 is classified as ROM1 flux.

Kester 44 is available in a wide variety of alloys, wire diameters and flux percentages. For most applications, Sn63Pb37. Consult the alloy temperature chart in Kester’s product catalog for a comprehensive alloy list.

The standard wire diameter for most applications is 1.00mm (0.031in). Wire diameters range from 0.25-6.00mm (0.010 to 0.250in). A "Standard Wire Diameters" chart also is also included in Kester’s product catalog.

The amount of flux in the wire dictates the ease of soldering for an application. For most applications, core 66 (3.3% flux by weight) is recommended. Other core sizes, 50 and 58, (1.1% and 2.2% respectively) are available. Kester 44 is packaged on spools of different sizes to accommodate a variety of applications.
 

Ordering Information
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Additional Solder Configurations Available Please Call
2460400018  Kester 24-6040-0018 Wire, Solder; Sn60Pb40; 0.025 in.; Flux-Cored Solder Wire; 1 lbs.  Buy Now $23.14
2460400027  Kester 24-6040-0027 Wire, Solder; Sn60Pb40; 0.031 in.; Flux-Cored Solder Wire; 1 lbs.  Buy Now $22.48
2460400039  Kester 24-6040-0039 Wire, Solder; Sn60Pb40; 0.040 in.; Flux-Cored Solder Wire; 1 lbs.  Buy Now $22.26
2460400053  Kester 24-6040-0053 Wire, Solder; Sn60Pb40; 0.050 in.; Flux-Cored Solder Wire; 1 lbs.  Buy Now $21.71
2463370018  Kester 24-6337-0018 Wire, Solder; Sn63Pb37; 0.025 in.; Flux-Cored Solder Wire; 1 lbs.  Buy Now $23.88
2463370027  Kester 24-6337-0027 Wire, Solder; Sn63Pb37; 0.031 in.; Flux-Cored Solder Wire; 1 lbs.  Buy Now $23.22
2463370039  Kester 24-6337-0039 Wire, Solder; Sn63Pb37; 0.040 in.; Flux-Cored Solder Wire; 1 lbs.  Buy Now $23.01
 
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