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Kester is the leading manufacturer of fine diameter cored wire solder for surface mount assembly and repair. The stringent manufacturing process, continuous research into core fluxes and the high purity virgin metals used deliver quality wires to customers and offer rapid and efficient solutions

No-Clean Cored Wire Solders

Characteristics	245
Flux Type	No-Clean
Product Characteristics	Performance similar to a mildly activated rosin core, but leaves a visually cleaner appearance after soldering
Compliant Specifications	Bellcore Issue 3 TR-NWT-000078, ANSI/J-STD-006 Flux designator ROLO
Residue Removel Method	Not required for most applications May be removed by solvent or Kester's #5768 saponifier

Rosin Cored Wire Solders

Characteristics	44 Rosin	88 Rosin	285	Plastic
Flux Type	Activated Rosin (RA)	Highly Activated Rosin (RA)	Rosin Mildly Activated (RMA)	Rosin non-Activated (R)
Product Characteristics	Activated rosin core with excellent wetting action. Industry standard for most electrical and electronic hand soldering	Very high activity rosin flux used for difficult to solder metals	Mildly activated rosin cored wire for sensitive electronic and military applications	Non activated rosin flux
Compliant Specifications	ANSI/J-STD-006	ANSI/J-STD-006	ANSI/J-STD-006	ANSI/J-STD-006
Residue Removal Method	Not required for most applications. May be removed by solvent or Kester's #5768 saponifier	Residue removal is recommended for electrical applications. Use a solvent or Kester's #5768 saponifier	Not required for most applications. May be removed by solvent or Kester's # 5768 saponifier	Not required for most applications. May be removed by solvent or Kester's # 5768 saponifier

Water Washable Cored Wire Solders

Characteristics	331	HF-1189CF	OR-431	Acid	390 Series
Flux Type	Organic Water Soluble	Organic Water Soluble	Organic Water Soluble	Inorganic Acid	Synthetic Resin Water/Solvent Soluble Synthetic Water Soluble
Product Characteristics	Industry standard water washable core for most electrical and electronic hand soldering.	Military approved organic acid core Halogen and polyglycol free for electronics applications.	Activity level similar to an acid flux but suitable for some electrical soldering tasks.	Heat stable highly active flux for very hard to solder metals.	Resin core flux for soldering electrical and mechanical applications. Available in different solder formulations.
Compliant Specifications	ANSI/J-STD-006	ANSI/J-STD-006	ANSI/J-STD-006	ANSI/J-STD-006	ANSI/J-STD-006
Residue Removal Method	Residue removal is required. Use soft or de-ionized water at temperatures of 120-150^oF.	Residue removal is required. Use soft or de-ionized water at temperatures of 120-150^oF	Residue removal is required. Use Kester's #5760 Neutralizer in water followed by a warm water rinse.	Residue removal is required. Use Kester's #5760 Neutralizer in water followed by a warm water rinse.	Residue removal is required. Use soft or de-ionized water at temperatures of 120-150^oF

Standard Wire Diameters

Standard Flux-Core Sizes

Inch	English Wire Gauge Equivalent	Approximate Metric equivalent
0.125	11	3.17
0.093	13	2.36
0.062	16	1.57
0.050	18	1.26
0.040	19	1.02
0.031	21	0.78
0.025	23	0.63

0.020	25	0.50
0.015	28	0.40
0.010	31	0.25

Average weight percentage for Sn60Pb40 alloy. the average weight percentage will vary slightly depending on the density of the alloy.