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Solder Flux

Providing a wide range of the Fluxes required for all types of electrical and electronic applications, including surface mount soldering and desoldering.

From Rosin fluxes to water-soluble organic and inorganic Acid fluxes, the right flux for the job is essential in achieving an excellent solder bond and preserving the integrity of sensitive components.

When soldering, don’t forget to keep the area well ventilated with personal use Benchtop Smoke Absorbers or multi-person Volume Fume Extraction systems.

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Displaying 1 - 21 of 40 products found
  • Kester NF372-TB No-Clean Soldering Flux

    Multiple item options available
    Mfr ID: NF372-TB
    The Kester NF372-TB is a zero halogen, no-clean, low solids liquid flux designed to withstand long dwell times and high preheat temperatures needed in thick board assemblies. NF372-TB is classified as ROL0 flux under IPC J-STD-004B.

     

  • Kester 2235 Organic Activated Soldering Flux

    Multiple item options available
    Mfr ID: 2235
    The Kester 2235 is a high activity 11% solids organic flux designed for automated soldering of circuit board assemblies where a more aggressive flux is required, but reliability considerations are paramount. 2235, a flux with comparably low solids in respect to other fluxes in the same category, will produce fewer skips on the bottom side surface mount pads.

    In Stock

  • Kester 2331-ZX Organic Activated Soldering Flux

    Multiple item options available
    Mfr ID: 2331-ZX
    The Kester 2331-ZX is an innovation in organic acid water soluble flux chemistry for soldering circuit board assemblies. This unique, neutral pH chemistry flux provides the best ionic cleanliness of any organic water soluble flux available to the electronics industry. This popular flux has been used for soldering critical assemblies in the computer, telecommunications and other industries. No offensive odors will be emitted during soldering. 2331-ZX will not create excessive foaming in standard water cleaning systems.

    In Stock

  • Kester 951 No-Clean Soldering Flux

    Multiple item options available
    Mfr ID: 951
    The Kester 951 is a zero halogen, non-rosin flux designed for wave soldering, conventional and surface mount circuit board assemblies. The extremely low solids content (2.0%) and nature of the activator system results in practically no residue left on the assembly after soldering. Boards are dry and cosmetically clean as they exit the wave solder machine. There are no residues to interfere with electrical testing. 951 exhibits improved soldering performance to minimize solder bridges (shorts) and excessive solder defects.

    In Stock

  • Kester 959 No-Clean Soldering Flux

    Multiple item options available
    Mfr ID: 959
    The Kester 959 is a no-clean, non-corrosive liquid flux that is designed for the wave soldering of conventional and surface mount circuit board assemblies. 959 was developed to minimize the formation of micro-solder balls during wave soldering operations. 959 leaves evenly distributed residues for the best cosmetic appearance.

    In Stock

  • Kester 959T No-Clean Soldering Flux

    Multiple item options available
    Mfr ID: 959T
    The Kester 959T is a no-clean, non-corrosive, liquid flux that is designed for the wave soldering of conventional and surface mount circuit board assemblies. 959T was developed to minimize the formation of micro-solder balls during wave soldering operations. 959T leaves evenly distributed residues for the best cosmetic appearance.

    In Stock

  • Kester 2120 Organic Activated Soldering Flux

    Multiple item options available
    Mfr ID: 2120
    The Kester 2120 is a halide-free, organic flux designed for automated soldering of circuit board assemblies. This flux provides good activity on both bare copper and solder coated boards. The absence of chlorides, bromides, phosphates and highly corrosive materials facilitates removal after soldering. 2120 produces bright, shiny solder joints and high ionic cleanliness after water cleaning. 2120 provides better surface insulation resistance than typical water soluble fluxes, making it particularly suitable for surface mount assemblies.

     

  • Kester 2220-VF Organic Activated Soldering Flux

    Multiple item options available
    Mfr ID: 2220-VF
    The Kester 2220-VF is a high activity, organic flux designed for lead-free automated wave solder applications. The flux will provide maximum capillary wetting action up plated through holes, making it ideal for use on multilayer boards. Along with this enhanced activity, 2220-VF flux produces bright, shiny solder joints and the residue after soldering is effectively removed in standard water cleaning systems.

    In Stock

  • Kester 950E No-Clean Soldering Flux

    Multiple item options available
    Mfr ID: 950E
    The Kester 950E is a zero halogen, non-rosin organic flux designed for wave soldering, conventional and surface mount circuit board assemblies. The extremely low solids content (2.0%) and nature of the activator system results in practically no residue left on the assembly after soldering. Boards are dry and cosmetically clean as they exit the wave solder machine. There are no residues to interfere with electrical testing.

    In Stock

  • Kester 985M No-Clean Soldering Flux

    Multiple item options available
    Mfr ID: 985M
    The Kester 985M is a low solids, halide-free, no-clean flux that is designed for wave solder, selective solder and touch up processes. 985M was developed for use with both traditional tin-lead and lead-free solder alloys. 985M exhibits improved soldering performance to minimize solder bridges (shorts) during all soldering operations.

    In Stock

  • Kester 958 No-Clean Soldering Flux

    Multiple item options available
    Mfr ID: 958
    The Kester 958 is a no-clean, non-corrosive liquid flux that is specifically designed for the wave soldering of conventional and surface mount circuit board assemblies. 958 was developed to give excellent soldering performance on bare copper printed circuit boards treated with OSP coatings. Essentially, no residue remains after soldering. A major advantage of this flux is the reduced odor associated with the soldering process.

    In Stock

  • Kester 952-S No-Clean Soldering Flux

    Multiple item options available
    Mfr ID: 952-S
    The Kester 952-S is a zero halogen, non-rosin organic flux designed specifically for use in tabber and stringer equipment of Photovoltaic Assembly (PV) module industry by soldering tabs to cell contacts. 952-S could be applied directly to interconnecting ribbon by hand soldering or auto-equipment with tabber and stringer soldering system, by dipping or spraying.

     

  • Kester 2224-25 Organic Activated Soldering Flux

    Multiple item options available
    Mfr ID: 2224-25
    The Kester 2224-25 is a high activity, organic flux designed for automated soldering of circuit board assemblies where a more aggressive flux is required, but reliability considerations are paramount. The flux will provide good capillary wetting action up plated through holes, making it suitable for multi-layer boards. The residue after soldering is effectively removed in standard water cleaning systems.

    In Stock

  • Kester 977 No-Clean Soldering Flux

    Multiple item options available
    Mfr ID: 977
    The Kester 977 is an organic water soluble, water-based, no-clean chemistry for high quality soldering of electronic circuit board assemblies. Designed for wave soldering applications, 977 provides good wetting on most surface finishes. The flux was specifically designed to reduce bridging, which is commonly associated with VOC-free, no-clean fluxes. 977 has excellent soldering properties for improved productivity without sacrificing reliability of the assembly.

    In Stock

  • Kester 979 No-Clean Soldering Flux

    Multiple item options available
    Mfr ID: 979
    The Kester 979 is a VOC-free, no-clean flux formulation for high quality, low-defect soldering of electronic circuit board assemblies. This flux's finely tuned activation system offers the best wetting available in VOC-free liquid flux technology and the shiniest solder joints. 979 also reduces micro solderballing on glossy laminates and between connector pins.

    In Stock

  • Kester 1544 Rosin Activated Soldering Flux

    Multiple item options available
    Mfr ID: 1544
    The Kester 1544 activated rosin liquid flux is a homogeneous solution of high quality, purified grade WW rosin blended into an alcohol solvent system. A very effective activating agent has been added to provide superior fluxing ability. 1544 is a liquid equivalent of Kester 44 activated rosin core solder. The desired flux activity and the amount of rosin residue are determined by the concentration (solids percentage) of the flux. 1544 can be used for solder coating or tinning bare leads.

    In Stock

  • Kester 185 Rosin Mildly Activated Soldering Flux

    Multiple item options available
    Mfr ID: 185
    The Kester 185 mildly activated rosin is classified as type ROL0 flux under IPC J-STD-004 Joint Industry Standard. Under the older MIL-F-14256, 185 was QPL approved as type RMA. This formulation consists of high quality, purified rosin to which a synergistic combination of activating agents has been incorporated. The fluxing ability of 185 flux is much greater than ordinary mildly activated rosin fluxes and approaches the activity of fully activated rosin fluxes.

    In Stock

  • Kester 186 Rosin Mildly Activated Soldering Flux

    Multiple item options available
    Mfr ID: 186
    The Kester 186, under MIL-F-14256, was QPL approved as type RMA. Although the fluxing ability approaches that of type RA flux, the flux residue after soldering is non-corrosive and non-conductive. 186 rosin flux has been developed for use in critical applications where difficult assemblies are to be soldered, but process requirements stipulate use of type RMA flux. This flux possess high thermal stability for soldering multi-layer assemblies which require a high preheat temperature.

    In Stock

  • Kester 1589 Rosin Activated Soldering Flux, 1 gal Bottle, Amber

    ID: KES1589G
    Mfr ID: 6300001589
    The Kester 1589 activated rosin liquid flux is a homogeneous solution of high quality, purified grade WW rosin blended into an alcohol solvent system. 1589 includes a very effective activating agent to provide superior fluxing ability. 1589 can be used for solder coating or tinning bare leads.

    In Stock

  • Kester 145 Rosin Non-Activated Soldering Flux, 1 gal Bottle, Amber

    ID: KES145G
    Mfr ID: 6300000145
    The Kester 145 non-activated rosin flux is a clear homogeneous solution of pure water-white rosin dissolved in a suitable solvent. The particular solvents used are liquids which exhibit the same non-corrosive and non-conductive properties as rosin itself. 145 is carefully processed to remove foreign particles found in natural rosin.

    In Stock

  • ID:
    Mfr ID: 450B
    The Kester 450-B organic flux is a water soluble formulation that provides excellent wetting properties without the use of organic acids or corrosive activators. The flux is specifically designed for use in rework applications. Residues can be left in place for extended periods of time without detrimental attack on metal surfaces or the formation of insoluble residues.

     

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