MCM Electronics

Liquid Flux for Lead Free Soldering By Chemtronics (CW3220) MCM Part #20-4476

5 stars 3 reviews
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Specifications Top

The quart-sized container offers a convenient package size for small OEM's and board repair shops. The Lead-Free Flux applies a non-corrosive, halide-free No Clean flux, that meets the Bellcore Standard TR-NWT-000078 and passes the IPC specification SF-818 for surface insulation resistance (SIR). The instant wetting action of the Lead-Free Flux provides thorough deoxidation of metal surfaces, leaving the best possible surface for solder to metal bonding.

  • Flux is non-corrosive and halide-free
  • Can be used for soldering with lead-free or tin/lead solders
  • Excellent material compatibility
  • Fast drying
  • RoHS Compliant
  • High thermal stability
  • 32 fl. oz. (1 quart) liquid

    CircuitWorks® Lead-Free Flux can be used in all soldering operations, including:
  • Printed Circuit Boards
  • Chip Carriers
  • Surface mount Device Pads
  • Switches and Sockets
    Part Numbers
    MCM Part #:20-4476
    Chemtronics Part #:CW3220
    Package Specifications & Dimensions
    Weight:1.87 lbs.
    Warranty:90 days
    Need to Return?
    Length:8 in.
    Width:5.5 in.
    Height:2 in.
    Shipping Information
    Extra Shipping Charge:No
    Drop Ship:No
  • Product Reviews Top

    • by tremorman45

      on 4/13/2013

      Liquid Flux

      Overall: 5 out of 5

      works great and helps soldering

    • by DrDerzzle

      on 8/12/2012

      Workhorse Flux

      Overall: 4.5 out of 5

      The CW3220 flux is excellent for smaller operations and nearly as good as my reference flux (Kester 2331-ZX). The cost is about the same at the price tag level, except that the Kester is only available in ridiculously expensive pen form, or in 1gal/5gal/55gal quantities, where the shipping and ORMD charges more than double it. At 1L, Chemtronics manages to avoid that charge, though I believe you are still limited to ground shipping. This flux works great with both thru-hole and hand-soldered SMD, including the prototype boards from Schmartboard (just make sure to have a superfine tip and 750F+ with power... I use either Metcal or Tenma 9360/Xytronic LF2000). Cleaning is a breeze afterwards with slight bath in IPA and a gentle once over with brush; leaves no sticky residue. Solder flow and wetting is above average to great, using either Sb/Cu, Sn/Ag/Cu or even Sn/Pb. Personally, my chemistry selection is somewhat restricted by an allergic sensitivity to specific VOC even in low concentration. The Kester and this are the only two so far that I can freely use without a mask or active ventilation and not end up with hives.

    • by lunchboxrts

      on 2/9/2010


      Overall: 5 out of 5

      if your doing any smd de/soldering or any de/soldering then this works great!

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