MCM Electronics

Liquid Flux for Lead Free SolderingMCM Part #: 20-4476  |  Chemtronics Part #: CW3220

Liquid Flux for Lead Free Soldering 4.8 stars from 3 reviews.
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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.

Product Description

  • 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

  • Product Reviews

    • "Liquid Flux" by tremorman45 on 4/13/2013
      Overall: 5 out of 5

      works great and helps soldering

    • "Workhorse Flux" by DrDerzzle on 8/12/2012
      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.

    • "Prefect" 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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    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
    Catalog Pages

    MCM Cat 57, Page 1167

    MCM Cat 56, Page 982

    PDF Reference

    Requires Adobe Acrobat Reader.

    Mfr. Info

    Chemtronics Logo
    Mfr. Name:Chemtronics
    Mfr. Part Number:CW3220