• Halogen-free per J-STD-004B (To be halogen-free per J-STD-004B, the formula must contain less than 500ppm of any kind of halogen, ionic or nonionically bonded chlorine, bromine, or fluorine. This is new to J-STD-004B since fluxes that conform to the original J-STD-004 or J-STD-004A may still contain halogens that only disassociate at soldering temperatures, but leave a residue that contains ionic halogen).
  
• Light-colored, low-smoking, rosin-containing flux: Rosin, modified rosins, and resins contribute to enhanced heat stability and reliability; however, in some cases, rosins and resins may interfere with probe-testability.
  
• Tested compatibility with Hot Air Solder Leveled (HASL), Immersion Silver, Electroless Nickel Immersion Gold (ENIG), and Organically Solder Preserved (OSP) Copper surfaces.
  
• Tested for use with all common lead-free, low- or no-silver lead-free, tin-lead alloys, and many others

Indium Corporation's Exceptional Flux-Cored Solder Wire: Quality, Compatibility, and Performance

Indium Corporation is quickly becoming known as one of the highest quality, full line suppliers of flux-cored wire solder.
Indium Corporation uses only “conflict-free” and grade A (per ASTM B32) metals, as well as other high purity metals for its flux-cored solder wire. Our materials have been tested and certified to meet IPC J-STD-004B and other relevant industry specifications, including the legacy military specification QQ-S-571f. Indium Corporation’s flux-cored solder wire is well known for its:

• Void-free
• Evenly layer winding
• Low oxide shiny appearance over time
• Non-offensive odor for the 800 series and 200 series fluxes

CW-807 is Indium Corporation’s best-selling flux-cored solder wire, primarily because it is compatible with all Indium Corporation no-clean solder pastes, wave fluxes, and all common soft solder alloys. This high-quality solder wire is renowned for its versatility and performance across various soldering applications. It also solders very well while still meeting the most recent requirements of J-STD-004B type ROL0. CW-807 contains less than 500ppm total halogen, so it can be considered halogen-free by both J-STD-004B and JEITA ET-7304. CW-807 passes the more stringent Surface Insulation Resistance (SIR) and Electromigration (ECM) requirements of J-STD-004 revision B; therefore, the no-clean residue will be electronically safe for virtually all applications. Also when properly configured, cored solder wire with CW-807 yields superior results in automated soldering operations, including laser soldering.

In the core, CW-807 has a clear, colorless appearance. Upon soldering, CW-807 smokes very little and has a mild, sweet odor. CW-807 contains no added volatile solvents or water absorbent materials to limit spattering. The flux residue is clear and slightly shiny. It typically blends in well with epoxy glass circuit boards and does not detract from the board’s appearance.

Indium Corporation’s cored solder wire has been designed to be fully compatible with our solder paste, wave fluxes, and rework fluxes, and is also expected to be compatible with many of our Competitive Products. For example, CW-807 cored solder wire flux is not only compatible with Indium8.9HF Solder Paste, but also with our 5.2LS, 8.9 series, 92 series, and 10 series products. Indium Corporation determines compatibility primarily by matching flux chemistry. However, a select number of wave, reflow, and rework product combinations have been thoroughly tested to ensure that the combined flux residues meet the electrical and reliability requirements of IPC J-STD-004B.