• REACH-Compliant, Heat-stabilized, no-clean liquid flux
• Common surface metallizations: Clean copper, gold, palladium, platinum, silver, solder-plate, tin
• Common Alloys to Solder: AuSn, indium alloys, SnAg, Sn63, SAC, and other Pb-free alloys
• Application: Dipping, spray fluxing, spin coating
• Activation: Mildly activated

5RMA-RC and 5RA-RC are heat-stabilized rosin fluxes designed for soldering with preforms or wire. They are formulated for use with a wide range of temperatures and metallizations. Both fluxes are free of materials listed in the REACH SVHC list (Q2, 2015).

5RMA-RC is a no-clean, mildly activated flux. 5RA-RC is compatible with Pb-free alloys, as well as with high-Pb and SnPb alloys.

Cleaning

5RMA-RC is a no-clean flux. Removal of post-reflow flux residue is usually not necessary. If cleaning is desired, commercially available flux residue removers can be used.

Because 5RA-RC is a fully-activated flux, the post-reflow residue must be removed. Solvent-based or semi-aqueous cleaners should be used to remove any flux residues.

Storage and Handling

The shelf life of 5RMA-RC and 5RA-RC is 1 year when stored at 0–30°C. Flux should be allowed to reach ambient temperature prior to use. Containers should be labeled with the date and time of opening.