NC 266-3 is a rosin-free, resin-free, halide-free, no-clean wave solder flux designed to enhance wetting and prevent bridging during the wave soldering process. NC 266-3 offers an enhanced activity level, as well as lower surface tension than other no-clean flux chemistries. NC 266-3 performs well with bare copper, solder coated and organic coated pwbs, leaving negligible post-process residues that are non-conductive and do not require cleaning. NC 266-3 may be utilized with tin-lead and lead-free solder alloys.