Kester 24-7068-7617 is a 1 lb spool of lead, free, no-clean, flux-cored solder wire with a diameter of .025 inches. It is comprised of SAC305, or SN96.5AG3CU.5, or 96.5 percent tin, 3 percent silver, and .5 percent copper. Additionally, it has a #58 core size and a 275 (no-clean) flux type.
275 No-Clean Cored Wire / For Lead-bearing and Lead-free alloys
Kester 275 No-Clean Flux for cored solder wire was developed to provide superior wetting performance for hand soldering in the electronics industry. The chemistry is based on some of the same principles that have been safely used for years in mildly activated rosin fluxes. The use of 275 No-Clean Flux results in an extremely clear post-soldering residue without cleaning. The unique chemistry in Kester 275 was also designed to reduce spattering common to most core fluxes. Kester 275 can be used for both lead bearing and lead-free soldering.
Colorless transulcent residues
Improves wetting performance
Excellent solderability and fast wetting to a variety of surface finishes
Eliminates the need and expense of cleaning
Low smoke and odor
Compatible with leaded and lead-free alloys
Classified as ROL0 per J-STD-004
Compliant to Bellcore GR-78