Barre d'étain SN99AG0,3CU0,7 The solder alloys of the type TSCX are lead-free and reduced silver content solders. Special alloy ingredients give rise to characteristics that in many areas also result in the TSCX solders having similar characteristics to a TSC 305 solder. In comparison with TSC 305, the TSCX solders are of course significantly cheaper due to their low silver content. The TSCX 0300 and TSCX 0800 variants are copper-free replenishment solders that are used to correct increased copper contents in solder baths. TSCX solders are, of course. compatible with equivalent products.