Sn 96.5% - Cu 0.5% - Ag 3.0%
2.2% w/w RMA core flux.
Melts at 217C.

Ag bearing solders are the perfect choice for very high performance audio and digital electronics BUT you must be very careful not to contaminate the solder alloy with that from the board you are working on.  The existing solder must be cleaned away thoroughly and then the pad should have a small quantity of this solder applied and then wicked off to "rinse" the area.  When correctly used this solder is one of the highest performing solders on the market.  However contamination will lead to imperfections in the cooled solder.