Effect of trace platinum additions on the interfacial morphology of Sn3.8Ag0.7Cu alloy aged for long hours
Pt was introduced into Sn3.8Ag0.7Cu (SAC387) solder alloy. Reflow was carried out on a hot plate at 240C for 60s. The interfacial samples were then aged up to 1000h at 150C. IMCs and Kirkendall voids decreased with increasing amount of Pt. SAC387Pt/Cu show a more reliable solder interconnection to SAC387/Cu.
interfacial morphology composite solder intermetallic layer pt addition isothermal aging