Patent ID: 8221560
Filing Date: 2012-07-17
Classification: B23K,C22C,H05K

Abstract:
1. A lead-free solder alloy which is used in printed circuit boards which have been treated with nickel (Ni)/gold (Au), the alloy comprising: 0.8-1.2 wt % silver (Ag), 0.8-1.2 wt % copper (Cu), 0.01-1.0 wt % palladium (Pd), 0.001-0.1 wt % tellurium (Te), and a balance of tin (Sn), and at least one element selected from the group consisting of cobalt (Co), ruthenium (Ru), rhodium (Rh), lanthanum (La), cerium (Ce) and germanium (Ge), wherein cobalt (Co), ruthenium (Ru) and rhodium (Rh) form CoSn