表面组装工艺材料(SMT).SMTSMTSMT18330096163217Pb38.1%,Sn61.9%18363Sn/37Pb.18360Sn/40Pb18319062Sn/36Pb/2Ag180-22050IPC-SM-78226010S183-1891/1040MPa,3530010Sn/90Pb300Sn/95Pb3123Sn/97Pb318BGACSP9616316Sn/32Pb/52Bi9642Sn/58Bi13943Sn/43Pb/14Bi163无铅的提出世界无铅日程常用无铅...
表面组装工艺材料(SMT).SMTSMTSMT18330096163217Pb38.1%,Sn61.9%18363Sn/37Pb.18360Sn/40Pb18319062Sn/36Pb/2Ag180-22050IPC-SM-78226010S183-1891/1040MPa,3530010Sn/90Pb300Sn/95Pb3123Sn/97Pb318BGACSP9616316Sn/32Pb/52Bi9642Sn/58Bi13943Sn/43Pb/14Bi163无铅的提出世界无铅日程常用无铅...