Patent ID: 7506794

Claim:
A method of forming high-temperature alloy solder standoffs for solder in injection molded solder molds, said method comprising: providing a mold consisting of a boro-silicate glass material and having a plurality of cavities formed in a surface thereof; lining select of said cavities at various locations on said mold with a metal; filling all of the cavities with a solder to the level of the mold surface; alloying said solder in the mold cavities, which are lined with said metal to form alloy solder balls; contacting the solder and alloyed metal and solder balls with bonding pads on a superimposed semiconductor wafer; raising the temperature caused by alloying of said metal and solder to above that of the solder so as to cause the solder to transfer to the bonding pads on the semiconductor wafer; removing the mold from said semiconductor wafer while said solder and metal and solder alloy balls remain on said wafer bonding pads; and superimposing bonding pads on a substrate on said solder and metal and solder alloy balls and raising the temperature to melt the solder but lower than the temperature for melting the metal and solder alloy so as to enable the latter to provide a standoff between said semiconductor wafer and said substrate.