Patent ID: 6450397
Filing Date: 2002-09-17
Classification: B23K,H05K

Abstract:
A method of fabricating solder columns onto solder lands at designated locations of a semiconductor device surface, which comprises the steps of:(a) providing a substrate having said designated locations thereon for fabrication of solder columns; (b) providing an extrusion mold having apertures extending therethrough and a pair of opposing surfaces to which said apertures extend; (c) aligning said designated locations with said apertures along one of said surfaces of said extrusion mold; (d) providing a solder tape over the other of said opposing surfaces of said extrusion mold and over said apertures; (e) extruding the portion of said solder tape over said apertures through said apertures to said designated locations; and (f) permitting the portion of the solder tape extruded onto said designated locations to set.