Patent ID: 7723158
Filing Date: 2010-05-25
Classification: H01L

Abstract:
1. A method for producing and cleaning bases with external contacts for surface mounting on circuit mounts, the method comprising: electrodeposition onto a semiconductor wafer or onto semiconductor chips of the bases with external contacts; heat treatment of the bases at temperatures below the melting temperature of a material of the bases; traversing a rapid thermal process (RTP) high-temperature interval during which at least the melting temperature is reached, wherein the high-temperature interval is set to a period t wet etching surfaces of the bases with external contacts by introducing an etchant after the rapid thermal process; and after the wet etching is carried out, surface mounting the semiconductor chips on the circuit mounts; wherein the heat treatment removes volatile substances and lasts for a heat treatment period t wherein the rapid thermal process is performed after the heat treatment of the bases at temperatures below the melting temperature of the material of the bases.