The invention relates to a semiconductor lamp (2) having a light-emitting semiconductor device, the semiconductor device comprising a carrier (3) and at least one light-emitting semiconductor component (4) on the carrier, and a heatsink (1), wherein the heatsink has a first main face (101), the semiconductor device is located adjacent to the first main face, the carrier facing the first main face, the semiconductor device is thermally coupled to the heatsink, and the heatsink has at least one feedthrough (110) for electrical connection of the semiconductor device.