Electrical device having component heat dissipation

An electrical device with component heat dissipation, particularly a switching and control device for motor vehicles, includes a circuit board arranged in a package. The circuit board is equipped with electrical components, whose heat energy can be dissipated onto the circuit board, and a plug-in connector which has a connecting part connected with the circuit board and a plug-in connector base arranged adjacent to a circuit board surface. The circuit board rests on heat-conductive support surfaces formed inside on the package, and the device has a wedge whose bottom wedge side surface rests against the circuit board surface and whose opposite side engages with a bearing surface on the package in order to press the circuit board against the support surfaces.