Heat conducting connecting piece has protrusions on surfaces of parts butting onto insulating film corresponding to apertures of other part

摘要

The device has at least two parts (2,3) butted together and electrically isolated from each other by an insulating film (4). The surfaces of the parts butting onto the insulating film have protrusions (5) corresponding to apertures of the other part and the parts engage each other using these. The protrusions have reverse cuts and the parts are arranged in a layer of a multilayer circuit board.