Power semiconductor device

摘要

The present invention comprises a power semiconductor device in which a bipolar transistor and a diode are formed in antiparallel in a semiconductor chip with an emitter electrode (21) on one surface of the transistor (16) serving also as an anode electrode of the diode and a collector electrode (23) on another surface of the transistor serving also as a cathode electrode of the diode. A plurality of emitter lead wires (24) of the power transistor serving also as anode lead wires of the diode are connected in the anode region of the diode. Thus, electric current is made to flow from the anode region of the diode to the cathode thereof if a short circuit occurs, so that the lead wires can be prevented from being melted by large current.