Patent ID: 8076755

Claim:
A reverse-mounted semiconductor device comprising: a semiconductor substrate; a three-terminal semiconductor element including a BIP transistor formed on the semiconductor substrate; three pad electrodes provided respectively in different regions around the semiconductor element, each of the three pad electrodes connected through wiring to one of the three electrodes of the semiconductor chip, respectively; through regions opened on a back surface of the semiconductor substrate, and exposing the three pad electrodes, respectively; and three backside pad electrodes provided on the back surface of the semiconductor substrate, and connected respectively with the three pad electrodes being in contact with feedthrough electrodes extending respectively to the three through regions, the backside pad electrodes comprising a backside base electrode, a backside collector electrode, and a backside emitter electrode, wherein the backside emitter electrode is in direct contact with the back surface of the semiconductor substrate, and each of the backside base electrode and backside collector electrode is insulated from the back surface of the semiconductor substrate.