NOVELTY - The semiconductor device (40) has a positive side insulated gate bipolar transistor (IGBT) module (50) connected between a positive electrode (41) and an output electrode (43), and a negative side IGBT module (60) connected between a negative electrode (42) and the output electrode. The output electrode is arranged between the positive electrode and negative electrode. The electrode thickness of the positive electrode and negative electrode is set thinner than the electrode thickness of the output electrode.    USE - Semiconductor device used for electronic apparatus e.g. motor control apparatus for electric vehicle. Can also be used in e.g. hybrid vehicle, fuel cell electric vehicle.    ADVANTAGE - Ensures easy change on the positive electrode and negative electrode according to deformation of output electrode when output electrode thermally expands in electrode thickness direction or electrode plane direction. Suppresses stress in the IGBTs and diodes on the positive and negative sides since the positive and negative electrodes are tracked and elastically deform with respect to the thermal expansion of the output electrode, thus suppressing deterioration of the IGBTs and diodes on the positive and negative sides.    DETAILED DESCRIPTION - The positive side IGBT module has a positive side IGBT (51) connected to the positive electrode and output electrode. The negative side IGBT module has a negative side IGBT (61) connected between the negative electrode and output electrode. A positive side diode (52) sends electric current in reverse direction to the positive side IGBT. A negative side diode (62) sends electric current in reverse direction to the negative side IGBT.    DESCRIPTION OF DRAWING(S) - The drawing shows the perspective view and longitudinal cross-sectional view of the semiconductor device.    Semiconductor device (40)    Positive electrode (41)    Negative electrode (42)    Output electrode (43)    Positive side IGBT module (50)    Positive side IGBT (51)    Positive side diode (52)    Negative side IGBT module (60)    Negative side IGBT (61)    Negative side diode (62)