Semiconductor unit

A semiconductor unit, comprising:

• one or more capacitors each having a first capacitor terminal and a second capacitor terminal;
• a plurality of semiconductor modules each having a positive terminal, a negative terminal, and a first output terminal;
• a laminated wiring having a first conductor which connects the first capacitor terminal of each of the one or more capacitors to the plurality of positive terminals, a second conductor which connects the second capacitor terminal of each of the one or more capacitors to the plurality of negative terminals, and an insulator which is disposed between the first conductor and the second conductor and insulates the first conductor and the second conductor from each other, the laminated wiring having a plurality of slits in one of the first conductor and the second conductor so that a variation in a total of first and second inductance values among the plurality of semiconductor modules is smaller than or equal to 10 nH, the first inductance values being respective inductance values between each first capacitor terminal of the one or more capacitors and one positive terminal that is closest to said each first capacitor terminal, the second inductance values being respective inductance values between each one of the plurality of negative terminals and one second capacitor terminal that is closest to said each one of the plurality of negative terminals;
• and
• an output wiring having a plurality of connecting portions respectively connected to a respective one of the first output terminals of the plurality of semiconductor modules, a second output terminal and an intermediate portion electrically connecting the plurality of connecting portions to the second output terminal.