Semiconductor device having a substrate and input and output electrode units

A semiconductor device comprising:

• a substrate provided with a main circuit including a plurality of arm elements, each of the plurality of arm elements including a plurality of semiconductor elements connected in parallel;
• a plurality of input electrode units provided on the substrate and configured to supply power to the main circuit;
• a plurality of output electrode units provided on the substrate and being connected to a midpoint between the two arm elements connected in series;
• and
• a plurality of input electrodes mounted on the corresponding input electrode units, wherein
• the plurality of arm elements is arrayed along a first direction of the substrate,
• each of the arm elements is configured with the plurality of semiconductor elements arrayed along a second direction of the substrate perpendicular to the first direction and the plurality of semiconductor elements is separated into a first element group and a second element group,
• the substrate includes a first region where the semiconductor element included in the first element group is arranged and a second region where the semiconductor element included in the second element group is arranged, the first region and the second region being separated along the second direction,
• the input electrode units and the output electrode units are alternately arranged along the first direction in a third region provided between the first region and the second region on the substrate,
• each of the input electrodes has a shape of which a width in the first direction is wider than a width in the second direction,
• at least a portion of each input electrode unit is located between two semiconductor elements that are included in the plurality of semiconductor elements constituting one of the arm elements and are arrayed along the first direction in the third region and in between the two semiconductor elements in the second direction, and
• at least a portion of each output electrode unit is located between two semiconductor elements that are included in the plurality of semiconductor elements constituting another one of the arm elements adjoining the one of the arm elements and are arrayed along the first direction in the third region and in between the two semiconductor elements constituting another one of the arm elements in the second direction.