Abstract: A semiconductor module includes a printed circuit board and an internal terminal unit. The internal terminal unit includes an internal terminal group including a plurality of internal terminals that are aligned in a predetermined direction and each have a first width in the predetermined direction, and an extended internal terminal that has a step portion formed by a first portion having the first width and a second portion having a second width greater than the first width in the predetermined direction and that supports the printed circuit board by the second portion. The extended internal terminal is located at a first end of the internal terminal unit that is opposite to a second end of the internal terminal unit in the predetermined direction. The second portion extends from the first portion in the predetermined direction from the second end toward the first end of internal unit.