Patent ID: 8564996

Claim:
A semiconductor module comprising: a plurality of switching elements that forms an inverter converting a direct current to an alternating current, the plurality of switching elements including a high-potential side switching element and a low-potential side switching element, the high-potential side switching element coupled to a higher potential side than the low-potential side switching element; a high-potential side conductor on which the high-potential side switching element is mounted, the high-potential side conductor extending in a first direction and including a high-potential side terminal coupled with a high potential source, the high-potential side conductor coupled with a drain or a drain equivalent electrode of the high-potential side switching element; a load side conductor on which the low-potential side switching element is mounted, the load side conductor including a load side terminal coupled with a load, the load side conductor coupled with a drain or a drain equivalent electrode of the low-potential side switching element; a low-potential side conductor extending in the first direction and including a low-potential side terminal coupled with a low potential source; a first connection conductor coupling a source or a source equivalent electrode of the high-potential side switching element and the load side conductor; a second connection conductor coupling a source or a source equivalent electrode of the low-potential side switching element and the low-potential side conductor; a molded member integrally covering the high-potential side switching element, the low-potential side switching element, the high-potential side conductor, the load side conductor, the low-potential side conductor, the first connection conductor, and the second connection conductor, wherein the high-potential side conductor further includes a wide section on which the high-potential side switching element is mounted and a narrow section extending from the wide section to the high-potential side terminal in the first direction, wherein the wide section is wider than the narrow section in a second direction perpendicular to the first direction, wherein the wide section has a first side and a second side opposite to the first side in the second direction, wherein a distance between the first side of the wide section and the low-potential side conductor is shorter than a distance between the second side of the wide section and the low-potential side conductor, and wherein the narrow section extends from a portion of the wide section closer to the first side than the second side.