Patent ID: 8902589

Claim:
A semiconductor module in which a refrigerant is supplied from an outside to a water jacket configuring a cooler, to cool a semiconductor element disposed on an outer surface of the cooler, the semiconductor module comprising: a heat sink connected thermally to the semiconductor element; a first passage in the water jacket, which extends from a refrigerant introduction port; a guide part formed along the first passage, including a first surface and a second surface to guide the refrigerant toward one side surface of the heat sink, the first surface being inclined to said one side surface of the heat sink; a second passage in the water jacket to be parallel to the first passage, which extends to a refrigerant discharge port, the second passage having a side wall parallel to another side surface of the heat sink; and a third passage that is formed in the water jacket in a position for communicating the first passage and the second passage with each other, the heat sink being disposed in the third passage.