Patent ID: 8854820

Claim:
A power module, comprising: a power module pre-product having a multilayer substrate body comprising: a heat plate, one surface side of which is joined to one surface of an insulating substrate; a power module substrate which is joined to the other surface of the insulating substrate and formed with a circuit pattern; a power semiconductor element disposed on the circuit pattern of the power module substrate; and a pair of external connecting terminals, arranged in a standing state in an orthogonal direction to a surface of the power module substrate, and electrically connected to the power semiconductor element; and a molding resin layer which seals the power module pre-product in a state where externally exposed end portions on one end sides of the pair of the external connecting terminals and the other surface side of the heat plate are each exposed to the outside, wherein an aligning hole is formed in a cylindrical body formed in a protruding manner on the surface of the power module substrate constituting the multilayer substrate body.