A semiconductor apparatus includes a metal body in which a through hole is formed, a socket that covers the metal body without closing the through hole, a connection terminal connected to the metal body and exposed to an outside of the socket, a control board having a metal pattern and a circuit pattern, and a semiconductor chip having a control terminal connected to the circuit pattern via the through hole without being in contact with the metal body, the connection terminal being connected to the metal pattern.

A circuit module includes a circuit board including an insulating layer, first and second signal conductors, a ground conductor, and a ground conductor layer; and an electronic component including first and second signal terminals and a first ground terminal. The ground conductor includes a first strip portion parallel to the first and second signal conductors. When a portion of the first signal conductor parallel to the second signal conductor and the first signal terminal are set as a first signal wiring line and a portion of the second signal conductor parallel to the first signal conductor and the second signal terminal are set as a second signal wiring line, the circuit board includes a first strip portion connection via conductor that connects the first strip portion and the ground conductor layer in a region where the first and second signal wiring lines are parallel to each other.

A semiconductor apparatus includes a metal body in which a through hole is formed, a socket that covers the metal body without closing the through hole, a connection terminal connected to the metal body and exposed to an outside of the socket, a control board having a metal pattern and a circuit pattern, and a semiconductor chip having a control terminal connected to the circuit pattern via the through hole without being in contact with the metal body, the connection terminal being connected to the metal pattern.

A circuit module includes a circuit board including an insulating layer, first and second signal conductors, a ground conductor, and a ground conductor layer; and an electronic component including first and second signal terminals and a first ground terminal. The ground conductor includes a first strip portion parallel to the first and second signal conductors. When a portion of the first signal conductor parallel to the second signal conductor and the first signal terminal are set as a first signal wiring line and a portion of the second signal conductor parallel to the first signal conductor and the second signal terminal are set as a second signal wiring line, the circuit board includes a first strip portion connection via conductor that connects the first strip portion and the ground conductor layer in a region where the first and second signal wiring lines are parallel to each other.