Abstract: A semiconductor module includes a mounting substrate, a transistor mounted on the mounting substrate, a housing configured to house a semiconductor element, a first sealing layer filled in a space inside the housing to seal the transistor, a second sealing layer of a resin material softer than the first sealing layer and layered on the first sealing layer, and a wire electrically connected to the transistor, in which the wire includes a first portion covered with the first sealing layer and a second portion covered with the second sealing layer.

Abstract: A drive apparatus that drives a control terminal of a main switching element establishing/cutting off an electrical connection between a first main terminal and a second main terminal is provided, including first to fourth switching elements establishing/cutting off electrical connections between a positive terminal of a power source and the control terminal, the positive terminal and the second main terminal, the control terminal and a negative terminal of the power source, and the second main terminal and the negative terminal, respectively, and a resistance of at least one among a path between the control terminal and the second main terminal via the first to second switching elements, a path via the first and fourth switching elements, a path via the second to third switching elements, and a path via the third to fourth switching element is different from a resistance of at least one of the others.

Abstract: A drive apparatus that drives a control terminal of a main switching element establishing/cutting off an electrical connection between a first main terminal and a second main terminal is provided, including first to fourth switching elements establishing/cutting off electrical connections between a positive terminal of a power source and the control terminal, the positive terminal and the second main terminal, the control terminal and a negative terminal of the power source, and the second main terminal and the negative terminal, respectively, and a resistance of at least one among a path between the control terminal and the second main terminal via the first to second switching elements, a path via the first and fourth switching elements, a path via the second to third switching elements, and a path via the third to fourth switching element is different from a resistance of at least one of the others.