Abstract: A semiconductor device includes: a semiconductor chip having a first surface, a second surface, a first electrode provided on the first surface, a second electrode provided on the second surface, and a third electrode provided on the second surface; a first conductor including a fourth conductor and a fifth conductor; a conductive first connector provided between the first conductor and the first electrode; a second conductor including a sixth conductor and a seventh conductor; a conductive second connector provided between the second electrode and the sixth conductor; a third conductor including an eighth conductor, an intermediate conductor, and a ninth conductor, the intermediate conductor being provided between the eighth conductor and the ninth conductor, the eighth conductor being provided between the semiconductor chip and the intermediate conductor, and the intermediate conductor having a through hole; and a conductive third connector.

Abstract: A semiconductor device according to an embodiment includes a base frame, a semiconductor element provided on the base frame, a connector provided on the semiconductor element, the connector having an upper surface, a side surface, and a porous body having a plurality of pores provided on at least the side surface, and a molded resin provided in a periphery of the semiconductor element and at least the side surface of the connector. The upper surface of the connector is exposed.

Abstract: According to one embodiment, a semiconductor device includes a package substrate including a package member and a first conductive portion; a semiconductor package provided on a first surface of the package substrate inside the package member and coupled to the first conductive portion; a first semiconductor chip provided on the first surface of the package substrate inside the package member and including a first terminal; a second semiconductor chip provided on the first surface of the package substrate inside the package member and including a second terminal; and a connection component that couples the first and second terminals to the first conductive portion inside the package member.

Abstract: According to one embodiment, there is provided a cleaning agent. The cleaning agent includes an azole-based compound having a group including at least one selected from the group consisting of a glycidyl group, a hydrolyzable silyl group, and an amino group.

Abstract: An optical coupling device includes a leadframe, a light-emitter, a light-receiver, and first to fourth resins. The light-emitter is located on the leadframe. The first resin is located on the leadframe. The first resin includes first and second portions. The first portion surrounds the light-emitter. The second portion is positioned between the first portion and the light-emitter. A first thickness of the first portion is greater than a second thickness of the second portion. The second resin is located between the light-emitter and the light-receiver in the first direction and is light-transmissive. The third resin is located between the second resin and the light-receiver and is light-transmissive. The fourth resin houses the light-emitter, the light-receiver, and the first to third resins and is light-shielding.

Abstract: A semiconductor device according to an embodiment includes a base frame, a semiconductor element provided on the base frame, a connector provided on the semiconductor element, the connector having an upper surface, a side surface, and a porous body having a plurality of pores provided on at least the side surface, and a molded resin provided in a periphery of the semiconductor element and at least the side surface of the connector. The upper surface of the connector is exposed.