Patent ID: 7768109

Claim:
A semiconductor device, comprising: a metallic base substrate; a wiring board arranged on the metallic base substrate; a semiconductor element arranged on the wiring board; externally leading terminals each having a first end arranged on the wiring board and electrically connected to the semiconductor element as a distal end, a second end arranged outside of the wiring board, and a main body portion which connects the first end and the second end; a housing including a through portion, through which the main body portion of the externally leading terminal is inserted, and is disposed on the metallic base substrate to cover the first end of the externally leading terminal and the semiconductor element, the through portion having a tubular protruded portion being open downwardly and a through hole, the inner diameter of the tubular protruded portion being larger than the diameter of the through hole; a fixing resin provided to fix the main body portion of the externally leading terminal to the through portion of the housing, the fixing resin being disposed within the tubular protruded portion and the hole; and a gel-like resin layer formed within the housing to cover the first end of the externally leading terminal and the semiconductor element and to have a space between the gel-like resin layer and the housing.