Patent ID: 9129838
Filing Date: 2015-09-08
Classification: H01L

Abstract:
1. A semiconductor device comprising: a first switching active element which is of a normally-on type; a second switching active element which is of a normally-off type; and an electrically conductive substrate, the first switching active element and the second switching active element being mounted on the electrically conductive substrate so as to be cascode-connected to each other, the first switching active element and the second switching active element being sealed, the first switching active element having at least one first source electrode pad, a first drain electrode pad, and a first control electrode which are provided on a front surface of the first switching active element, the second switching active element having (i) a second drain electrode pad and a second control electrode which are provided on a front surface of the second switching active element and (ii) a second source electrode pad provided on a back surface of the second switching active element, the back surface being a contact surface in contact with the electrically conductive substrate, the first control electrode being connected to the electrically conductive substrate via a first electrically conductive wire, and the first source electrode pad and the second drain electrode pad being (I) provided at a minimum distance from each other, inherently constrained by manufacturing equipment and (II) connected to each other via a second electrically conductive wire, and a loop-like electric current path, which forms an RLC resonant circuit passing through the first source electrode pad, the second electrically conductive wire, the second drain electrode pad, the second source electrode pad, the electrically conductive substrate, the first electrically conductive wire, and the first control electrode, and has an attenuation coefficient of 1 or more.