| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pressure-welding GTO thyristor capable of suppressing element breakage caused by a turn-off operation failure, by performing uniform turn-off operation. <P>SOLUTION: The pressure-welding GTO thyristor includes: a semiconductor base body 12; an element pattern disposed on the semiconductor base body 12 in a ring shape in a plan view, so as to form a cathode electrode 18; a gate electrode 38 pressure-welded on the semiconductor base body 12 in the vicinity of a center of the ring-shape; and a gate lead 44 connected to a side face in a prescribed direction of the gate electrode 38. A first plane center A, which is the center position of the ring shape, is placed with deviation in a prescribed direction from a second plane center B which is a center position of the gate electrode 38 in a plan view. <P>COPYRIGHT: (C)2012,JPO&INPIT |
