Patent ID: 6657239
Filing Date: 2003-12-02
Classification: H01L

Abstract:
A power switching semiconductor device, comprising:a first main electrode which is divided into a plurality of segments to form segment rows of a multiconcentric circle; a control electrode surrounding the plurality of segments and formed on a front major surface of a semiconductor substrate; and a second main electrode formed on a rear major surface of the semiconductor substrate, wherein a turn-on operation is performed between the first main electrode and the second main electrode with a control signal inputted from the control electrode, wherein dimensions of the power switching semiconductor device satisfy the following relationships: 00.5&lE;&agr;&lE;1.5 (Dâˆ’C)/2&lE;&bgr;Ã—A 0.5&lE;&bgr;&lE;1.5 where A is a width of each segment of the plurality of segments that form said segment rows in a circumferential direction, B is a distance between adjacent segments in a circumferential direction arrangement, C is an outer diameter of an inner segment row, and D is an inner diameter of an outer segment row,wherein the distance B between adjacent segments is the same for one segment row as compared to another segment row and a distance between adjacent inside edges of the plurality of segments is the same for one segment row as compared to another segment row, and wherein the width A is the same for one segment row as compared to another segment row.