Fairchild Semiconductor Corporation

Koehler-bright Star, Inc.

Robert Baran

Joseph Andrew Yedinak

Douglas Joseph Lange

Jack Edward Wojslawowicz

Bernard J Czeck

Mark Dirsa

John Devaney

Joseph Bobbin

Dwayne S Reichl

Jeff Keisling

A multiple electronic tag holder includes a housing adapted to hold a plurality of electronic tags. Circuitry adapted to electrically engage a battery and the plurality of electronic tags, so that the plurality of electronic tags are powered by the battery, is positioned within the housing. A printed circuit board may optionally be provided and positioned within the housing to power the electronic tags and provide the multiple electronic tag holder with additional functionality.

Multiple electronic tag holder

An IGBT has striped cell with source stripes continuous or segmented along the length of the base stripe The opposite stripes are periodically connected together by the N&plus; contact regions to provide channel resistance along the width of the source stripes . For continuous stripes the resistance between two sequential contact areas is greatest in the middle and current concentrates near the source contact regions The wider the spacing between the contacts the larger the resistive drop to the midpoint between two N&plus; contacts

IGBT with channel resistors

An IGBT has a thick buffer region with increased doping to improve self-clamped inductive switching and device manufacture. A planar or trench gate IGBT has a buffer layer more than 25 microns thick. The buffer layer is doped high enough so that its carriers are more numerous than minority carriers, particularly at the transition between the N buffer & N drift region.

Thick buffer region design to improve IGBT self-clamped inductive switching (SCIS) energy density and device manufacturability

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Plains, PA, United States of America

Robert Baran