Patent ID: 6015982
Filing Date: 2000-01-18
Classification: H01L

Abstract:
A semiconductor device in an active layer with a high breakthrough voltage, said device having at least one depletion region with reduced field strength and comprising:a component region of semiconductor material with an upper surface in the active layer, said component region having a relatively low concentration of dopant of a first type,an electrically delimiting separation layer extending around the component regions towards the surrounding active layer,in the component region recessed transistor regions for at least one semiconductor component,at least three electrical connections in the component region,wherein the device comprises at least two separated, in the component region recessed based regions with a relatively low concentration of dopant of a second type opposite to the first type of dopant, wherein the recessed base regions extend from said upper surface of the component region,wherein the device comprises a PN-junction at each surface delimiting the recessed base regions from a remaining part of the component region,wherein the device comprises at least one drain connection placed in said remaining part of the component region with a high concentration of dopant of the first type, said drain connection being connection with a first one of the electrical connections,wherein each base region surrounds an emitter region which is heavily doped with the first type of dopant and which is connected to a second one of the electrical connections, andwherein at least one base connection region is arranged in each base region, said base connection region being heavily doped with the second type of dopant and which is connected to a third one of the electrical connections,wherein at least one common collector region extends between the PN-junctions of two adjacent base regions at the upper surface of the component region, said collector region at a predetermined difference in potential between the drain connection and the base connections being completely depleted at least in a lateral extension.