Patent ID: 6593628
Filing Date: 2003-07-15
Classification: H01L

Abstract:
A semiconductor device comprising a semiconductor body (10) having a first transistor (T1) provided with a first region (1) forming a collector region (1) or a drain region of the transistor (T1), and a second transistor (T2) provided with a second region (2) forming a collector region or a drain region of the second transistor (T2), which transistors (T1, T2) are in a cascode configuration, the collector region (1) or the drain region of the first transistor (T1) being connected to an emitter region (4) or a source region of the second transistor (T2), characterized in that the first region (1) and the second region (2) are situated next to each other in a semiconductor region (5), a subjacent part (5A) of the semiconductor region is provided with a higher doping concentration at the location of the first region (1) than at the second region, further characterized in that the semiconductor body (10) comprises a semiconductor substrate (11) on which an epitaxial layer (5) is provided, which includes the semiconductor region (5).