Patent ID: 6437419
Filing Date: 2002-08-20
Classification: H01L

Abstract:
A semiconductor device with an integral source/emitter ballast resistor comprising:a semiconductor substrate; A P-well region in the substrate having a P-type polarity; a single gate with a plurality of partial first and second gate structures spaced apart from each other on the surface of the substrate, each partial gate structure having a gate sidewall spacer insulator along the opposite edges of the gate structures and said partial gate structures extending along opposite lengths of the P-well and covering opposite portions of said P-well; a source or emitter region in the P-well region and having a pair of resistor regions of lightly doped N-type dopants, each resistor region extending along the length of the P-well and beneath the gate sidewall spacer insulator; and highly doped N-type contact regions in the substrate extending in a direction transverse to the edges of the partial gate structures for providing ohmic metal contact to the resistor regions.