Patent ID: 7298008

Claim:
A silicon control rectifier, comprising: a silicon layer in direct physical contact with a buried oxide layer of a silicon-on-insulator substrate, a top surface of said silicon layer defining a horizontal plane; a first doped region in said silicon layer, said first doped region having a first net peak doping concentration, a second doped region having a second net peak doping concentration and a third doped region having a third net peak doping concentration, said second and third net peak doping concentrations being a same doping concentration, said first doped region between and abutting said second and third doped regions, said second and third doped regions not abutting; a fourth doped region in said silicon layer, said fourth doped region having a fourth net peak doping concentration, said fourth doped region abutting only said second doped region; a fifth doped region in said silicon layer, said fifth doped region having a fifth net peak doping concentration, said fifth doped region abutting only said third doped region; wherein a path of current flow from said fourth doped region, through said second doped region, said first doped region and said third doped region to said fifth doped region, is in a single horizontal direction parallel to said horizontal plane; and wherein said first and fifth doped regions are doped N-type and said second, third and fourth doped regions are doped P-type.