Patent ID: 8581365
Filing Date: 2013-11-12
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a first bipolar junction transistor (BJT) device integrated into a semiconductor substrate, wherein the first BJT device comprises a collector, a first base, and an emitter, and wherein the collector is of a first doping type, the first base is of a second doping type, the emitter is of the first doping type; a second BJT device integrated into the semiconductor substrate; wherein the base depth has a positive relationship with the lateral span width of the base; the first base having a first lateral span width and a first depth; the second BJT device comprises a second base having a second lateral span width and a second depth; the first lateral span width is larger than the second lateral span width, and the first depth is larger than the second depth; and wherein the first BJT device has a first gain and the second BJT device has a second gain, and wherein the first gain is smaller than the second gain.