Patent ID: 6919590

Claim:
A semiconductor component comprising: a semiconductor substrate; an epitaxial semiconductor layer above the semiconductor substrate; a bipolar transistor in the epitaxial semiconductor layer; and a field effect transistor in the epitaxial semiconductor layer, wherein: a turn-on voltage of the field effect transistor is less than an emitter-base turn-on voltage of the bipolar transistor; a pinch-off voltage of the field effect transistor is greater than zero; the semiconductor substrate has a surface; a direction substantially parallel to the surface of the semiconductor substrate is a horizontal direction; a first portion of the epitaxial semiconductor layer forms a base of the bipolar transistor and a non-metal gate of the field effect transistor; the non-metal gate is the only gate of the field effect transistor; and the first portion of the epitaxial semiconductor layer has a substantially uniform doping concentration in the horizontal direction.