Keywords: Npn bjt cross section.svg planar npn Bipolar junction transistor showing the emitter base and collector contacts and the respective regions with the silicon doping type Replacement SVG version of File Npn BJT cross section PNG own Matthewbeckler 2010-05-19 Check categories 2010 May 20 en wikipedia Bipolar_junction_transistor en wikipedia Diffusion_transistor 1 BJT schemas |