These electrons will attempt to recombine with the majority base holes, however, because the base is physically thin and lightly doped, only a small percentage of the injected electrons will recombine with base holes and exit the base terminal back to ground. You can use the CTRL + F shortcut to search for a certain SMD transistor code because it will be. As long as there is sufficient potential from the emitter supply, the electrons will be pushed into the base. Download Our Free SMD Code Book With Marking Codes. The base-emitter depletion creates an energy hill just as it did with a single PN junction.
From the left side of the diagram, electrons exit the emitter supply and enter the N emitter. \): Forward-reverse bias, electron flow.Įlectron flow will facilitate this explanation so we'll draw the current directions using dashed lines.
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