Method for determining the emitter and base series resistances of bipolar transistors

Authors:
  • DTD.D. Tang
    D.D. Tang
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Abstract
A simple method for determining both the emitter and the base series resistances of bipolar transistors from the measured I - V characteristics is described. The method is based on the observation that deviation of the base current from the ideal\exp (qV_{BE}/kT)behavior at high currents can be attributed solely and relatively simply to series resistances. Series resistances determined by this method are given for sample high-speed digital bipolar transistors.