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SimElectronics

NPN Bipolar Transistor Characteristics

This example shows generation of the Ic versus Vce curve for an NPN bipolar transistor. Define the vector of base currents and minimum and maximum collector-emitter voltages by double clicking on the block labeled 'Define Ib and Vce'. Then double click on the block labeled 'Generate Characteristics'.

This type of plot can be compared against a manufacturer datasheet to confirm a correct implementation of the transistor parameters. You can also use this model to examine the transistor characteristics in the reverse region by specifying a range of negative Vce values. In this region, the gain is defined by the Reverse current transfer ratio BR parameter. Increase this parameter above one to produce a reverse current gain.

To explore the properties of a PNP bipolar transistor, open model elec_bipolar_pnp.