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| RE || emitter resistance || 0.37<math>\Omega</math> || 1<math>\Omega</math>
| RE || emitter resistance || 0.37<math>\Omega</math> || 1<math>\Omega</math>
|}
|}
=== Derived parameters ===
The following parameters relate to the transistor constants. They are also constants, but are derived from the more fundamental constants given above.
* <math>V_0 = NF \!\cdot\! Vt</math>
* <math>IBF = IS \!\cdot\! \exp \left( \frac{U}{V_0} \right)</math>
* <math>IBL = ISE \!\cdot\! \exp \left( \frac{U}{NE\!\cdot\! VT} \right)</math>
* <math>IB = IBF + IBL</math>
* <math>IC = BF \!\cdot\! IBF</math>
* <math>\beta = \frac{IC}{IB}</math>
* <math>Q = \frac{IBF}{V_0}</math>
* <math>Z = 1 + Q \!\cdot\! \left( RB + RE \!\cdot\! BF \right)</math>
== Equations ==
== Equations ==