Unlock the performance of your MOSFET designs using our accurate MOSFET Threshold Voltage Calculator. This essential tool helps electrical engineers and students quickly determine the threshold voltage (Vt), the critical gate-source voltage required to turn on the transistor. Understand how parameters like flat-band voltage, surface potential, substrate doping, and gate oxide capacitance influence Vt.
Formula:
Vt = Vfb + 2Φf + (√(2 * q * εSi * NA * 2Φf)) / Cox
Where:
- Vt = Threshold Voltage (Volts)
- Vfb = Flat-band Voltage (Volts)
- 2Φf = Threshold Surface Potential (Volts)
- q = Elementary Charge (1.602 x 10-19 C)
- εSi = Permittivity of Silicon (1.0359 x 10-12 F/cm)
- NA = Substrate Doping Concentration (cm-3)
- Cox = Gate Oxide Capacitance per unit area (F/cm2)