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## Credits

Birsa Institute of Technology (BIT), Sindri
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## Cut-off frequency of varactor diode Solution

STEP 0: Pre-Calculation Summary
Formula Used
cut_off_frequency = 1/(2*pi*Series field resistance*Capacitance of varactor Diode)
F = 1/(2*pi*Rse*CT)
This formula uses 1 Constants, 2 Variables
Constants Used
pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288
Variables Used
Series field resistance - Series field resistance is resistance just like the filed resistance but it is connected to a series field. (Measured in Ohm)
Capacitance of varactor Diode - The capacitance of Varactor Diode is the ability of a component or circuit to collect and store energy in the form of an electrical charge (Measured in Farad)
STEP 1: Convert Input(s) to Base Unit
Series field resistance: 10 Ohm --> 10 Ohm No Conversion Required
Capacitance of varactor Diode: 10 Farad --> 10 Farad No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
F = 1/(2*pi*Rse*CT) --> 1/(2*pi*10*10)
Evaluating ... ...
F = 0.00159154943091895
STEP 3: Convert Result to Output's Unit
0.00159154943091895 Hertz --> No Conversion Required
FINAL ANSWER
0.00159154943091895 Hertz <-- Cut-off frequency
(Calculation completed in 00.000 seconds)

## < 10+ Basic Electronics Calculators

Conductivity in semiconductors in terms of mobility of electrons and holes
conductivity = Concentration of electrons in the conduction band*[Charge-e]*Mobility of holes+Majority carrier electron concentration*[Charge-e]*Mobility of electron Go
Intrinsic concentration
intrinsic_carrier_concentration = sqrt(Coefficient related to specific semiconductor*(Temperature)^3*e^-(Semiconductor bandgap energy/(2*[BoltZ]*Temperature))) Go
Conductivity of extrinsic semiconductor for p-type
conductivity_of_extrinsic_semiconductors_n_type = Acceptor concentration*[Charge-e]*Mobility of electron Go
Conductivity of extrinsic semiconductors for n-type
conductivity_of_extrinsic_semiconductors_p_type = Donor concentration*[Charge-e]*Mobility of holes Go
Majority carrier concentration in a Semiconductor
majority_carrier_electron_concentration = (Intrinsic carrier concentration)^2/Minority carrier concentration Go
Electron diffusion length in terms of relaxation time
electron_diffusion_length = sqrt(Electron Diffusion Constant*Relaxation time) Go
Conductivity in metals in terms of number of electrons
conductivity = Number of Electrons*Mobility of electron*[Charge-e] Go
Einstein's Equation
voltage_equivalent_of_temperature = Electron Diffusion Constant/Mobility of electron Go
Mobility of a charge carriers
mobility_of_charge_carriers = Drift Velocity/Electric field intensity Go
Thermal Voltage or voltage equivalent of temperature
thermal_voltage = Temperature/11600 Go

### Cut-off frequency of varactor diode Formula

cut_off_frequency = 1/(2*pi*Series field resistance*Capacitance of varactor Diode)
F = 1/(2*pi*Rse*CT)

## What is a varactor diode?

The diode whose internal capacitance varies with the variation of the reverse voltage type of diode is known as the Varactor diode. It is used for storing the charge. The varactor diode always works in reverse bias, and it is a voltage-dependent semiconductor device.

## How to Calculate Cut-off frequency of varactor diode?

Cut-off frequency of varactor diode calculator uses cut_off_frequency = 1/(2*pi*Series field resistance*Capacitance of varactor Diode) to calculate the Cut-off frequency, The Cut-off frequency of varactor diode is a boundary in a system's frequency response at which energy flowing through the system begins to be reduced rather than passing through. Cut-off frequency and is denoted by F symbol.

How to calculate Cut-off frequency of varactor diode using this online calculator? To use this online calculator for Cut-off frequency of varactor diode, enter Series field resistance (Rse) and Capacitance of varactor Diode (CT) and hit the calculate button. Here is how the Cut-off frequency of varactor diode calculation can be explained with given input values -> 0.001592 = 1/(2*pi*10*10).

### FAQ

What is Cut-off frequency of varactor diode?
The Cut-off frequency of varactor diode is a boundary in a system's frequency response at which energy flowing through the system begins to be reduced rather than passing through and is represented as F = 1/(2*pi*Rse*CT) or cut_off_frequency = 1/(2*pi*Series field resistance*Capacitance of varactor Diode). Series field resistance is resistance just like the filed resistance but it is connected to a series field and The capacitance of Varactor Diode is the ability of a component or circuit to collect and store energy in the form of an electrical charge.
How to calculate Cut-off frequency of varactor diode?
The Cut-off frequency of varactor diode is a boundary in a system's frequency response at which energy flowing through the system begins to be reduced rather than passing through is calculated using cut_off_frequency = 1/(2*pi*Series field resistance*Capacitance of varactor Diode). To calculate Cut-off frequency of varactor diode, you need Series field resistance (Rse) and Capacitance of varactor Diode (CT). With our tool, you need to enter the respective value for Series field resistance and Capacitance of varactor Diode and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Cut-off frequency?
In this formula, Cut-off frequency uses Series field resistance and Capacitance of varactor Diode. We can use 10 other way(s) to calculate the same, which is/are as follows -
• thermal_voltage = Temperature/11600
• mobility_of_charge_carriers = Drift Velocity/Electric field intensity
• majority_carrier_electron_concentration = (Intrinsic carrier concentration)^2/Minority carrier concentration
• intrinsic_carrier_concentration = sqrt(Coefficient related to specific semiconductor*(Temperature)^3*e^-(Semiconductor bandgap energy/(2*[BoltZ]*Temperature)))
• voltage_equivalent_of_temperature = Electron Diffusion Constant/Mobility of electron
• electron_diffusion_length = sqrt(Electron Diffusion Constant*Relaxation time)
• conductivity = Number of Electrons*Mobility of electron*[Charge-e]
• conductivity = Concentration of electrons in the conduction band*[Charge-e]*Mobility of holes+Majority carrier electron concentration*[Charge-e]*Mobility of electron
• conductivity_of_extrinsic_semiconductors_p_type = Donor concentration*[Charge-e]*Mobility of holes
• conductivity_of_extrinsic_semiconductors_n_type = Acceptor concentration*[Charge-e]*Mobility of electron
Where is the Cut-off frequency of varactor diode calculator used?
Among many, Cut-off frequency of varactor diode calculator is widely used in real life applications like {FormulaUses}. Here are few more real life examples -
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