Capacitance of Varactor Diode Solution

STEP 0: Pre-Calculation Summary
Formula Used
Capacitance of Varactor Diode = Material Constant/((Barrier Potential+Reverse Voltage)^Doping Constant)
Cj = k/((Vb+VR)^n)
This formula uses 5 Variables
Variables Used
Capacitance of Varactor Diode - (Measured in Farad) - 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.
Material Constant - Material Constant is the constant value for the material used in a particular formula.
Barrier Potential - (Measured in Volt) - Barrier Potential refers to the potential required to overcome the barrier.
Reverse Voltage - (Measured in Volt) - Reverse Voltage refers to the voltage that is applied in the reverse bias direction across the diode.
Doping Constant - Doping Constant is defined as a constant which discusses the doping level of the material.
STEP 1: Convert Input(s) to Base Unit
Material Constant: 0.005 --> No Conversion Required
Barrier Potential: 0.85 Volt --> 0.85 Volt No Conversion Required
Reverse Voltage: 9 Volt --> 9 Volt No Conversion Required
Doping Constant: 0.52 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Cj = k/((Vb+VR)^n) --> 0.005/((0.85+9)^0.52)
Evaluating ... ...
Cj = 0.00152188965336729
STEP 3: Convert Result to Output's Unit
0.00152188965336729 Farad -->1521.88965336729 Microfarad (Check conversion here)
FINAL ANSWER
1521.88965336729 1521.89 Microfarad <-- Capacitance of Varactor Diode
(Calculation completed in 00.004 seconds)

Credits

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Birsa Institute of Technology (BIT), Sindri
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16 Diode Characteristics Calculators

Non-Ideal Diode Equation
Go Non Ideal Diode Current = Reverse Saturation Current*(e^(([Charge-e]*Diode Voltage)/(Ideality Factor*[BoltZ]*Temperature))-1)
Ideal Diode Equation
Go Diode Current = Reverse Saturation Current*(e^(([Charge-e]*Diode Voltage)/([BoltZ]*Temperature))-1)
Capacitance of Varactor Diode
Go Capacitance of Varactor Diode = Material Constant/((Barrier Potential+Reverse Voltage)^Doping Constant)
Self-Resonance Frequency of Varactor Diode
Go Self Resonance Frequency = 1/(2*pi*sqrt(Inductance of Varactor Diode*Capacitance of Varactor Diode))
Saturation Drain Current
Go Diode Saturation Current = 0.5*Transconductance Parameter*(Gate Source Voltage-Threshold Voltage)
Cut-off Frequency of Varactor Diode
Go Cut-off Frequency = 1/(2*pi*Series Field Resistance*Capacitance of Varactor Diode)
Zener Current
Go Zener Current = (Input Voltage-Zener Voltage)/Zener Resistance
Thermal Voltage of Diode Equation
Go Thermal Voltage = [BoltZ]*Temperature/[Charge-e]
Diode Equation for Germanium at Room Temperature
Go Germanium Diode Current = Reverse Saturation Current*(e^(Diode Voltage/0.026)-1)
Quality Factor of Varactor Diode
Go Quality Factor = Cut-off Frequency/Operating Frequency
Responsivity
Go Responsivity = Photo Current/Incident Optical Power
Zener Resistance
Go Zener Resistance = Zener Voltage/Zener Current
Zener Voltage
Go Zener Voltage = Zener Resistance*Zener Current
Average DC Current
Go Direct Current = 2*Peak Current/pi
Voltage Equivalent of Temperature
Go Volt-Equivalent of Temperature = Room Temperature/11600
Maximum Wavelight
Go Maximum Wavelight = 1.24/Energy Gap

Capacitance of Varactor Diode Formula

Capacitance of Varactor Diode = Material Constant/((Barrier Potential+Reverse Voltage)^Doping Constant)
Cj = k/((Vb+VR)^n)

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 Capacitance of Varactor Diode?

Capacitance of Varactor Diode calculator uses Capacitance of Varactor Diode = Material Constant/((Barrier Potential+Reverse Voltage)^Doping Constant) to calculate the Capacitance of Varactor Diode, The Capacitance of Varactor Diode formula can be varied by varying the magnitude of the reverse bias voltage as it varies the width of the depletion region, d. Capacitance of Varactor Diode is denoted by Cj symbol.

How to calculate Capacitance of Varactor Diode using this online calculator? To use this online calculator for Capacitance of Varactor Diode, enter Material Constant (k), Barrier Potential (Vb), Reverse Voltage (VR) & Doping Constant (n) and hit the calculate button. Here is how the Capacitance of Varactor Diode calculation can be explained with given input values -> 1.5E+9 = 0.005/((0.85+9)^0.52).

FAQ

What is Capacitance of Varactor Diode?
The Capacitance of Varactor Diode formula can be varied by varying the magnitude of the reverse bias voltage as it varies the width of the depletion region, d and is represented as Cj = k/((Vb+VR)^n) or Capacitance of Varactor Diode = Material Constant/((Barrier Potential+Reverse Voltage)^Doping Constant). Material Constant is the constant value for the material used in a particular formula, Barrier Potential refers to the potential required to overcome the barrier, Reverse Voltage refers to the voltage that is applied in the reverse bias direction across the diode & Doping Constant is defined as a constant which discusses the doping level of the material.
How to calculate Capacitance of Varactor Diode?
The Capacitance of Varactor Diode formula can be varied by varying the magnitude of the reverse bias voltage as it varies the width of the depletion region, d is calculated using Capacitance of Varactor Diode = Material Constant/((Barrier Potential+Reverse Voltage)^Doping Constant). To calculate Capacitance of Varactor Diode, you need Material Constant (k), Barrier Potential (Vb), Reverse Voltage (VR) & Doping Constant (n). With our tool, you need to enter the respective value for Material Constant, Barrier Potential, Reverse Voltage & Doping Constant and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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