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Varactor Diode Calculator

This page of converters and calculators section covers Varactor diode calculator. The calculator calculates diode capacitance,cut off frequency and quality factor.

Diode capacitance at zero voltage in PF (input1) :

Barrier potential (input2) :

Applied reverse bias potential (input3) :

Series resistance in Ohm (input4) :

Operating Frequency in MHz(input5):

m factor (input6):

Diode Capacitance in farads (Output1):

Cutoff frequency in Hz (Output2):

Quality Factor (Output3):

*Note: Enter values in INPUT boxes and Press CALCULATE button to check OUTPUTS.

INPUTS : Diode capacitance=100PF,Barrier Potential=0.65V,Reverse bias potential=-4V, Series resistance = 12 Ohm, Operating frequency = 54 MHz , m factor =1/2
OUTPUTS: Diode capacitance at applied reverse bias =46.4 V, cutoff frequency=286 MHz, Q=5.29

Varactor Diode Equation

Following equation or formula is used for Varactor diode calculator.

Varactor diode calculator equation

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