Pinch off Voltage of FET Calculator

✖Pinch OFF Drain Source Voltage FETis the voltage at which the depletion regions of the gate junctions meet and pinch off the channel, preventing any further current flow.ⓘ Pinch OFF Drain Source Voltage FET [V_ds-off(fet)]			+10% -10%
✖Drain Source Voltage FET is the voltage between the drain and the source terminal of an FET.ⓘ Drain Source Voltage FET [V_ds(fet)]			+10% -10%

✖Pinch OFF Voltage is the voltage at which the channel of a field-effect transistor (FET) becomes so narrow that it effectively closes, preventing any further current flow.ⓘ Pinch off Voltage of FET [V_off(fet)]

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Formula

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Pinch off Voltage of FET

Formula

`"V"_{"off(fet)"} = "V"_{"ds-off(fet)"}-"V"_{"ds(fet)"}`

Example

`"63.36V"="68.16V"-"4.8V"`

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Pinch off Voltage of FET Solution

STEP 0: Pre-Calculation Summary

Formula Used

Pinch OFF Voltage = Pinch OFF Drain Source Voltage FET-Drain Source Voltage FET
V_off(fet) = V_ds-off(fet)-V_ds(fet)
This formula uses 3 Variables

Variables Used

Pinch OFF Voltage - (Measured in Volt) - Pinch OFF Voltage is the voltage at which the channel of a field-effect transistor (FET) becomes so narrow that it effectively closes, preventing any further current flow.
Pinch OFF Drain Source Voltage FET - (Measured in Volt) - Pinch OFF Drain Source Voltage FETis the voltage at which the depletion regions of the gate junctions meet and pinch off the channel, preventing any further current flow.
Drain Source Voltage FET - (Measured in Volt) - Drain Source Voltage FET is the voltage between the drain and the source terminal of an FET.

STEP 1: Convert Input(s) to Base Unit

Pinch OFF Drain Source Voltage FET: 68.16 Volt --> 68.16 Volt No Conversion Required
Drain Source Voltage FET: 4.8 Volt --> 4.8 Volt No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

V_off(fet) = V_ds-off(fet)-V_ds(fet) --> 68.16-4.8

Evaluating ... ...

V_off(fet) = 63.36

STEP 3: Convert Result to Output's Unit

63.36 Volt --> No Conversion Required

FINAL ANSWER

63.36 Volt <-- Pinch OFF Voltage

(Calculation completed in 00.004 seconds)

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Acharya institute of technology (AIT), Bengaluru

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< 8 FET Calculators

Ohmic Region Drain Current of FET

Go Drain Current FET = Channel Conductance FET*(Drain Source Voltage FET+3/2*((Surface Potential FET+Drain Source Voltage FET-Drain Source Voltage FET)^(3/2)-(Surface Potential FET+Drain Source Voltage FET)^(3/2))/((Surface Potential FET+Pinch OFF Voltage)^(1/2)))

Transconductance of FET

Go Forward Transconductance FET = (2*Zero Bias Drain Current)/Pinch OFF Voltage*(1-Drain Source Voltage FET/Pinch OFF Voltage)

Drain Source Voltage of FET

Go Drain Source Voltage FET = Supply Voltage at Drain FET-Drain Current FET*(Drain Resistance FET+Source Resistance FET)

Gate Source Capacitance of FET

Go Gate Source Capacitance FET = Gate Source Capacitance Off Time FET/(1-(Drain Source Voltage FET/Surface Potential FET))^(1/3)

Gate Drain Capacitance of FET

Go Gate Drain Capacitance FET = Gate Drain Capacitance Off Time FET/(1-Gate to Drain Voltage FET/Surface Potential FET)^(1/3)

Drain Current of FET

Go Drain Current FET = Zero Bias Drain Current*(1-Drain Source Voltage FET/Cutt-off Voltage FET)^2

Pinch off Voltage of FET

Go Pinch OFF Voltage = Pinch OFF Drain Source Voltage FET-Drain Source Voltage FET

Voltage Gain of FET

Go Voltage Gain FET = -Forward Transconductance FET*Drain Resistance FET

Pinch off Voltage of FET Formula

Pinch OFF Voltage = Pinch OFF Drain Source Voltage FET-Drain Source Voltage FET
V_off(fet) = V_ds-off(fet)-V_ds(fet)

What is Pinch off Voltage of FET ?

the pinch-off voltage is the gate-source voltage at which the channel is fully constricted, and current flow is cut off. In an n-channel JFET, the Vth is typically a negative voltage, while in a p-channel JFET, it's a positive voltage. Understanding and controlling the pinch-off voltage is essential for designing and operating FETs in electronic circuits, as it determines when the transistor begins to conduct and allows precise control of the device's operation.

How to Calculate Pinch off Voltage of FET?

Pinch off Voltage of FET calculator uses Pinch OFF Voltage = Pinch OFF Drain Source Voltage FET-Drain Source Voltage FET to calculate the Pinch OFF Voltage, Pinch off Voltage of FET is the voltage at which the channel of the FET is pinched off, preventing further current flow. It is also known as the threshold voltage. In a junction field-effect transistor (JFET), the pinch-off voltage is the voltage at which the depletion regions of the gate junctions meet and pinch off the channel. This happens because the gate voltage creates an electric field that attracts electrons away from the channel, forming depletion regions. When the depletion regions meet, they effectively close the channel, preventing any further current flow. Pinch OFF Voltage is denoted by V_off(fet) symbol.

How to calculate Pinch off Voltage of FET using this online calculator? To use this online calculator for Pinch off Voltage of FET, enter Pinch OFF Drain Source Voltage FET (V_ds-off(fet)) & Drain Source Voltage FET (V_ds(fet)) and hit the calculate button. Here is how the Pinch off Voltage of FET calculation can be explained with given input values -> 68.1454 = 68.16-4.8.

FAQ

What is Pinch off Voltage of FET?

Pinch off Voltage of FET is the voltage at which the channel of the FET is pinched off, preventing further current flow. It is also known as the threshold voltage. In a junction field-effect transistor (JFET), the pinch-off voltage is the voltage at which the depletion regions of the gate junctions meet and pinch off the channel. This happens because the gate voltage creates an electric field that attracts electrons away from the channel, forming depletion regions. When the depletion regions meet, they effectively close the channel, preventing any further current flow and is represented as V_off(fet) = V_ds-off(fet)-V_ds(fet) or Pinch OFF Voltage = Pinch OFF Drain Source Voltage FET-Drain Source Voltage FET. Pinch OFF Drain Source Voltage FETis the voltage at which the depletion regions of the gate junctions meet and pinch off the channel, preventing any further current flow & Drain Source Voltage FET is the voltage between the drain and the source terminal of an FET.

How to calculate Pinch off Voltage of FET?

Pinch off Voltage of FET is the voltage at which the channel of the FET is pinched off, preventing further current flow. It is also known as the threshold voltage. In a junction field-effect transistor (JFET), the pinch-off voltage is the voltage at which the depletion regions of the gate junctions meet and pinch off the channel. This happens because the gate voltage creates an electric field that attracts electrons away from the channel, forming depletion regions. When the depletion regions meet, they effectively close the channel, preventing any further current flow is calculated using Pinch OFF Voltage = Pinch OFF Drain Source Voltage FET-Drain Source Voltage FET. To calculate Pinch off Voltage of FET, you need Pinch OFF Drain Source Voltage FET (V_ds-off(fet)) & Drain Source Voltage FET (V_ds(fet)). With our tool, you need to enter the respective value for Pinch OFF Drain Source Voltage FET & Drain Source Voltage FET 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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