Saturation Drain Current Calculator

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Diode Characteristics

Charge Carrier Characteristics

Electrostatic Parameters

Semiconductor Characteristics

Transistor Operating Parameters

✖Transconductance parameter is a crucial parameter in electronic devices and circuits, which helps to describe and quantify the input-output relationship between voltage and current.ⓘ Transconductance Parameter [g_m]			+10% -10%
✖Gate Source Voltage of a transistor is the voltage that falls across the gate-source terminal of the transistor.ⓘ Gate Source Voltage [V_gs]			+10% -10%
✖Threshold Voltage of transistor is minimum gate to source voltage that is needed to create a conducting path between the source and drain terminals.ⓘ Threshold Voltage [V_th]			+10% -10%

✖Diode Saturation current is the diode leakage current density in the absence of light. It is an important parameter which differentiates one diode from another.ⓘ Saturation Drain Current [I_s]

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Formula

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Saturation Drain Current

Formula

`"I"_{"s"} = 0.5*"g"_{"m"}*("V"_{"gs"}-"V"_{"th"})`

Example

`"9.9mA"=0.5*"0.036S"*("1.25V"-"0.7V")`

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Saturation Drain Current Solution

STEP 0: Pre-Calculation Summary

Formula Used

Diode Saturation Current = 0.5*Transconductance Parameter*(Gate Source Voltage-Threshold Voltage)
I_s = 0.5*g_m*(V_gs-V_th)
This formula uses 4 Variables

Variables Used

Diode Saturation Current - (Measured in Ampere) - Diode Saturation current is the diode leakage current density in the absence of light. It is an important parameter which differentiates one diode from another.
Transconductance Parameter - (Measured in Siemens) - Transconductance parameter is a crucial parameter in electronic devices and circuits, which helps to describe and quantify the input-output relationship between voltage and current.
Gate Source Voltage - (Measured in Volt) - Gate Source Voltage of a transistor is the voltage that falls across the gate-source terminal of the transistor.
Threshold Voltage - (Measured in Volt) - Threshold Voltage of transistor is minimum gate to source voltage that is needed to create a conducting path between the source and drain terminals.

STEP 1: Convert Input(s) to Base Unit

Transconductance Parameter: 0.036 Siemens --> 0.036 Siemens No Conversion Required
Gate Source Voltage: 1.25 Volt --> 1.25 Volt No Conversion Required
Threshold Voltage: 0.7 Volt --> 0.7 Volt No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I_s = 0.5*g_m*(V_gs-V_th) --> 0.5*0.036*(1.25-0.7)

Evaluating ... ...

I_s = 0.0099

STEP 3: Convert Result to Output's Unit

0.0099 Ampere -->9.9 Milliampere (Check conversion here)

FINAL ANSWER

9.9 Milliampere <-- Diode Saturation Current

(Calculation completed in 00.004 seconds)

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Created by Akshada Kulkarni

National Institute of Information Technology (NIIT), Neemrana

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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

Saturation Drain Current Formula

Diode Saturation Current = 0.5*Transconductance Parameter*(Gate Source Voltage-Threshold Voltage)
I_s = 0.5*g_m*(V_gs-V_th)

How drain current alters with the gate to source and threshold voltage?

The drain current is zero if the gate-to-source voltage is less than the threshold voltage. The linear expression is only valid if the drain-to-source voltage is much smaller than the gate-to-source voltage minus the threshold voltage. This insures that the velocity, the electric field and the inversion layer charge density is indeed constant between the source and the drain. While there is no drain current if the gate voltage is less than the threshold voltage, the current increases with gate voltage once it is larger than the threshold voltage.

How to Calculate Saturation Drain Current?

Saturation Drain Current calculator uses Diode Saturation Current = 0.5*Transconductance Parameter*(Gate Source Voltage-Threshold Voltage) to calculate the Diode Saturation Current, Saturation Drain Current controls the flow of current by the application of a voltage to the gate, which in turn alters the conductivity between the drain and source. Diode Saturation Current is denoted by I_s symbol.

How to calculate Saturation Drain Current using this online calculator? To use this online calculator for Saturation Drain Current, enter Transconductance Parameter (g_m), Gate Source Voltage (V_gs) & Threshold Voltage (V_th) and hit the calculate button. Here is how the Saturation Drain Current calculation can be explained with given input values -> 9900 = 0.5*0.036*(1.25-0.7).

FAQ

What is Saturation Drain Current?

Saturation Drain Current controls the flow of current by the application of a voltage to the gate, which in turn alters the conductivity between the drain and source and is represented as I_s = 0.5*g_m*(V_gs-V_th) or Diode Saturation Current = 0.5*Transconductance Parameter*(Gate Source Voltage-Threshold Voltage). Transconductance parameter is a crucial parameter in electronic devices and circuits, which helps to describe and quantify the input-output relationship between voltage and current, Gate Source Voltage of a transistor is the voltage that falls across the gate-source terminal of the transistor & Threshold Voltage of transistor is minimum gate to source voltage that is needed to create a conducting path between the source and drain terminals.

How to calculate Saturation Drain Current?

Saturation Drain Current controls the flow of current by the application of a voltage to the gate, which in turn alters the conductivity between the drain and source is calculated using Diode Saturation Current = 0.5*Transconductance Parameter*(Gate Source Voltage-Threshold Voltage). To calculate Saturation Drain Current, you need Transconductance Parameter (g_m), Gate Source Voltage (V_gs) & Threshold Voltage (V_th). With our tool, you need to enter the respective value for Transconductance Parameter, Gate Source Voltage & Threshold Voltage 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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