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MOSFET Drain Current (I_D) Square-Law (Linear, Triode & Saturation) Calculator

Easily calculate and compute mosfet drain current (i_d) square-law (linear, triode & saturation) calculator with accurate equations, live formulas, and expert guidance.

Transistor physical gate width.

Transistor gate length.

Effective surface electron mobility.

Gate oxide physical thickness.

Device threshold voltage.

Applied gate voltage.

Applied drain voltage.

Early effect parameter (0 for ideal long-channel).

Calculated Result
2.77 mA

Drain Current (I_D)

Drain Current (I_D)

2.77 mA

Drain Current Ma

2.77

Operating Region

Saturation (Active Pinch-off)

Overdrive Voltage Vov

1.15

Transconductance Gm M S

4.82

2.77 — mA

Calculation Breakdown

  1. Applied FormulaEvaluates the classic Shichman-Hodges square-law drain current, transconductance (gm), output impedance (rds), and channel-length pinch-off state for planar MOSFETs.I_D = \mu_n C_{ox} \frac{W}{L} \left[(V_{GS} - V_{th})V_{DS} - \frac{1}{2}V_{DS}^2\right](1 + \lambda V_{DS}), \quad V_{DS,sat} = V_{GS} - V_{th}

MOSFET Drain Current I_D Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.00.71.42.12.8Drain Current (I_D)

What Is the MOSFET Drain Current (I_D) Square-Law (Linear, Triode & Saturation) Calculator?

This tool computes mosfet drain current (i_d) square-law (linear, triode & saturation) calculator with high precision arithmetic.

How Does the MOSFET Drain Current (I_D) Square-Law (Linear, Triode & Saturation) Calculator Work?

Evaluates the classic Shichman-Hodges square-law drain current, transconductance (gm), output impedance (rds), and channel-length pinch-off state for planar MOSFETs.

MOSFET Drain Current (I_D) Square-Law (Linear, Triode & Saturation) Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

ID=μnCoxWL[(VGS−Vth)VDS−12VDS2](1+λVDS),VDS,sat=VGS−VthI_D = \mu_n C_{ox} \frac{W}{L} \left[(V_{GS} - V_{th})V_{DS} - \frac{1}{2}V_{DS}^2\right](1 + \lambda V_{DS}), \quad V_{DS,sat} = V_{GS} - V_{th}

Evaluates the classic Shichman-Hodges square-law drain current, transconductance (gm), output impedance (rds), and channel-length pinch-off state for planar MOSFETs.

How to Use the MOSFET Drain Current (I_D) Square-Law (Linear, Triode & Saturation) Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

MOSFET Drain Current (I_D) Square-Law (Linear, Triode & Saturation) Calculator Example

Input Values:

channelWidthUm:10
channelLengthUm:1
effectiveMobilityCm2PerVs:450
gateOxideThicknessNm:4
thresholdVoltageVth:0.65
gateToSourceVoltageVgs:1.8
drainToSourceVoltageVds:2
channelLengthModulationLambda:0.04
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required mA.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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