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MOSFET Drain Current (Square-Law Model) Calculator

Easily calculate and compute mosfet drain current (square-law model) calculator with accurate equations, live formulas, and expert guidance.

Applied gate bias.

Applied drain bias.

Device threshold.

Channel width over length.

Mobility * oxide capacitance.

Early voltage reciprocal.

Calculated Result
1.5 mA

Drain Current I_D

Drain Current I_D

1.5 mA

Drain Current Ma

1.50215625

Overdrive Voltage V

1.05

Operating Mode

Saturation

1.5 — mA

Calculation Breakdown

  1. Applied FormulaEvaluates classical Shichman-Hodges square law drain current I_D across linear (triode), pinch-off, and saturation with channel length modulation.I_D = \frac{1}{2} \mu_n C_{\text{ox}} \frac{W}{L} (V_{GS} - V_{\text{th}})^2 (1 + \lambda V_{DS})

MOSFET Drain Current Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.00.40.81.11.5Drain Current I_D

What Is the MOSFET Drain Current (Square-Law Model) Calculator?

This tool computes mosfet drain current (square-law model) calculator with high precision arithmetic.

How Does the MOSFET Drain Current (Square-Law Model) Calculator Work?

Evaluates classical Shichman-Hodges square law drain current I_D across linear (triode), pinch-off, and saturation with channel length modulation.

MOSFET Drain Current (Square-Law Model) Calculator Formula & Variables

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

ID=12μnCoxWL(VGS−Vth)2(1+λVDS)I_D = \frac{1}{2} \mu_n C_{\text{ox}} \frac{W}{L} (V_{GS} - V_{\text{th}})^2 (1 + \lambda V_{DS})

Evaluates classical Shichman-Hodges square law drain current I_D across linear (triode), pinch-off, and saturation with channel length modulation.

How to Use the MOSFET Drain Current (Square-Law Model) Calculator

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

Step-by-Step Example Calculation

MOSFET Drain Current (Square-Law Model) Calculator Example

Input Values:

vgsVolts:1.5
vdsVolts:1.8
vthVolts:0.45
wOverLRatio:10
muCoxUaPerV2:250
lambdaPerVolt:0.05
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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