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MOSFET Subthreshold Swing (SS) & Off-State Leakage Current Calculator

Easily calculate and compute mosfet subthreshold swing (ss) & off-state leakage current calculator with accurate equations, live formulas, and expert guidance.

Operating silicon temperature (300 K = 27°C, 358 K = 85°C).

Depletion capacitance divided by gate oxide capacitance (0 for ideal GAA/FinFET, ~0.2 for planar).

Operating threshold voltage.

Current at threshold.

Calculated Result
68.5 mV/dec

Subthreshold Swing (SS)

Subthreshold Swing (SS)

68.5 mV/dec

Subthreshold Swing Milli Volts Per Decade

68.5

Ideal Boltzmann Limit Milli Volts Per Decade

59.5

Off State Current Pico Amps

414.6

Subthreshold Decades Of Rejection

4.38

68.5 — mV/dec

Calculation Breakdown

  1. Applied FormulaCalculates the MOSFET subthreshold swing (SS in mV/decade of drain current) and determines off-state standby leakage current relative to the room-temperature Boltzmann thermal limit.I_{off} = I_{th} \times 10^{-\frac{V_{th}}{SS}}

MOSFET Subthreshold Swing Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.017345169Subthreshold Swing (SS)

What Is the MOSFET Subthreshold Swing (SS) & Off-State Leakage Current Calculator?

This tool computes mosfet subthreshold swing (ss) & off-state leakage current calculator with high precision arithmetic.

How Does the MOSFET Subthreshold Swing (SS) & Off-State Leakage Current Calculator Work?

Calculates the MOSFET subthreshold swing (SS in mV/decade of drain current) and determines off-state standby leakage current relative to the room-temperature Boltzmann thermal limit.

MOSFET Subthreshold Swing (SS) & Off-State Leakage Current Calculator Formula & Variables

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

Ioff=Ith×10−VthSSI_{off} = I_{th} \times 10^{-\frac{V_{th}}{SS}}

Calculates the MOSFET subthreshold swing (SS in mV/decade of drain current) and determines off-state standby leakage current relative to the room-temperature Boltzmann thermal limit.

How to Use the MOSFET Subthreshold Swing (SS) & Off-State Leakage Current Calculator

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

Step-by-Step Example Calculation

MOSFET Subthreshold Swing (SS) & Off-State Leakage Current Calculator Example

Input Values:

temperatureKelvin:300.0
depletionCapacitanceCdOverCox:0.15
thresholdVoltageVthVolts:0.30
onCurrentAmpsIon:10.0
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required mV/dec.

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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