MOSFET Calculator & Formula : Id, gm, Vgs Tool

MOSFETs (Metal Oxide Semiconductor Field Effect Transistors) are the most widely used transistors in modern electronics, ranging from digital logic to power electronics. Their operation depends on gate source voltage, threshold voltage and channel characteristics. The MOSFET Calculator helps users analyze MOSFET behavior by computing drain current, transconductance and operating region using standard MOSFET equations for linear and saturation modes.

MOSFET Calculator

EXAMPLE:

INPUTS:

• Threshold Voltage, Vt = 2.0 Volts
• Transconductance parameter, K = 0.0005 A/V^2
• Gate-Source Voltage, Vgs = 4.0 Volts
• Drain-Source Voltage, Vds = 1.0 Volts

OUTPUT:

• Saturation Drain Current (Id1) = 0.75 mA
• Linear Region Drain Current (Id2) = 1 mA
• Transconductance = 1 mS

MOSFET Transistor Formula

Summary:

This MOSFET calculator provides accurate calculations of key parameters such as drain current, threshold voltage effects and transconductance. By automating MOSFET formula based analysis, it assists in understanding device performance, validating circuit designs and optimizing bias conditions for both N-channel and P-channel MOSFETs.