FET

Key Features

• Voltage-Controlled Operation: Minimal current draw on the Gate pin, allowing direct interfacing with low-power microprocessors.
• High Input Impedance: Prevents “loading” of the previous stage in a circuit, preserving signal integrity.
• Fast Switching Speeds: Excellent for high-frequency Pulse Width Modulation (PWM) applications.
• Low On-Resistance ($R_{DS(on)}$): Minimizes power loss and heat generation during high-current conduction.
• Excellent Thermal Stability: Designed to perform reliably even under varying temperature conditions.

Technical Specifications

Drain-Source Voltage                   20V to 600V+

Continuous Drain Current           200mA (Signal) to 50A+ (Power)

Gate-Source Threshold                1.0V to 4.0V (Logic Level compatible available)

Package Types                               TO-92 (Signal), TO-220 (Power), SOT-23 (SMD)

Common Models                          2N7000, IRFZ44N, BS170, J113 (JFET)

Common Applications

• Motor & Solenoid Driving: Using PWM to control the speed and direction of DC motors.
• Power Switching: Acting as a high-efficiency solid-state switch in battery-powered devices.
• Audio Preamplifiers: Utilizing JFETs for high-fidelity, low-noise signal amplification.
• LED Dimming: Controlling high-power LED strips and arrays with precision.
• Sample-and-Hold Circuits: Exploiting high input impedance for analog signal processing.
• Logic Level Shifting: Allowing 3.3V and 5V systems to communicate safely.