The IRFZ44N is a powerful N-channel MOSFET commonly used for switching and amplifying signals in electronic circuits. It’s ideal for controlling high-current devices like motors, LED strips, and heaters with your Arduino.

In this tutorial, you’ll learn how to safely and effectively use the IRFZ44N with an Arduino Uno to switch a DC load.

Why Use the IRFZ44N MOSFET?

• Can handle high currents (up to 49A)
• Suitable for voltage levels up to 55V
• Low Rds(on) for minimal power loss
• Widely available and inexpensive

What You’ll Need

• IRFZ44N N-channel MOSFET
• Arduino Uno R3
• DC load (e.g., motor or LED strip)
• Flyback diode (e.g., 1N4007) for inductive loads
• Resistor (10kΩ for gate pulldown)
• Breadboard and jumper wires

Wiring the IRFZ44N with Arduino

• Gate (G) → Arduino pin 9 via 220Ω resistor
• Drain (D) → Negative terminal of the load
• Source (S) → GND
• Positive terminal of the load → Positive voltage (e.g., 12V)
• 10kΩ pulldown resistor between Gate and GND
• Add a flyback diode across the load for protection (cathode to +V, anode to drain)

Sample Code to Control the MOSFET

int mosfetPin = 9; // Gate connected to pin 9

void setup() {
pinMode(mosfetPin, OUTPUT);
}

void loop() {
digitalWrite(mosfetPin, HIGH); // Turn ON load
delay(3000);
digitalWrite(mosfetPin, LOW); // Turn OFF load
delay(3000);
}

This code switches the MOSFET on and off in 3-second intervals.

Applications of IRFZ44N MOSFET

• High-power LED dimming
• Motor speed control
• Heating element control
• Battery charging circuits

Conclusion

The IRFZ44N MOSFET is a great tool for managing power-hungry components in your Arduino projects. With just a few components, you can build efficient and safe switching circuits. Browse MOSFETs, diodes, and more at Rdxlectronics.com to power up your next DIY innovation!