IRF520 24V MOSFET Driver Module for Arduino & Raspberry Pi | 2-Pack
IRF520 24V MOSFET Driver Module for Arduino & Raspberry Pi | 2-Pack
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📋 Overview
Your Arduino or Raspberry Pi GPIO pin can output 3.3V or 5V at a few milliamps — nowhere near enough to drive a DC motor, LED strip, solenoid valve, or pump directly. The IRF520 MOSFET Driver Module solves that. It uses an IRF520 N-channel power MOSFET as an electronic switch, letting a single microcontroller pin control DC loads up to 24V and 5A. Wire it up, send a HIGH signal, and your load turns on. Send a LOW signal, and it turns off. Connect SIG to a PWM pin and you get smooth LED dimming or variable motor speed control.
The module switches the ground side of your load (low-side switching), so the load's positive supply stays connected and only the return path is controlled. An onboard blue LED gives instant visual confirmation that the MOSFET is conducting. Screw terminal connectors on the load side mean no soldering required. This listing includes two modules.
⭐ Key Features
- 3.3V & 5V Logic Compatible: Driven directly from Arduino, Raspberry Pi, ESP32, or any 3.3V/5V microcontroller GPIO pin — no additional driver circuit needed.
- Switches Loads up to 24V / 5A: Handles DC loads far beyond what any microcontroller pin can drive directly.
- PWM Ready: Connect SIG to a PWM output pin for smooth LED dimming, motor speed control, and variable power delivery.
- Onboard Status LED: Blue LED illuminates when SIG is HIGH and the MOSFET is conducting — instant visual feedback during development and testing.
- Screw Terminal Load Connections: Secure, tool-tightened terminals on the load side — no soldering needed for wiring your load.
- Low-Side Switch Design: Switches the GND/negative side of the load using the IRF520 N-channel MOSFET.
- 2-Pack: Includes two modules — drive two independent loads from the same order.
🎯 Applications
- DC motor on/off and variable speed control (PWM)
- LED strip and high-power LED dimming
- Solenoid valve actuation
- Miniature water pump and air pump switching
- Fan speed control in cooling systems
- Relay coil driving from 3.3V microcontrollers
- Heater element switching
- Robotics actuator control
📊 Specifications
| Parameter | Value |
|---|---|
| MOSFET | IRF520 N-Channel Power MOSFET |
| Control (Input) Voltage | 3.3V or 5V logic |
| Output Load Voltage | 0 – 24V DC |
| Output Load Current | <5A |
| Heat Sink Requirement | Required for continuous loads above 1A (not included) |
| Switch Type | Low-side (switches the GND/negative side of the load) |
| PWM Compatible | Yes |
| Onboard Indicator | Blue LED (illuminates when SIG is HIGH) |
| Dimensions | Approx. 33 × 24 mm (1.3 × 0.94 inches) L × W |
| Weight | 10g per module |
📌 Pinout / Pin Diagram
Control Header (3-pin)
| Pin | Description |
|---|---|
| GND | Ground — connect to microcontroller GND (must be common with load supply GND) |
| VCC | Optional 3.3V/5V for onboard LED — not required for Arduino or Raspberry Pi use |
| SIG | Signal input — connect to a digital or PWM output pin. HIGH = load ON. LOW = load OFF. |
Load Screw Terminals
| Terminal | Description |
|---|---|
| Vin | Load power supply positive — connect to your DC supply positive (up to 24V) |
| GND | Load power supply negative — also connect to control header GND |
| V+ | Load positive terminal — internally connected to Vin |
| V− | Load negative terminal (switched) — connected to GND through MOSFET when SIG is HIGH |
For complete wiring diagrams, Arduino and Raspberry Pi code examples, PWM control sketches, and step-by-step connection instructions, see the 📘 IRF520 24V MOSFET Driver Module User Guide.
⚠️ Important Notes
- Add a flyback diode for inductive loads. When switching DC motors, solenoids, or relays, always add a flyback diode across the load (cathode to V+, anode to V−). Without it, back-EMF voltage spikes when the load switches off can destroy the MOSFET. A 1N4007 diode works well for most applications.
- Heat sink required above 1A continuous. For sustained loads above 1A, attach a small aluminium heat sink to the IRF520 MOSFET. Running above 1A without one will cause overheating and potential failure. Heat sink is not included.
- DC loads only. This module is designed for DC loads only. Do not use it to switch AC mains voltage (120V/240V household power). For AC switching, use a relay module or solid-state relay.
- Common ground is essential. The GND on the control header and the GND on the load screw terminals must be connected together. Without a shared ground the MOSFET will not switch reliably.
- Low-side switch only. This module controls the negative/ground side of the load. It is not a high-side switch and cannot control the positive rail. For bidirectional motor control, use an H-bridge motor driver module.
📦 What's in the Box
- 2x IRF520 24V MOSFET Driver Modules
Heat sink, flyback diode, jumper wires, power supply, and load are not included.
📄 Documentation & Resources
- 📘 IRF520 24V MOSFET Driver Module User Guide — Complete pinout, wiring tables, Arduino ON/OFF and PWM code examples, Raspberry Pi Python examples, tips on flyback diodes and heat sinks, limitations, and troubleshooting.
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🔗 All Power & Switching Component User Guides
Sold and supported by Envistia Mall. Ships from the USA. For complete setup instructions, wiring, and troubleshooting, visit the User Guide linked above. The manufacturer and Envistia LLC (dba Envistia Mall) are not responsible for any damages or losses resulting from the use of this product. Always follow proper electrical safety practices when working with electronic components. Specifications are based on manufacturer data and are subject to change without notice.
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