IRF520 MOSFET Driver Module is an essential power interface designed to bridge the gap between low-voltage microcontrollers and high-current loads. This compact module employs the popular IRF520 N-channel MOSFET, consequently allowing small control signals (3.3V to 5V) from devices like Arduino or Raspberry Pi to switch high-power DC circuits efficiently. The module simplifies high-side and low-side switching applications by integrating necessary components, furthermore reducing circuit complexity and saving valuable PCB space. Therefore, engineers and hobbyists rely on the IRF520 module to drive high-power components such as DC motors, LED strips, solenoid valves, and heating elements.
Key Features:
- High Current Switching: This module utilizes the IRF520 MOSFET, enabling it to handle continuous DC load currents up to 9.7 A (with appropriate cooling).
- Low Voltage Logic Compatibility: The module drives the MOSFET effectively with control signals from 3.3V to 5V microcontrollers, ensuring wide system compatibility.
- Integrated Indicator LED: An onboard LED visually indicates the module’s operating status, making testing and troubleshooting simpler.
- Screw Terminal Connections: High-quality screw terminals facilitate secure and reliable connections for high-current load wiring.
- Robust Switching Speed: The N-channel MOSFET provides fast switching times, making it suitable for Pulse Width Modulation (PWM) control applications like motor speed regulation.
Technical Specifications:
- MOSFET Used: IRF520 (N-Channel Power MOSFET)
- Maximum Drain-Source Voltage (VDS): 100 V
- Continuous Drain Current (ID): 9.7 A (at 25°C, with heatsink)
- Input Control Voltage (VGS): 3.3 V to 5 V (Logic Level)
- Gate-Source Voltage (VGS max): ±20 V
- On-Resistance (RDS(on)): Typically 0.27 Ω (at VGS = 10V)
- Operating Temperature Range: −55°C to +175°C (MOSFET Junction)
Mechanical Specifications:
- Module Material: PCB with Screw Terminals and Pin Headers
- Mounting: Fixed hole diameter ≈ 3 mm (for easy mounting in enclosures).
- MOSFET Package: TO-220 (Mounted on PCB)
- Weight: ≈ 10 g
Dimensions:
- Module Length: ≈ 33.0 mm
- Module Width: ≈ 25.0 mm
- Module Height: ≈ 15.0 mm (including components and terminals)
- Color: Typically Red/Black PCB
Pinout and Wiring:
- Pin 1 (GND): Connect the ground of the control circuit (e.g., Arduino GND).
- Pin 2 (VCC): Connect the 5V power supply to power the logic side of the module (optional, often tied to VDD or 5V).
- Pin 3 (SIG): Connect the PWM or digital signal output pin from your microcontroller. This pin drives the MOSFET Gate.
- Pin 4 (V+): Connect the positive voltage line for the load (VLOAD, up to 100V DC).
- Pin 5 (GND): Connect the ground of the load circuit (common ground).
- Pin 6 (OUT): Connect to the positive terminal of the DC load. The load is typically connected between V+ and OUT, with the module switching the negative side (Low-Side Switching).
Datasheet Reference:
Commonly Used in:
- Arduino and Microcontroller Projects: Serving as the essential interface for high-power peripherals.
- 3D Printers and CNC Machines: Used for controlling heating elements and high-current stepper motors.
- Robotics: Driving DC motors, grippers, and high-intensity lighting systems.
Applications:
- DC Motor Speed Control: Utilizing PWM signals from a microcontroller to smoothly regulate motor RPM.
- LED Strip Dimming: Providing high-frequency PWM switching for dimming high-power 12V or 24V LED lighting.
- Heating Element Control: Switching on/off or controlling the duty cycle of resistive heating loads in temperature control systems.
- Solenoid and Valve Actuation: Controlling electromagnetic locks and fluid valves requiring substantial current.
Equivalent Models:
- IRF540N Module: However, this is a higher-current, slightly higher-voltage alternative for more demanding loads.
- IRLZ44N Module: A popular logic-level alternative often used in similar low-side switching applications.
- Other Standard MOSFET Driver Modules: Modules featuring the BUK9507 or similar N-channel FETs can function as direct, although not pin-compatible, replacements.
Package Includes:
- 1 x IRF520 MOSFET Driver Module for Arduino ARM Raspberry pi


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