DC 3V–24V MOSFET Switch Module | Optocoupler Control Board
DC 3V–24V MOSFET Switch Module | Optocoupler Control Board
DC 3V–24V MOSFET Electronic Switch Control Module with Optocoupler Isolation
Take full control of your DC-powered devices with this compact, versatile MOSFET switch module. Featuring complete optocoupler isolation between input and output, this board is ideal for makers, engineers, and hobbyists working with Arduino, STM32, PLC systems, and more. Drive motors, LED strips, solenoid valves, micro-pumps, and other high-power loads safely and efficiently from a low-power signal source.
Key Features
- Wide Input Signal Range: Accepts digital high/low trigger signals from 3V to 24V DC, drawing only ~5mA — compatible with MCU I/O ports, PLC interfaces, and standard DC power supplies.
- Full Optocoupler Isolation: Complete electrical isolation between the signal (input) side and the load (output) side protects your microcontroller and signal source from load-side interference.
- High-Power Output Control: Output side supports 5V–36V at up to 5A continuously (add a heat sink for currents above 5A; absolute maximum is 20A).
- PWM Compatible: Accepts PWM input signals, enabling precise motor speed control, LED dimming, and variable-power applications.
- F5305S Power MOSFET: Built around the genuine F5305S power field-effect transistor for reliable, efficient switching performance.
- Wide Operating Temperature: Rated for use from -40°C to +80°C, making it suitable for a broad range of environments.
- Compact SMD Design: Small footprint (46mm × 25mm × 18mm) makes it easy to integrate into enclosures and project builds.
Specifications
| Input Signal Voltage | 3V – 24V DC |
| Input Current | ~5mA |
| Output Voltage Range | 5V – 36V DC |
| Output Current | Up to 5A (max 20A with heat sink) |
| MOSFET | F5305S Power Field-Effect Transistor |
| Isolation | Optocoupler (full input/output isolation) |
| Operating Temperature | -40°C to +80°C |
| Dimensions | 46mm × 25mm × 18mm |
| Package | SMD |
| Condition | New |
| Country of Origin | Made in China |
Compatible Loads
This module can switch and control a wide variety of DC loads including:
- DC motors and micro-pumps
- LED lights and LED strips
- Solenoid valves
- Bulbs and lighting loads
- Any resistive or inductive DC load within rated specs
Ideal For
- Arduino, STM32, and other microcontroller projects
- PLC automation systems
- DIY electronics and prototyping
- Motor speed control via PWM
- Home automation and robotics
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Frequently Asked Questions
Q: Can I use this MOSFET switch module with an Arduino or Raspberry Pi?
A: Yes! This module is fully compatible with Arduino, STM32, Raspberry Pi, and other microcontrollers. The input signal only requires 3V–24V at ~5mA, which is well within the output capability of any standard MCU I/O pin. The optocoupler isolation also protects your microcontroller from load-side voltage spikes.
Q: Can this module handle PWM signals for motor speed or LED brightness control?
A: Absolutely. The F5305S MOSFET at the heart of this module is fully PWM-compatible. Connect a PWM signal from your microcontroller to the input and you can smoothly vary motor speed, adjust LED brightness, or control pump flow rate on the output side.
Q: What is the maximum current this switch module can handle?
A: The module can handle up to 5A continuously without a heat sink. For currents between 5A and 20A, a heat sink must be added to the MOSFET. Do not exceed 20A under any circumstances to avoid damaging the module.
Q: Is the input side fully isolated from the output side?
A: Yes. The module uses an optocoupler to provide complete electrical isolation between the signal/input side and the load/output side. This means your control circuit (e.g. Arduino) is protected from any voltage transients generated by high-power loads such as motors or solenoid valves.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.