DIYables DIYables LR7843 Isolation MOSFET Module 30V 161A with Optocoupler for Arduino ESP32 ESP8266, High Power MOS Tube Switch Board Presoldered, 5 Pieces
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Quick Overview
The DIYables LR7843 Isolation MOSFET Module is a high-power switching solution designed for controlling motors, solenoid valves, and other high-current loads in Arduino, ESP32, and ESP8266 projects. Featuring the LR7843 MOSFET rated at 30V and 161A, this module provides robust switching capability for demanding applications while maintaining compact dimensions of just 23mm x 16mm.
Built with optocoupler isolation, this module separates the control signal from the power circuit, significantly improving anti-interference performance and system stability. The isolation design protects your microcontroller from voltage spikes and electrical noise generated by high-power loads, making it ideal for industrial automation, robotics, and motor control applications.
Compatible with both 3V and 5V control signals, the module works seamlessly with Arduino boards, ESP32, ESP8266, and other microcontrollers. It features high-level trigger activation (high level starts, low level stops) and supports PWM for variable speed control of motors and power regulation. The presoldered board includes flexible wiring options with terminals or pin headers, breadboard compatibility, and mounting holes for secure installation in your projects.
Key Features
- LR7843 High Power MOSFET — Rated up to 30V 161A for controlling motors, solenoid valves, and high-current loads
- Optocoupler Isolation Design — Built-in optocoupler isolates control signal from power circuit to improve anti-interference performance and system stability
- 3V and 5V Signal Compatible — Works with Arduino, ESP32, ESP8266, and other MCU boards using 3V or 5V control signals
- High Level Trigger with PWM — High level start, low level stop, supports PWM speed regulation for motor speed and power control applications
- Presoldered Compact Module — Presoldered board size 23mm x 16mm with screw holes for secure mounting
- Flexible Wiring Options — Signal input side can be soldered to terminal or pin header, compatible with breadboard
- Multiple Output Options — Output can be soldered to terminal or direct wire connection
- Secure Mounting Design — Two 2mm diameter screw holes with 8mm hole spacing for stable installation
- Wide Application Range — Perfect for motor control, solenoid valve switching, LED strips, heating elements, and high-power DC loads
- Enhanced System Protection — Optocoupler isolation protects microcontroller from voltage spikes and electrical noise
- Tutorial Support — Comprehensive guides for Arduino, ESP32, ESP8266, Raspberry Pi projects
SPECIFICATION
| Specification | Value |
|---|---|
| Product Type | High Power MOSFET Switch Module with Optocoupler Isolation |
| MOSFET Model | LR7843 |
| Voltage Rating | 30V DC |
| Current Rating | 161A (maximum) |
| Control Signal | 3V or 5V logic level (optocoupler isolated) |
| Trigger Type | High level trigger (ON), low level stop (OFF) |
| PWM Support | Yes, for speed and power regulation |
| Isolation Type | Optocoupler isolation between control and power circuits |
| Signal Input | Terminal or pin header (presoldered options) |
| Power Output | Terminal or direct wire connection |
| Board Dimensions | 23mm x 16mm (approx.) |
| Mounting Holes | Two 2mm diameter holes, 8mm spacing |
| Breadboard Compatible | Yes (with pin header option) |
| Operating Temperature | -20°C to 85°C (typical) |
| Package Quantity | 1 piece |
| Applications | Motor control, solenoid valve switching, high-current DC loads, PWM speed control, LED strips, heating elements |
| Compatibility | Arduino, ESP32, ESP8266, Raspberry Pi, and other 3V/5V microcontrollers |
Tutorials
COMPATIBLE HARDWARE
- Arduino boards (UNO, Mega, Nano, etc.) — 5V control signal for motor and load switching
- ESP32 development boards — 3.3V GPIO control with optocoupler isolation protection
- ESP8266 boards (NodeMCU, Wemos D1, etc.) — High-current load control with PWM support
- Raspberry Pi (all models) — GPIO control for motors and solenoid valves
- Arduino Nano ESP32 — Compact design with 3.3V logic compatibility
- Arduino UNO R4 — Motor control and PWM applications
- Raspberry Pi Pico — High-power switching with optocoupler protection
- DC Motors (up to 30V 161A) — Speed control and on/off switching
- Solenoid Valves — Automated valve control for water, air, and fluid systems
- LED Strips (high power) — Switching and dimming control
- Heating Elements — Temperature control applications
- Fans and Pumps — Speed regulation and on/off control
- Relay Modules — Enhanced isolation in automation systems
- Power Supply Modules — 12V, 24V DC power sources for high-current loads
- Any microcontroller with 3V or 5V digital output — PWM-capable GPIO pins recommended for speed control
