This BTA16 AC Solid-State Switch Module allows you to control high-voltage AC loads (up to 220V) using a low-voltage DC signal (3.3–5V) — perfect for Arduino, ESP32, STM32, or other microcontroller-based projects.
It is based on the BTA16-600B bidirectional triac and features optical isolation for safe and reliable switching. The module is ideal for controlling AC lamps, heating elements, or resistive loads, and an optional zero-cross detection version supports phase control and dimming.
Safety Note:
This module handles high-voltage AC — only experienced users familiar with electrical safety should operate it. Ensure proper insulation and safety precautions. Misuse or unsafe operation may result in damage or injury.
Features
Based on high-quality BTA16-600B Triac
Supports AC loads up to 16A / 220V
Optocoupler isolation for safety and reliability
Optional zero-cross detection version for dimming or phase control
Compatible with Arduino / ESP32 / STM32 / Raspberry Pi
Ideal for resistive loads such as lamps and heaters
Compact PCB design for embedded integration
Specifications
| Parameter | Description |
|---|
| Load Type | AC load (up to 220V) |
| Triac Model | BTA16-600B |
| Effective Current | 16A |
| Peak Current (ItSM, 50Hz) | 160A |
| Control Voltage | DC 3.3V – 5V |
| Isolation | Optocoupler isolation |
| Operating Temperature | -40°C to +125°C |
| PCB Size (Standard) | 37 × 22 × 21 mm |
| PCB Size (Zero-Cross Type) | 41.5 × 33 × 21 mm |
Applications
AC lighting dimming (incandescent, halogen)
Heater and thermostat control
Smart home automation and power switching
Industrial AC control projects
Important Notes
Not suitable for LED lamps, motors, or inductive loads.
If using with low-current loads, remove the anti-interference capacitor to ensure proper operation.
When used for high-power applications (>200W), ensure additional heat dissipation (e.g., add a heatsink or cooling fan).
