🔦 MOC3021 - Optoisolator with Triac Driver for AC Load Switching 🔦
The MOC3021 is an opto-isolated triac driver IC designed to safely control AC loads like motors, lamps, and resistive heaters using low-voltage digital signals. It contains an internal LED that activates a light-sensitive triac, ensuring full electrical isolation between control and power circuits.
✅ Technical Specifications:
- Isolation Type: LED + Triac Output
- Max Output Voltage: 400V AC
- Input Current (LED): 5–15 mA typical
- Trigger Current: 5mA typical
- Response Time: ~25 µs
- Operating Temperature: -40°C to 100°C
- Package Type: DIP-6
🔹 Features:
- Provides galvanic isolation between logic and AC mains
- Safely controls household appliances and AC-powered devices
- Solid-state switching (no mechanical parts) for high reliability
- Ideal for lamp dimming, fan control, and heating systems
- Works well in industrial automation and home automation systems
📌 Common Applications:
- Switching AC loads using microcontrollers
- Arduino-based home automation projects
- Smart light and fan control
- Electrical isolation in control circuits
- Industrial interface between logic and power
🔹 Approximate Weight: 5 grams
