MOC3083 Optoisolators Triac Driver Ic

The MOC3083 Optoisolator Triac Driver IC is a specialized device that combines an infrared LED and a photodiode driver to control TRIACs while providing galvanic isolation between input and output. With zero-cross detection, it ensures switching occurs when the AC signal is at zero voltage, reducing electrical noise and improving efficiency.

The MOC3083 is widely used in home automation, industrial AC load control, solid-state relays, motor control, and dimmer circuits, where safety and reliability are critical.

🔹 Applications

• AC light dimmer circuits

• Solid-state relay designs

• Motor speed control (AC motors)

• Fan regulators and home appliances

• Industrial automation (AC switching)

• Home automation and IoT-based power control

• EMI-sensitive applications (zero-cross reduces noise)

🔹 Precautions

• Do not exceed input LED forward current (max 50mA)

• Ensure proper snubber circuit across the Triac for inductive loads

• Maintain adequate PCB clearance for AC voltage safety

• Use heat sinks with external Triacs for high-current applications

• Prevent electrostatic discharge (ESD) damage

• Operate within recommended temperature range (–40°C to +85°C)

🔹 Technical Specifications

• IC Type: Zero-Cross Optoisolator Triac Driver

• Package: DIP-6

• Isolation Voltage: 7500 Vrms

• Input LED Forward Voltage: 1.2V (typical)

• Input LED Forward Current: 10mA – 50mA

• Peak Output Current: 300mA (pulsed)

• Zero-Crossing Feature: Yes

• Operating Temperature: –40°C to +85°C

• Applications: AC load switching, dimmers, relays, motor control

📹 Tutorial Video

Watch MOC3083 Triac Driver Tutorial

🔹 Related Categories

• IC’s

• Electronics Components

• Tools and Accessories

• Power Supplies

🔹 Summary

The MOC3083 Optoisolator Triac Driver IC provides safe AC load control with zero-cross switching, ensuring noise-free and reliable operation. With high isolation and easy interfacing to microcontrollers, it is perfect for dimmer circuits, motor drivers, relays, and automation systems. An essential component for IC’s and Electronics Components collections.