MOC3021 IC Optocoupler SMD Surface Mount

Overview Of This MOC3021 IC Optocoupler SMD Surface Mount

The MOC3021 is an optocoupler integrated circuit (IC) that consists of a gallium arsenide infrared emitting diode (LED) and a light-sensitive silicon bilateral switch (SCR). It is designed for use in applications where electrical isolation is required between input and output circuits.

Applications:

The MOC3021 optocoupler is commonly used in various applications, including:

• AC power control circuits
• Solid-state relays
• Dimmer switches
• Motor control circuits
• Lighting control systems
• Isolated communication interfaces
• Industrial automation

Development:

When developing with the MOC3021, designers typically follow these steps:

1. Circuit Design: Design the circuit to incorporate the MOC3021, ensuring proper connections and isolation between input and output circuits.
2. Component Selection: Choose supporting components such as resistors, capacitors, and diodes according to the application requirements and datasheet recommendations.
3. PCB Layout: Design the printed circuit board (PCB) layout to accommodate the MOC3021 and other components while ensuring proper signal integrity and isolation.
4. Prototyping: Build a prototype circuit on a breadboard or prototyping board to verify functionality and performance.
5. Testing and Validation: Test the prototype circuit under various operating conditions to ensure proper operation and compliance with specifications.
6. Integration: Integrate the MOC3021 into the final product design, incorporating any necessary modifications based on testing results.

Specifications:

• Isolation Voltage: 7500 Vrms
• LED Forward Current: 60 mA
• Trigger Current (Ift): 5 mA
• Maximum Repetitive Peak Off-state Voltage (Vdrm): 400 V
• Maximum Repetitive Peak Reverse Voltage (Vrrm): 6 V
• Maximum On-state Voltage (Vtm): 1.6 V
• Maximum Holding Current (Ih): 5 mA
• Operating Temperature Range: -40°C to 85°C
• Package Type: Surface Mount Device (SMD)

Features:

• Optically coupled input/output for electrical isolation
• Suitable for AC voltage control applications
• Phototriac output for high sensitivity and reliability
• Low input trigger current for efficient operation
• High isolation voltage for safety and reliability
• Surface mount package for compact and space-saving designs
• Wide operating temperature range for versatility
• RoHS-compliant and lead-free construction for environmental compliance

Data Sheet