MOC3021X

Triac, SCR Output Optoisolators Overview

The MOC3021X is a zero-crossing optoisolator manufactured by Isocom Components. It integrates a Gallium Arsenide infrared emitting diode with a light-activated silicon bilateral triac switch. The device provides electrical isolation between control and load circuits, rated at 5300Vrms for one channel. Key electrical parameters include a maximum forward current of 50mA, a reverse voltage of 6V, total power dissipation of 330mW, and an input trigger current of 15mA. All electrical parameters are 100% tested during production.

Triac, SCR Output Optoisolators Feature Summary

• Zero-crossing detection circuitry minimizes electromagnetic interference during switching operations.
• High isolation voltage rating ensures safe separation between low-voltage control logic and high-voltage AC loads.
• Integrated gate structure simplifies interface requirements for driving the output triac.

Triac, SCR Output Optoisolators Applications

• Solid-state relay driver circuits
• AC motor speed control systems
• Lighting dimmer applications

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific manufacturer designation when sourcing, as component availability may vary across different distributors. Confirm that the received parts match the exact model number to ensure correct zero-crossing functionality. Check datasheets for any updates regarding pin configurations or thermal characteristics before finalizing procurement plans.

Triac, SCR Output Optoisolators Selection Notes

Select this component when zero-crossing operation is required to reduce noise in AC power control applications. Ensure the load voltage and current ratings exceed the system requirements while remaining within the device's absolute maximum limits. Consider the 6-DIP package dimensions for PCB layout compatibility.

Triac, SCR Output Optoisolators Part Context

This part belongs to the MOC302_ series of optically coupled isolators. The series utilizes a Gallium Arsenide infrared LED coupled with a light-activated silicon bilateral triac. This configuration is standard for isolated AC switching applications requiring minimal electromagnetic interference generation.

Triac, SCR Output Optoisolators Replacement Considerations

Compatible substitutes within the same family include the MOC3022X. Verify that alternative part numbers maintain the zero-crossing feature and identical pinout configuration to ensure direct replacement without circuit modification.