MOC3021FVM

Triac, SCR Output Optoisolators Overview

The MOC3021FVM is a single-channel Triac and SCR output optoisolator manufactured by onsemi. It integrates an infrared emitting diode coupled to a hybrid triac capable of driving discrete triacs. The device features zero-crossing detection for reduced electromagnetic interference. It provides high isolation voltage of 7500Vpk between input and output circuits. The component is housed in a 6-pin surface-mount package designed for reliable operation in industrial control applications.

Triac, SCR Output Optoisolators Feature Summary

• Integrates an infrared LED with a hybrid triac output stage
• Features internal zero-crossing detection circuitry
• Provides high-voltage electrical isolation between input and output
• Designed for direct drive of discrete triacs in AC switching applications

Triac, SCR Output Optoisolators Applications

• Industrial motor control systems
• Solid-state relay modules
• AC power switching circuits
• Heater control units

Triac, SCR Output Optoisolators Procurement Notes

Verify current manufacturing status as the MOC3021FVM may be obsolete. Confirm availability through authorized distributors or check for valid substitute part numbers from onsemi. Ensure the replacement matches the required pinout, isolation voltage, and package type to maintain system integrity without redesign.

Triac, SCR Output Optoisolators Selection Notes

Select this component for applications requiring galvanic isolation in AC load control. Verify that the load current does not exceed the discrete triac's rating driven by the hybrid output. Ensure the input forward current stays within specified limits. Check thermal management requirements for the discrete triac connected to the output pins.

Triac, SCR Output Optoisolators Part Context

This part belongs to the MOC series of Triac and SCR output optoisolators. These devices are widely used for isolating low-voltage control logic from high-voltage AC mains. The FVM suffix typically denotes a specific surface-mount package variant within the family, differing from through-hole DIP versions like the MOC3021M.

Triac, SCR Output Optoisolators Replacement Considerations

Check onsemi documentation for direct replacements if MOC3021FVM is discontinued. Ensure substitutes match the 7500Vpk isolation and zero-crossing feature. Verify package compatibility for PCB footprint adherence.