MOC3033VM

Triac, SCR Output Optoisolators Overview

The MOC3033VM is a six-pin DIP zero-crossing triac driver output optocoupler manufactured by onsemi, formerly Fairchild Semiconductor. It features an integrated photo-triac output with a peak off-state voltage of 250 V and an isolation voltage of 4170 Vrms. The device includes a built-in zero-crossing circuit that triggers the triac when the line voltage is near zero, minimizing electrical noise. Key electrical parameters include a forward current of 60 mA, a typical dv/dt rating of 2000 V/µs, and an operating temperature range from -40°C to +85°C.

Triac, SCR Output Optoisolators Feature Summary

• Integrates a zero-crossing detection circuit to reduce electromagnetic interference during switching.
• Provides high-voltage isolation between input logic and output power stages.
• Simplifies AC power control for low-power triac applications.

Triac, SCR Output Optoisolators Applications

• Logic control of 115 VAC power systems
• Solid-state relay drivers
• Lighting dimmer circuits

Triac, SCR Output Optoisolators Procurement Notes

Verify component authenticity due to discontinued status. Check datasheet revisions as Fairchild Semiconductor specifications may differ from current onsemi documentation. Confirm package integrity and pinout compatibility before integration into existing designs.

Triac, SCR Output Optoisolators Selection Notes

Select this component for isolated AC switching where noise reduction is critical. Ensure the load current does not exceed the internal triac capabilities. Consider thermal management if operating at maximum ambient temperatures within the specified range.

Triac, SCR Output Optoisolators Part Context

This part belongs to the MOC3033M series of zero-crossing triac driver optocouplers. It is designed for simple interface between microcontrollers and AC mains loads. The device replaces older discrete isolation solutions with a compact integrated approach.

Triac, SCR Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult manufacturer obsolescence notices for direct replacements.