FODM3023

Triac, SCR Output Optoisolators Overview

The FODM3023 is a random-phase triac driver optocoupler manufactured by onsemi. It features a single channel with a photo-triac output and operates within a temperature range of -40°C to +85°C. The device provides an isolation voltage of 3750 Vrms and supports a peak repetitive off-state voltage of 400V. It utilizes a 4-pin Mini-Flat package for surface mount applications.

Triac, SCR Output Optoisolators Feature Summary

• Integrates a gallium arsenide infrared LED emitter with a silicon photo-triac detector for signal transmission.
• Designed for non-zero-crossing operation to enable precise phase control in AC power switching applications.
• Provides high electrical isolation between input and output circuits to protect low-voltage control logic.

Triac, SCR Output Optoisolators Applications

• Solid state relays
• Motor speed controls
• Lighting dimmers

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix (e.g., NF098) against the manufacturer datasheet to confirm pinout compatibility and packaging type. Ensure the selected variant meets the required isolation voltage ratings for the target circuit design before finalizing procurement orders.

Triac, SCR Output Optoisolators Selection Notes

Select this component when non-zero-crossing triac triggering is required for phase-angle control. Compare the 4-pin Mini-Flat footprint against available PCB space constraints. Verify that the 400V blocking voltage rating exceeds the maximum line voltage peaks in the application environment.

Triac, SCR Output Optoisolators Part Context

This part belongs to the MOC/FOD series of triac driver optocouplers from onsemi. It serves as a bridge between microcontroller logic and high-power AC loads, replacing mechanical relays in compact designs where size and switching speed are critical factors.

Triac, SCR Output Optoisolators Replacement Considerations

Check for direct replacements such as the MOC3021 or MOC3023 variants, ensuring pinout alignment and voltage ratings match the existing board layout requirements without redesigning the schematic.

Triac, SCR Output Optoisolators FAQ

Does the FODM3023 include a zero-crossing detection circuit?

No, the FODM3023 is a random-phase device designed for non-zero-crossing operation, allowing for phase-angle control rather than soft-start switching.

What is the maximum peak repetitive off-state voltage?

The device supports a peak repetitive off-state voltage (VDRM) of 400V.