FOD410

Triac, SCR Output Optoisolators Overview

The FOD410 is a 6-pin DIP zero-cross triac driver optoisolator manufactured by Fairchild Semiconductor. It integrates an infrared emitting diode with a zero-crossing detection circuit and a triac output stage, providing galvanic isolation of 5000 Vrms. The device is designed for snubberless operation in AC power control applications, ensuring reliable switching at the mains voltage zero-crossing point to minimize electromagnetic interference.

Triac, SCR Output Optoisolators Feature Summary

• Integrated zero-crossing detection circuitry for precise AC phase control
• Snubberless operation capability reducing external component count
• High isolation voltage rating of 5000 Vrms between input and output

Triac, SCR Output Optoisolators Applications

• Solid-state relays (SSRs)
• AC motor speed controllers
• Lighting dimmer circuits

Triac, SCR Output Optoisolators Procurement Notes

Verify current production status as the FOD410 may be discontinued or obsolete per available documentation. Confirm package integrity and lead plating specifications against RoHS requirements if applicable. Source only from authorized distributors to ensure authenticity and traceability of the Fairchild Semiconductor part.

Triac, SCR Output Optoisolators Selection Notes

Select this component for applications requiring inherent zero-crossing switching to reduce electrical noise. Ensure the load current does not exceed the internal triac ratings. Consider thermal management for high-duty-cycle operations. Verify that the 5000 Vrms isolation meets system safety standards.

Triac, SCR Output Optoisolators Part Context

This part belongs to Fairchild's family of triac and SCR output optoisolators. It is specifically engineered for AC power switching where low EMI is critical. The 6-DIP package facilitates through-hole mounting on standard PCB layouts for industrial and consumer AC control modules.

Triac, SCR Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not provided in the source data. Consult manufacturer cross-reference guides for equivalent zero-cross triac drivers.