FOD420SD

Triac, SCR Output Optoisolators Overview

The FOD420SD is a single-channel optoisolator manufactured by onsemi, featuring a Triac and SCR output configuration. It utilizes a surface-mount DIP-6 package to provide electrical isolation between input and output circuits. The device supports random phase triggering, allowing for precise control of AC power loads without the need for external snubber networks. Key electrical specifications include a maximum forward voltage of 1.5V, a typical rise time of 60µs, and a typical fall time of 52µs. It offers an isolation voltage rating of 5000 Vrms and can handle a maximum input current of 30 mA.

Triac, SCR Output Optoisolators Feature Summary

• Random phase triac triggering capability
• Snubberless operation design
• High isolation voltage rating

Triac, SCR Output Optoisolators Applications

• AC motor speed control systems
• Solid-state relay drivers
• Industrial process control interfaces

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix designation when ordering, as variations such as FOD420SDV may exist with different packaging or reel configurations. Confirm that the required isolation voltage and switching speeds align with the target application's safety standards. Ensure compatibility with the PCB footprint for the 6-pin SMD package before finalizing component selection.

Triac, SCR Output Optoisolators Selection Notes

Select this component for applications requiring galvanic isolation in AC power control circuits where snubber components are undesirable. The random phase feature makes it suitable for dimming and phase-angle control applications. Consider the thermal performance of the SMD package and ensure adequate spacing for the high isolation voltage requirements.

Triac, SCR Output Optoisolators Part Context

This part belongs to the family of Triac and SCR output optoisolators from onsemi. These devices are designed to interface low-voltage logic circuits with high-voltage AC power stages. The FOD420SD specifically addresses the need for reliable triggering in random phase applications, distinguishing it from zero-crossing variants.

Triac, SCR Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.