FOD4208SD

Triac, SCR Output Optoisolators Overview

The FOD4208SD is a single-channel optoisolator from onsemi, featuring an infrared emitting diode coupled to a hybrid random phase triac. It provides 5000Vrms isolation voltage and supports up to 800V output. The device is designed for snubberless operation in AC power control applications.

Triac, SCR Output Optoisolators Feature Summary

• Integrates an infrared LED with a hybrid random phase triac for robust AC switching
• Supports snubberless operation to simplify circuit design and reduce component count
• Provides high isolation voltage of 5000Vrms between input and output circuits

Triac, SCR Output Optoisolators Applications

• AC motor speed control systems
• Solid-state relay (SSR) designs
• General-purpose AC power switching

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific ordering suffix 'SD' corresponds to the SMD tape-and-reel packaging configuration. Confirm that the required isolation voltage and output current ratings align with the target application's electrical requirements before finalizing procurement.

Triac, SCR Output Optoisolators Selection Notes

Select this component when snubberless triac drive capability is required for random phase loads. Ensure the PCB layout accommodates the 6-SMD package dimensions and maintains adequate creepage distances to support the 5000Vrms isolation rating effectively.

Triac, SCR Output Optoisolators Part Context

This part belongs to the FOD420 series, which includes variants like FOD420, FOD4216, and FOD4218. These devices share a common architecture combining an IR LED with a hybrid triac, differentiated primarily by packaging options and specific electrical characteristics.

Triac, SCR Output Optoisolators Replacement Considerations

Direct substitutes within the same family include FOD420, FOD4216, and FOD4218, provided pinout compatibility and package type match the existing design constraints.