FOD4118

Triac, SCR Output Optoisolators Overview

The FOD4118 is a high dv/dt zero-crossing triac driver optocoupler manufactured by onsemi. It features a 5000Vrms isolation voltage and operates within a -55°C to 100°C temperature range. Key electrical parameters include a maximum turn-on time of 60µs, a minimum static dv/dt of 10kV/µs, and an off-state voltage rating of 800V. The device utilizes a standard 6-DIP package with through-hole mounting.

Triac, SCR Output Optoisolators Feature Summary

• Integrates zero-cross detection circuitry for precise phase control timing
• Provides high immunity to transient noise via elevated static dv/dt rating
• Utilizes efficient infrared LED technology for improved trigger sensitivity

Triac, SCR Output Optoisolators Applications

• Solid-state relay (SSR) driver circuits
• AC power switching applications
• Motor control systems requiring isolated triac triggering

Triac, SCR Output Optoisolators Procurement Notes

Verify component status as the FOD4118T variant is listed as obsolete. Confirm availability of active alternatives such as the FOD4118TV. Ensure sourcing channels provide valid manufacturer documentation. Check for process change notifications regarding packaging or material composition before finalizing procurement decisions.

Triac, SCR Output Optoisolators Selection Notes

Select this component when high dv/dt noise immunity and zero-crossing functionality are required in AC power control designs. The 6-DIP package suits through-hole PCB layouts. Consider the 800V off-state voltage rating for appropriate load handling. Verify that the 1.3mA maximum trigger current aligns with the driving interface capabilities.

Triac, SCR Output Optoisolators Part Context

The FOD4118 belongs to the FOD4100 series of high-performance triac drivers. It shares architectural similarities with the FOD4116 but offers specific zero-crossing characteristics. This family is designed for robust isolation in industrial and consumer AC power management applications requiring reliable triac gating.

Triac, SCR Output Optoisolators Replacement Considerations

The FOD4118TV is a confirmed substitute part number from onsemi. Verify pinout compatibility and parameter equivalence before integration. Other manufacturers may offer functional equivalents, but direct substitution requires careful datasheet comparison.