IL4218-X019T

Overview

The IL4218-X019T is a phototriac output optocoupler manufactured by Vishay Semiconductor Opto Division. It features a gallium arsenide infrared emitting diode coupled to a triac output, providing electrical isolation for control circuits. The device offers an isolation voltage of 5300 Vrms and operates within a temperature range of -40°C to +100°C. Packaged in a surface-mount SOIC-6 extension, it supports low input current operation suitable for industrial applications requiring robust signal transmission across isolated boundaries.

Feature Summary

• Phototriac output configuration for AC load switching
• Low input current requirement for efficient drive
• High isolation voltage rating for safety compliance
• Surface-mount package design for automated assembly

Applications

• Solid-state relay (SSR) driver circuits
• Industrial process control systems
• AC motor control interfaces
• Power supply feedback loops

Procurement Notes

Verify the specific suffix X019T against the official Vishay datasheet to confirm packaging and reel specifications. Ensure compatibility with RoHS3 directives if required by your manufacturing standards. Cross-reference the component marking with the manufacturer's latest documentation to avoid counterfeit parts, as visual inspection alone may not distinguish genuine units from replicas.

Selection Notes

Select this component when high isolation voltage and low input current are critical for the application. Consider the SOIC-6 extension package dimensions for PCB layout constraints. Evaluate the peak forward current capabilities against the driving source limitations. Verify that the output triac holding current meets the minimum load requirements of the controlled AC circuit to ensure reliable switching performance.

Part Context

This part belongs to Vishay's family of phototriac output optocouplers designed for general-purpose isolation. It complements other devices in the series offering different output configurations or isolation ratings. The product line targets industrial and consumer electronics markets where reliable AC switching and galvanic isolation are necessary for system safety and noise immunity.

Replacement Considerations

Check Vishay's official substitution guide for direct replacements. Verify pinout compatibility and isolation voltage ratings before substituting with similar phototriac optocouplers from other manufacturers. Ensure thermal characteristics and package dimensions match the existing design constraints.