EL817(S1)(TD)-V

Overview

The EL817(S1)(TD)-V is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode and an NPN phototransistor in a compact surface-mount package. The device provides high isolation voltage of 5000 Vrms between input and output terminals, with a creepage distance exceeding 7.62 mm. Key electrical parameters include a collector-emitter breakdown voltage of 35 V, maximum forward current of 60 mA, and maximum collector current of 50 mA. It operates within a temperature range of -55 °C to +110 °C and complies with RoHS standards.

Feature Summary

• High isolation voltage capability of 5000 Vrms ensures safe signal transmission across isolated circuits.
• Compact small outline surface-mount package design facilitates automated assembly and space-constrained layouts.
• Wide operating temperature range supports reliable performance in demanding thermal environments.

Applications

• Signal isolation in industrial control systems
• Switching power supply feedback loops
• Microcontroller interface circuits

Procurement Notes

Verify the specific suffix (TD) against the manufacturer's official datasheet to confirm pin configuration and tape-and-reel specifications. Ensure compliance requirements such as RoHS and UL/VDE approvals match project needs. Cross-reference part numbers carefully as minor suffix variations can indicate different packaging or material compositions.

Selection Notes

Select this component when surface-mount technology is required for galvanic isolation. Consider the 5000 Vrms isolation rating and 110 °C max operating temperature for robustness. Verify that the NPN phototransistor output characteristics align with the load requirements of the receiving circuitry.

Part Context

This part belongs to the EL817 series of transistor output optocouplers from Everlight. The series is widely used for general-purpose isolation applications. The specific variant includes surface-mount packaging options designed for modern PCB assembly techniques while maintaining the electrical performance of traditional through-hole equivalents.

Replacement Considerations

Check for direct substitutes like EL817(S1)(TA)-V or EL817(S1)(TB)-V if different reel sizes are needed. Verify pinout compatibility before substituting with other SMD optocouplers from different manufacturers.

FAQ

What is the isolation voltage rating?

The device has an isolation voltage of 5000 Vrms.

Is the component lead-free?

Yes, it is RoHS compliant and lead-free.