EL817(S)(C)(TU)-G

Overview

The EL817(S)(C)(TU)-G is a single-channel transistor-output optocoupler manufactured by Everlight Electronics. It features an infrared emitting diode optically coupled to an NPN phototransistor detector in a surface-mount 4-SMD gull-wing package. The device provides high isolation voltage of 5000 Vrms and operates within a temperature range of -55°C to +110°C. Key electrical parameters include a collector-emitter breakdown voltage of 35V, maximum forward current of 60mA, and a typical current transfer ratio ranging from 200% to 400% at 5mA input current.

Feature Summary

• High isolation voltage capability between input and output circuits
• Compact surface-mount gull-wing package design for automated assembly
• Wide operating temperature range suitable for industrial environments
• Compliant with lead-free and RoHS environmental standards

Applications

• Signal isolation in digital communication interfaces
• Switching power supply feedback loops
• Microcontroller input/output isolation
• Solid-state relay driver circuits

Procurement Notes

Verify the specific CTR bin designation associated with the suffix (C) against the manufacturer's latest datasheet, as binning affects performance ranges. Confirm the exact package outline dimensions and soldering profile requirements for the 4-SMD gull-wing configuration during PCB layout. Ensure compliance with relevant safety certifications such as UL or VDE if required for end-product approval.

Selection Notes

Select this component when surface-mount technology is required for space-constrained designs needing galvanic isolation. The NPN phototransistor output is suitable for standard logic interfacing. Consider the thermal management capabilities given the wide operating temperature range. Verify that the 5000 Vrms isolation rating meets the safety requirements of the application environment.

Part Context

This part belongs to the EL817 series of optocouplers, which are widely used for general-purpose signal isolation. The series includes various packaging options including DIP and SMD variants. The EL817(S)(C)(TU)-G specifically denotes the surface-mount version with a particular current transfer ratio bin and lead-free compliant manufacturing process.

Replacement Considerations

Direct pin-compatible replacements may include other EL817 series variants from Everlight or equivalent transistor-output optocouplers from manufacturers like Vishay or Sharp. Ensure replacement parts match the 4-SMD gull-wing package and meet the same isolation voltage and current transfer ratio specifications.