EL816S1(I)(TU)-V

Overview

The EL816S1(I)(TU)-V is a single-channel transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features an infrared emitting diode optically coupled to an NPN phototransistor, providing galvanic isolation with a maximum insulation voltage of 5000 Vrms. The device supports a collector-emitter breakdown voltage of at least 80 V and operates within a temperature range of -55 °C to +110 °C. Key electrical parameters include a nominal current transfer ratio of 100%, a maximum forward current of 60 mA, and a maximum collector current of 50 mA. The component is housed in a compact surface-mount DIP-4 package and complies with RoHS standards.

Feature Summary

• High isolation voltage capability between input and output circuits
• Wide operating temperature range suitable for demanding environments
• Compact surface-mount package design for space-constrained applications
• Compliance with international safety approvals including UL and VDE

Applications

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

Procurement Notes

Verify the specific suffix configuration against the manufacturer's datasheet to ensure compatibility with required isolation ratings and packaging types. Confirm RoHS compliance status and relevant safety certifications such as UL or VDE approval numbers are documented for the specific batch. Ensure the ordering code matches the intended surface-mount variant and check for any recent product change notifications that may affect specifications or availability.

Selection Notes

Select this component when high isolation voltage and wide temperature operation are required for signal transmission. Consider the current transfer ratio and collector current limits to ensure adequate drive capability for the load. Verify that the surface-mount footprint aligns with the PCB layout constraints. Compare performance metrics against alternative optocouplers if stricter isolation distances or different output configurations are needed.

Part Context

This part belongs to the EL816 series of transistor output optocouplers from Everlight. The series is designed for general-purpose isolation applications, offering a balance of performance and reliability. The S1 suffix typically denotes a specific pinout or package variation within the broader EL816 family, distinguishing it from through-hole or other surface-mount variants.

Replacement Considerations

Direct substitutes may include other EL816 series variants with compatible pinouts and electrical characteristics. Verify that replacement parts maintain the same isolation voltage rating and current transfer ratio. Cross-reference with industry-standard equivalents if pin compatibility is critical.