EL8171S1(TU)-G

Overview

The EL8171S1(TU)-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode with a phototransistor detector in a surface-mount package. The device provides electrical isolation with a rated isolation voltage of 5000 Vrms and a creepage distance exceeding 7.62 mm. Key electrical parameters include a maximum forward current of 60 mA, a collector-emitter breakdown voltage of 35 V, and a maximum collector current of 50 mA. The component operates within a temperature range of -55°C to +110°C and features a typical rise time of 9 µs.

Feature Summary

• Integrates an infrared LED coupled to a phototransistor for signal transmission
• Provides high-voltage electrical isolation between input and output circuits
• Designed for surface-mount technology applications requiring compact form factors
• Compliant with RoHS standards and free from lead content

Applications

• Industrial control systems requiring signal isolation
• Consumer electronics with safety isolation requirements
• Power supply feedback loops
• Communication interface isolation

Procurement Notes

Verify the specific suffix configuration against official Everlight documentation to ensure correct binning and packaging specifications. Confirm that the procurement source provides valid datasheets matching the part number exactly. Check for regional distribution restrictions or availability constraints before finalizing orders. Ensure compliance with environmental regulations such as RoHS and REACH requirements applicable to your region.

Selection Notes

Select this component when a single-channel transistor output optocoupler is required for low-power signal isolation. Consider the 5000 Vrms isolation rating for safety-critical applications. Evaluate the operating temperature range and package dimensions against board space constraints. Compare the current transfer ratio and switching speed requirements with alternative models if higher performance is needed.

Part Context

This part belongs to the EL817 series of optocouplers, which are widely used for general-purpose isolation. The 'S1' designation typically indicates a specific pin pitch or package variation compared to standard DIP versions. The 'TU' suffix often denotes tape and reel packaging suitable for automated assembly processes. This series is recognized for its reliability in various industrial and commercial electronic designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with direct replacements by comparing pinout configurations, isolation voltages, and electrical characteristics. Consult manufacturer cross-reference guides for potential alternatives if this specific part number is unavailable.