EL817(S1)(A)(TB)-VG

Overview

The EL817(S1)(A)(TB)-VG is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features an NPN phototransistor output and provides high isolation voltage of 5000 Vrms between input and output circuits. The device utilizes a surface-mount SMD package configuration, specifically the Type II tape and reel format indicated by the suffixes. It operates within a temperature range of -55°C to 110°C and complies with RoHS standards. Key electrical characteristics include a minimum current transfer ratio of 50% at IF=5mA and VCE=5V, with a collector-emitter breakdown voltage of 35V.

Feature Summary

• Provides galvanic isolation between input and output circuits using an infrared LED and NPN phototransistor pair.
• Features a compact surface-mount package design suitable for automated assembly processes.
• Complies with international safety certification standards including UL, VDE, and SEMKO approvals.

Applications

• Signal isolation in industrial control systems
• Interface circuits for microcontrollers and logic devices
• Power supply feedback loops

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to market availability variations. Confirm specific packaging type and reel specifications match project requirements. Check for updated lifecycle status as components may be subject to discontinuation notices. Ensure compliance with regional regulatory standards such as RoHS before integration into final products.

Selection Notes

Select this component when surface-mount technology is required for space-constrained designs. Consider the 5000 Vrms isolation rating for applications requiring robust noise immunity. Verify that the NPN phototransistor output characteristics align with downstream circuit loading requirements. Evaluate thermal management needs given the operating temperature range limits.

Part Context

This part belongs to the EL817 series of photocouplers from Everlight Electronics. The series offers various package options including DIP and SMD configurations. The specific suffix indicates a surface-mount variant with tape and reel packaging. This series is widely used for general-purpose signal isolation tasks across multiple industries.

Replacement Considerations

Consult official Everlight documentation for qualified substitute part numbers. Verify pinout compatibility and electrical parameter equivalence before substitution. Cross-reference with industry-standard equivalents if available, ensuring all safety certifications remain valid for the application.