EL817(S)(B)(TD)-V

Overview

The EL817(S)(B)(TD)-V is a high-speed optocoupler manufactured by Everlight Electronics. It integrates an AlGaAs infrared emitting diode with a high-speed integrated output transistor on a single chip, providing excellent common-mode rejection and fast switching speeds. The device features a wide operating temperature range and is designed for applications requiring reliable signal isolation. Key electrical characteristics include a high current transfer ratio and low input forward voltage drop, ensuring efficient operation in various digital and analog circuits.

Feature Summary

• High-speed response time for efficient signal transmission
• Integrated AlGaAs LED and phototransistor for compact design
• Excellent common-mode rejection ratio for noise immunity
• Wide operating temperature range for diverse environmental conditions

Applications

• Digital communication interfaces
• Signal isolation in industrial control systems
• Power supply feedback loops
• Microprocessor input/output isolation

Procurement Notes

Verify the specific suffix codes (S, B, TD) against the manufacturer's datasheet to ensure correct packaging and tape-and-reel specifications. Confirm the lead time and availability directly with authorized distributors or the manufacturer, as these can vary based on production schedules and regional demand. Ensure compliance with RoHS and other relevant regulatory standards required for your application.

Selection Notes

Consider the required isolation voltage and current transfer ratio when selecting this component. Evaluate the package type and pin configuration to ensure compatibility with your PCB layout. Check the maximum ratings for input current and output voltage to prevent overstress during operation. Compare performance metrics with alternative optocouplers if higher speed or different isolation levels are needed.

Part Context

This part belongs to Everlight's EL817 series of optocouplers, known for their reliability and performance in isolation applications. The series offers various configurations to suit different circuit requirements, including standard and high-speed variants. The EL817 series is widely used in consumer electronics, industrial automation, and telecommunications due to its robust design and cost-effectiveness.

Replacement Considerations

Check for direct replacements like the PC817 or IL300 series, ensuring matching pinouts and electrical characteristics. Verify that any substitute component meets the same isolation voltage and speed requirements. Consult the manufacturer's cross-reference guide for approved alternatives to ensure compatibility and performance equivalence.