EL815(S)(TB)-V

Overview

The EL815(S)(TB)-V is a single-channel phototransistor output optocoupler manufactured by Everlight Electronics. It features a Darlington pair output configuration housed in a compact 4-SMD surface-mount package. The device provides high isolation voltage of 5000 Vrms between input and output terminals. Key electrical parameters include a maximum collector-emitter voltage of 35 V, a peak forward current rating of 60 mA, and a typical forward voltage of 1.2 V. The unit supports a maximum collector current of 80 mA with a power dissipation capacity of 200 mW. Operating temperature ranges from -55°C to +110°C.

Feature Summary

• High isolation voltage capability for safe signal transmission across potential differences
• Darlington output structure providing high current transfer ratio for sensitive detection
• Compact surface-mount packaging suitable for automated assembly processes

Applications

• Telephone sets and exchange equipment interface circuits
• General purpose signal isolation in industrial control systems
• Microprocessor system input/output isolation

Procurement Notes

Verify the specific suffix designation against the manufacturer's latest documentation to confirm pinout compatibility and package dimensions. Ensure that the selected variant matches the required thermal management specifications for the intended operating environment. Cross-reference the RoHS compliance status with current regulatory requirements for the target market. Confirm availability through authorized distributors as production status may vary.

Selection Notes

Consider the slow switching speed inherent to Darlington outputs when designing for high-frequency applications. Evaluate the required current transfer ratio margin to ensure reliable saturation under varying temperature conditions. Assess the physical footprint constraints of the 4-SMD package against the printed circuit board layout. Verify that the isolation voltage rating exceeds the transient voltages present in the application circuit.

Part Context

This component belongs to the EL815 family of transistor output optocouplers designed for general-purpose isolation tasks. The series offers various packaging options including DIP and SMD configurations to accommodate different manufacturing needs. These devices are commonly utilized in applications requiring galvanic isolation between low-voltage control circuits and higher-voltage load sides.

Replacement Considerations

Direct replacements should be sought within the same EL815 product family or equivalent Darlington output optocouplers from other manufacturers. Ensure that any substitute part maintains compatible pin assignments, isolation voltage ratings, and current transfer characteristics. Verify that the alternative component meets the same thermal and mechanical specifications required by the design.