EL816(B)-V

Overview

The EL816(B)-V is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode with an NPN phototransistor detector in a compact 4-pin DIP package. The device provides high isolation voltage of 5000 Vrms between input and output circuits. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a maximum forward current of 60 mA, and a maximum collector current of 50 mA. It operates within a temperature range of -55°C to +110°C.

Feature Summary

• High isolation voltage capability for safe signal transmission across potential barriers
• Compact 4-pin DIP packaging suitable for space-constrained designs
• Wide operating temperature range ensuring reliability in harsh environments
• Compliant with international safety standards including UL and VDE approvals

Applications

• Industrial control systems requiring galvanic isolation
• Signal isolation in microprocessor-based circuits
• Power supply feedback loops for noise immunity
• Solid-state relay driver interfaces

Procurement Notes

Verify the specific suffix (B) against the manufacturer's latest datasheet to confirm pinout configuration and lead spacing variations. Ensure compliance with RoHS directives if required by your assembly process. Cross-reference the part number with authorized distributors to confirm current availability status, as component lifecycles may change. Request official certification documents for safety approvals such as UL and VDE before finalizing procurement decisions.

Selection Notes

Select this component when high isolation voltage and robust thermal performance are critical. The NPN phototransistor output is suitable for digital switching applications. Consider the 4-pin DIP form factor for through-hole mounting requirements. Evaluate the 50 mA collector current limit against load requirements. Verify that the 5000 Vrms isolation rating meets the safety standards of the target application environment.

Part Context

The EL816 series represents a family of general-purpose optocouplers widely used in industrial and consumer electronics. The EL816(B)-V variant specifically denotes a version with defined mechanical dimensions and lead configurations within this series. These devices are designed to replace older models while maintaining compatibility with standard DIP footprints. The series is known for its reliability in isolating low-voltage control signals from higher-voltage power circuits.

Replacement Considerations

Direct replacements should be sought from the same EL816 series or equivalent transistor-output optocouplers with matching 4-pin DIP packages. Verify that substitute parts maintain the 5000 Vrms isolation rating and similar CTR specifications. Check for identical pinout assignments to ensure board compatibility without redesign.