EL814-V

Overview

The EL814-V is a single-channel AC input phototransistor optocoupler manufactured by Everlight Electronics. It integrates two infrared emitting diodes connected in inverse parallel, optically coupled to an NPN phototransistor detector. The device features a 4-pin DIP package with through-hole mounting. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a typical forward voltage of 1.2 V, and a maximum forward current of 60 mA. It offers high isolation voltage of 5000 Vrms and operates within a temperature range of -55°C to 110°C.

Feature Summary

• AC input response capability via dual inverse-parallel infrared LEDs
• High isolation voltage between input and output circuits
• Wide operating temperature range for diverse environmental conditions

Applications

• AC mains detection and monitoring circuits
• Solid-state relay driver interfaces
• Microcontroller isolation for AC signal processing

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and compliance status. Confirm that the selected variant matches the required lead frame material and terminal finish specifications for your assembly process. Cross-reference the component marking with approved supplier documentation to prevent counterfeit parts. Ensure all regulatory approvals such as UL and VDE are valid for the intended market region.

Selection Notes

Select this component when AC input detection is required without additional rectification circuitry. The inverse-parallel LED configuration simplifies design by handling both half-cycles directly. Verify that the CTR requirements align with the load driving capabilities of the downstream phototransistor. Consider thermal dissipation limits if operating near the maximum junction temperature boundaries defined in the specification sheet.

Part Context

The EL814 series belongs to Everlight's family of compact optocouplers designed for general-purpose isolation. These devices utilize standard DIP packaging to facilitate easy integration into legacy and modern PCB layouts. The series emphasizes cost-effectiveness while maintaining robust isolation performance suitable for industrial and consumer electronics applications requiring reliable signal transmission across isolated boundaries.

Replacement Considerations

Public confirmed substitute part numbers: None.