EL814S1(TU)

Overview

The EL814S1(TU) is a single-channel optocoupler featuring an AC/DC input infrared LED pair connected in inverse parallel, optically coupled to an NPN phototransistor detector. It provides electrical isolation with a maximum collector-emitter voltage of 80V and an isolation voltage of 5000 Vrms. The device supports a maximum DC forward current of 60 mA and operates within a temperature range of -55°C to 110°C. It utilizes a surface-mount 4-pin package configuration.

Feature Summary

• Dual infrared emitting diodes connected in inverse parallel enable direct AC input response without external rectification components.
• High isolation voltage capability ensures robust safety between input and output circuits.
• Compact surface-mount packaging facilitates automated assembly and space-constrained designs.

Applications

• Digital logic signal transmission and level shifting
• Power supply control and switching circuits
• Electrical insulation isolation between systems

Procurement Notes

Verify the specific suffix designation against manufacturer documentation to confirm exact packaging type and compliance status. Ensure the selected variant matches the required surface-mount footprint and lead finish specifications for the intended manufacturing process.

Selection Notes

Select this component when AC input compatibility is required alongside high isolation standards. The inverse-parallel LED configuration simplifies circuit design by eliminating external rectifiers. Verify that the 80V output voltage rating meets the load requirements of the downstream phototransistor application.

Part Context

This part belongs to the EL814 series of transistor-output optocouplers manufactured by Everlight Electronics. The series is characterized by its ability to handle both AC and DC inputs due to the dual-diode structure, distinguishing it from standard single-diode optocouplers like the EL817 series which require DC inputs.

Replacement Considerations

EL814S1(A)(TU)