EL817(S1)(C)(TA)

Overview

The EL817(S1)(C)(TA) is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode with a phototransistor in a 4-pin DIP package. Key electrical parameters include a collector-emitter voltage of 35V, a maximum forward current of 60mA, and a collector current of 50mA. The device offers a high isolation voltage of 5000Vrms and operates within a temperature range of -55°C to +110°C.

Feature Summary

• Provides electrical isolation between input and output circuits via optical coupling
• Features a compact 4-pin dual in-line package for through-hole mounting
• Ensures signal transmission integrity with high isolation voltage capability

Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops
• Communication equipment interface circuits

Procurement Notes

Verify the specific suffix TA against official Everlight documentation to confirm tape-and-reel packaging status. Confirm RoHS compliance and UL/VDE approval numbers as listed in the datasheet. Ensure the CTR bin matches application requirements before ordering.

Selection Notes

Select this component when through-hole mounting is required for robust mechanical stability. The 5000Vrms isolation rating suits applications with significant potential differences between circuits. Verify that the 50mA collector current meets load requirements.

Part Context

This part belongs to the EL817 series, a widely used family of transistor output optocouplers. The S1 designation typically indicates specific creepage distance or insulation characteristics compared to standard variants. The TA suffix denotes tape-and-reel packaging for automated assembly.

Replacement Considerations

FOC-817SC-F, PC817CS, ORPC-817SC-TP-F, AT817C-FeL-SE.