EL357NB(TA)-G

Overview

The EL357NB(TA)-G is a single-channel phototransistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode and an NPN phototransistor in a compact SOP-4 surface-mount package with a 2mm body thickness. The device provides high electrical isolation with a rated voltage of 3750 Vrms. Key electrical parameters include a collector-emitter saturation voltage of 0.1V at 1mA/20mA, a forward voltage of 1.2V, and a reverse voltage of 6V. The unit supports a maximum output current of 80mA and operates within a temperature range of -55°C to +110°C.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using optical coupling technology.
• Features a compact SOP-4 surface-mount package designed for dense PCB layouts.
• Ensures stable operation across a wide industrial temperature range from -55°C to +110°C.

Applications

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

Procurement Notes

Verify the specific suffix (TA) against the manufacturer's latest datasheet to confirm tape-and-reel packaging specifications. Ensure the component meets required safety certifications such as UL or CSA if used in regulated applications. Cross-reference the part number with official Everlight documentation to confirm current production status and availability constraints.

Selection Notes

Select this component when a low-profile SMD optocoupler is needed for galvanic isolation in space-constrained designs. The 3750 Vrms isolation rating suits applications involving significant potential differences between circuits. Verify that the 80mA output current capability aligns with the load requirements of the receiving side of the isolated circuit.

Part Context

This component belongs to the EL357N-G series of transistor output optocouplers. The series is characterized by its small form factor and reliability for general-purpose isolation tasks. Everlight utilizes standard semiconductor processes to ensure consistent current transfer ratios and switching speeds across the product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's cross-reference guide for verified alternatives.