EL357ND(TA)-G

Overview

The EL357ND(TA)-G is a single-channel phototransistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode and a phototransistor detector within a compact SOP-4 surface-mount package. The device provides electrical isolation between input and output circuits with a rated isolation voltage of 3750 Vrms. Key electrical parameters include a maximum collector-emitter saturation voltage of 100mV at specified test conditions, a DC reverse voltage rating of 6V, and a load voltage capacity of 80V. The unit supports a continuous forward current of 50mA and features a total power dissipation limit of 200mW. Operating characteristics encompass a rise time of 3µs and a fall time of 4µs, ensuring reliable signal transmission across a wide temperature range from -55°C to +110°C.

Feature Summary

• Provides high-voltage electrical isolation via integrated infrared LED and phototransistor architecture
• Utilizes compact four-pin surface-mount packaging for dense PCB layout compatibility
• Ensures stable operation across extended industrial temperature ranges

Applications

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

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact binning or variant specifications. Confirm component availability status as distribution channels may list obsolete or limited stock items. Ensure compliance with relevant safety certifications required for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when high isolation voltage and compact form factor are primary design constraints. Evaluate the current transfer ratio requirements against the specific gain needs of the receiving circuit. Consider the thermal management capabilities of the SOP-4 package relative to the expected power dissipation in the final assembly.

Part Context

This component belongs to the EL357N-G series of transistor output optocouplers designed for general-purpose isolation applications. The series emphasizes reliability and compactness, catering to modern electronic devices that demand efficient space utilization alongside robust electrical separation between low-voltage control logic and higher-voltage power stages.

Replacement Considerations

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