EL357NE(TA)-G

Overview

The EL357NE(TA)-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode and a phototransistor detector within a compact four-pin SOP surface-mount package. The device provides electrical isolation with a rated isolation voltage of 3750 Vrms. Key electrical parameters include a forward voltage of 1.2V, a collector-emitter saturation voltage of 100mV at specified currents, and a current transfer ratio ranging from 50% to 600%. Switching characteristics feature a rise time of 3μs and a fall time of 4μs. The unit supports a maximum load voltage of 80V 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 infrared photoelectric conversion technology.
• Features a compact four-pin SOP surface-mount design suitable for dense PCB layouts.
• Delivers stable signal transmission with a wide current transfer ratio range for diverse gain requirements.
• Ensures operational reliability across extended industrial temperature environments.

Applications

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

Procurement Notes

Verify the specific suffix designation against the manufacturer's latest documentation to confirm exact binning or packaging variations. Confirm RoHS compliance status and lead times directly with authorized distributors. Ensure the selected variant matches the required current transfer ratio specifications for the target application circuit design.

Selection Notes

Select this component when a compact footprint and high isolation voltage are required for DC signal coupling. Evaluate the current transfer ratio requirements to ensure compatibility with the driving circuit and load conditions. Consider the thermal management capabilities given the operating temperature range and power dissipation limits in the final assembly environment.

Part Context

This part belongs to the EL357N-G series of transistor output optocouplers. The series is designed for general-purpose isolation applications where size constraints and reliability are critical. It shares common family characteristics such as the SOP-4 package and basic isolation ratings, but specific electrical parameters like CTR bins may vary among different suffixes within the same product line.

Replacement Considerations

Direct substitutes include other variants within the EL357N-G series, such as EL357N(A)(TA)-G or EL357N(B)(TA)-G. Verify pinout compatibility and electrical parameter overlaps before substitution. Cross-referencing with similar SOP-4 transistor output optocouplers from other manufacturers requires careful validation of isolation voltage and switching speed parameters.

FAQ

What is the maximum isolation voltage rating for this device?

The device supports an isolation voltage of 3750 Vrms between the input and output terminals.

Does this component support high-speed signal transmission?

Yes, it features microsecond-level switching speeds with a typical rise time of 3μs and fall time of 4μs.