EL357NB(TA)-VG

Overview

The EL357NB(TA)-VG is a single-channel phototransistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode with a phototransistor detector in a compact SOP-4 surface-mount package. The device provides electrical isolation with a rated isolation voltage of 3750 Vrms and supports a collector-emitter saturation voltage of 100 mV at specified test conditions. Key electrical parameters include a forward voltage of 1.2 V, a reverse voltage of 6 V, and a maximum output current of 80 mA. The component operates within a temperature range of -55°C to +110°C and features switching times of 4 µs and 3 µs under defined input conditions.

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 layout applications.
• Ensures stable signal transmission across wide industrial temperature ranges.

Applications

• DC-DC converters
• Signal transmission between circuits of different potentials
• Industrial automation and control systems

Procurement Notes

Verify the specific suffix designations (B, TA, VG) against official Everlight documentation to confirm exact binning, tape-and-reel specifications, and compliance certifications. Ensure that the requested variant matches the required isolation voltage ratings and thermal characteristics for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when high-density packaging and robust isolation are required for signal interfacing. The SOP-4 form factor suits space-constrained designs, while the phototransistor output type is appropriate for general-purpose digital signaling where moderate speed and standard gain are sufficient for the circuit requirements.

Part Context

This part belongs to the EL357N-G series of transistor output optocouplers from Everlight Electronics. The series is characterized by its ultra-small footprint and high reliability, making it a common choice for modern electronic devices requiring galvanic isolation. The specific model denotes particular manufacturing variants within this established product family.

Replacement Considerations

Compatible substitutes within the same family include EL357N(B)(TA)-G and EL357N(C)(TA)-VG. Verify pinout compatibility and electrical parameter equivalence before substitution to ensure circuit functionality remains intact.

FAQ

What is the isolation voltage rating of the EL357NB(TA)-VG?

The device has an isolation voltage rating of 3750 Vrms between the input LED and the output phototransistor.

What is the operating temperature range for this optocoupler?

The component is rated for operation from -55°C to +110°C.