EL357NC(TB)-G

Overview

The EL357NC(TB)-G is a single-channel phototransistor output optocoupler from Everlight Electronics, housed in a compact 4-pin SOP surface-mount package. It integrates an infrared emitting diode with a phototransistor detector for electrical isolation. Key electrical parameters include a maximum collector-emitter voltage of 80V and a continuous forward current of 50mA. The device offers a high isolation voltage of 3750Vrms and operates within a temperature range of -55°C to +110°C. Typical switching times are 3µs rise and 4µs fall, with a minimum current transfer ratio of 200% at 5mA input.

Feature Summary

• Provides reliable electrical isolation between input and output circuits using infrared LED and phototransistor technology.
• Features a compact 4-pin SOP surface-mount design suitable for high-density PCB layouts.
• Ensures safety in low-voltage and low-current DC signal transmission applications through high isolation voltage ratings.

Applications

• Low-voltage DC signal transmission
• Industrial control systems
• Communication equipment

Procurement Notes

Verify the specific suffix designation against official Everlight documentation to confirm tape-and-reel packaging and VDE certification status. Ensure the selected variant matches the required isolation standards for the target application environment. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component for applications requiring robust galvanic isolation in space-constrained designs. The wide operating temperature range supports deployment in harsh industrial environments. Verify that the 50mA forward current limit and 80V collector voltage meet the circuit requirements before integration.

Part Context

This device belongs to the EL357N-G series of ultra-small SOP phototransistor optocouplers. The series is designed for general-purpose isolation tasks where small footprint and high reliability are prioritized. It serves as a standard solution for signal coupling in consumer electronics and industrial automation modules.

Replacement Considerations

EL357N(C)(TA)-G