EL354(TB)-V

Overview

The EL354(TB)-V is a single-channel optocoupler featuring an infrared LED input and a phototransistor output, housed in a 4-pin SOP package. It provides 3750 Vrms isolation voltage for electrical insulation between circuits. The device supports both AC and DC input signals with a typical forward voltage of 1.2 V and a maximum DC forward current of 50 mA. Key performance metrics include a minimum current transfer ratio of 20% at 1 mA and a maximum output voltage of 80 V. The component operates within a temperature range of -55°C to +100°C.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using infrared light transmission.
• Features a phototransistor output suitable for digital logic interfacing and impedance transformation.
• Supports dual-mode operation accepting both alternating current (AC) and direct current (DC) input signals.

Applications

• Digital logic signal transmission and level shifting
• Power supply control and switching circuits
• Electrical insulation isolation between system components

Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to confirm pinout configuration and packaging type. Ensure the procurement source provides valid RoHS compliance records as required by project specifications. Cross-reference the part number with the latest Everlight Electronics datasheet to confirm availability status, as some variants may be marked obsolete or discontinued.

Selection Notes

Select this component when high isolation voltage is required for low-speed signal transmission between isolated domains. The phototransistor output offers sufficient gain for driving logic inputs directly. Consider the operating temperature range and current transfer ratio variations when designing for extreme environmental conditions or precise analog-like switching thresholds.

Part Context

This device belongs to the EL354 series of optocouplers manufactured by Everlight Electronics Co Ltd. The series is designed for general-purpose isolation applications requiring reliable signal transfer across galvanic barriers. The SOP-4 package allows for compact surface-mount assembly on printed circuit boards, facilitating integration into space-constrained electronic designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative optocouplers based on matching isolation voltage, output type, and package dimensions before substitution.