ELD211

Overview

The ELD211 is a dual-channel phototransistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features an 8-pin SOP package and provides high isolation with a rated insulation voltage of 3750 Vrms. The device utilizes NPN phototransistors for its output configuration, ensuring reliable signal transmission across isolated circuits. Designed for surface-mount applications, it supports automatic placement equipment and reflow soldering processes.

Feature Summary

• Dual-channel architecture for independent signal isolation
• High-voltage insulation capability up to 3750 Vrms
• NPN phototransistor output configuration
• Compatible with standard surface-mount assembly processes

Applications

• Industrial control systems requiring galvanic isolation
• Signal transmission in measurement and testing equipment
• Interface circuits between microprocessors and peripheral devices
• Power supply feedback loops for safety isolation

Procurement Notes

Verify the specific suffix designation (e.g., TA, TB) against the official datasheet to ensure correct packaging and moisture sensitivity level compliance. Confirm that the procurement channel provides valid RoHS certification documents. Check for any regional distribution restrictions or limited availability status before finalizing orders. Ensure storage conditions meet humidity sensitivity requirements upon receipt.

Selection Notes

Select this component when dual-channel isolation is required within a compact surface-mount footprint. Consider the 3750 Vrms insulation rating for applications demanding robust safety barriers. Evaluate the NPN output type against circuit drive requirements. Verify compatibility with automated assembly lines due to the SOP package format and tape-and-reel options.

Part Context

This part belongs to the EL21x/ELD21x series of transistor output optocouplers from Everlight. It shares functional similarities with single-channel variants but offers integrated dual isolation paths. The series is designed for general-purpose digital signal isolation in consumer and industrial electronics, emphasizing reliability and compact form factors.

Replacement Considerations

Cross-reference with EL211 for single-channel equivalents if only one isolation path is needed. Verify pinout compatibility with SOIC-8 packages from other manufacturers. Ensure replacement parts maintain the same 3750 Vrms insulation rating and NPN output characteristics for direct circuit substitution.