ELD207(TB)

Overview

The ELD207(TB) is a dual-channel transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features an 8-SOP surface-mount package and provides 3750Vrms isolation voltage. The device utilizes NPN phototransistor outputs with a maximum collector-emitter voltage of 80V. Key electrical parameters include a typical forward voltage of 1.2V, a maximum DC forward current of 60mA, and a saturation voltage of 400mV. The current transfer ratio ranges from 100% to 200% at 10mA input. Operating temperatures span from -55°C to 110°C, with typical switching times of 5µs (on) and 4µs (off).

Feature Summary

• Dual-channel configuration for independent signal isolation within a compact footprint.
• High insulation voltage capability ensuring robust protection between input and output circuits.
• NPN phototransistor output design suitable for digital logic interfacing applications.

Applications

• Industrial control systems requiring galvanic isolation
• Signal transmission in noisy electrical environments
• Microcontroller interface circuits

Procurement Notes

Verify the specific suffix designation against official Everlight documentation to confirm tape-and-reel packaging specifications. Ensure compatibility with existing PCB footprints and reflow soldering profiles. Confirm RoHS compliance status through current datasheets as manufacturing processes may evolve. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when dual-channel isolation is required in space-constrained designs. The 8-SOP package offers a balance between pin count and board area efficiency. Consider the 3750Vrms isolation rating for safety-critical applications. Evaluate the current transfer ratio requirements against the driving circuit capabilities to ensure reliable switching performance under varying temperature conditions.

Part Context

This component belongs to the ELD20x series of transistor output optocouplers. The series is designed for general-purpose isolation tasks. Variations in suffixes typically denote packaging differences rather than functional changes. The ELD207 variant specifically provides two isolated channels within a single package, distinguishing it from single-channel counterparts in the same family.

Replacement Considerations

ELD207(TA)-V serves as a verified alternative with identical electrical characteristics but different packaging options. Verify pinout compatibility before substitution. Check datasheet revisions for any minor parameter shifts between production batches of equivalent models.