ELQ3H7(TA)

Overview

The ELQ3H7(TA) is a quad-channel optoisolator manufactured by Everlight Electronics. It features four independent NPN phototransistor outputs driven by infrared LEDs, providing electrical isolation between input and output circuits. The device offers a high isolation voltage of 3750 Vrms and operates within an extended temperature range from -55°C to +110°C. Packaged in a 16-lead SSOP format, it supports a minimum current transfer ratio of 50% at a forward current of 5mA and collector-emitter voltage of 5V.

Feature Summary

• Provides galvanic isolation for four independent signal channels within a single compact package
• Utilizes NPN phototransistor output configuration for reliable digital signal transmission
• Engineered with halogen-free materials to meet environmental compliance standards

Applications

• Industrial control systems requiring multi-channel signal isolation
• Communication equipment interface circuits
• Microcontroller peripheral isolation interfaces

Procurement Notes

Verify the specific suffix designation against the manufacturer's latest documentation to ensure compatibility with required packaging formats such as tape and reel or tube configurations. Confirm that the selected variant meets all necessary regulatory certifications for the intended deployment region before finalizing procurement orders.

Selection Notes

Select this component when multiple isolated channels are required in a space-constrained design. Ensure the application voltage does not exceed the maximum collector-emitter rating and that the forward current remains within specified limits to maintain optimal current transfer ratio performance across the operating temperature range.

Part Context

This part belongs to the ELQ3H7 series of quad-channel optocouplers from Everlight Electronics. The series is designed for applications demanding high-density isolation solutions. The TA suffix typically indicates a specific packaging configuration, distinguishing it from other variants in the same functional family.

Replacement Considerations

Direct replacements must match the 16-SSOP package and quad-channel architecture. Verify pinout compatibility and isolation voltage ratings before substitution.