EL3H7(EB)-G

Overview

The EL3H7(EB)-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features an infrared emitting diode optically coupled to an NPN phototransistor detector, encapsulated in green compound within a 4-SSOP package. The device provides an isolation voltage of 3750 Vrms and operates across a temperature range of -55°C to +110°C. Current transfer ratios vary by suffix, with the (EB) variant typically specified between 80% and 160% at a forward current of 5mA.

Feature Summary

• High isolation voltage capability between input and output circuits
• CSA approval for safety standards compliance
• Surface mount 4-SSOP packaging for automated assembly

Applications

• Industrial control systems requiring galvanic isolation
• Signal transmission across isolated ground planes
• Microcontroller interface circuits for noise immunity

Procurement Notes

Verify the specific current transfer ratio bin required for your application, as the EL3H7 series includes multiple variants distinguished by suffix letters indicating different CTR ranges. Confirm package availability, as some variants are tube-packed while others may be reel or cut tape. Check RoHS compliance status and ensure the operating temperature range meets your environmental specifications before finalizing procurement.

Selection Notes

Select this component when high isolation voltage and wide operating temperature range are critical. The NPN phototransistor output is suitable for digital switching applications. Ensure the forward current requirements align with the driver circuit capabilities. Consider the physical dimensions of the 4-SSOP package for PCB layout constraints compared to through-hole alternatives.

Part Context

This part belongs to the EL3H7-G series of transistor output optocouplers from Everlight. The series is characterized by its use of green compound encapsulation and CSA approval. Variants within the series differ primarily in their current transfer ratio specifications and packaging formats, allowing designers to choose based on performance and manufacturing needs.

Replacement Considerations

Direct substitutes include other EL3H7 variants such as EL3H7(A)(EB)-G or EL3H7(E)(EB)-G, which share the same package and isolation characteristics but offer different current transfer ratio bins. Verify pinout compatibility and electrical parameters before substitution.