EL3H7(K)-G

Overview

The EL3H7(K)-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 a green compound within a 4-SSOP package. The device provides an isolation voltage of 3750 Vrms and operates within a temperature range of -55°C to +110°C. Key electrical parameters include a maximum collector-emitter voltage of 80V, a DC forward current of 50 mA, and a typical rise/fall time of 5µs/3µs.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using optical coupling technology.
• Features a compact 4-pin surface mount SSOP package designed for space-constrained applications.
• Utilizes an NPN phototransistor output for reliable signal transmission with low saturation voltage.

Applications

• Industrial control systems requiring galvanic isolation
• Consumer electronics with safety isolation requirements
• Signal interface circuits in microcontroller-based designs

Procurement Notes

Verify the specific suffix (K) against official Everlight documentation to confirm packaging type and CTR binning. Confirm RoHS compliance status through the latest datasheet revision. Check for obsolescence notices or lifecycle changes directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a small form factor and high isolation voltage are required. Ensure the NPN output configuration matches the receiving circuit design. Verify that the operating temperature range meets the environmental conditions of the target application.

Part Context

This part belongs to the EL3H7 series of ultra-small SSOP optocouplers. The series is characterized by its compact footprint and robust isolation capabilities, suitable for modern electronic designs where size and safety standards are critical constraints.

Replacement Considerations

Cross-reference with other EL3H7 variants such as EL3H7-G or EL3H7(A)-G for pin-compatible alternatives. Verify functional equivalence regarding CTR ranges and package dimensions before substitution.