EL1018-G

Overview

The EL1018-G is a single-channel phototransistor output optocoupler manufactured by Everlight Electronics. It features a gallium arsenide infrared LED coupled to an NPN silicon phototransistor within a compact four-pin SOP package with long creepage distance. Key electrical specifications include a collector-emitter voltage of 80 V, a maximum forward current of 60 mA, and a high isolation voltage rating of 5000 Vrms. The device operates within a temperature range of -55°C to +110°C and offers a typical current transfer ratio of 260% at 5 mA input.

Feature Summary

• High isolation voltage capability between input and output circuits
• Compact surface-mount SOP-4 package with extended creepage distance
• Wide operating temperature range suitable for industrial environments

Applications

• Signal isolation in microprocessor systems
• Switching power supply feedback loops
• Solid-state relay driver circuits

Procurement Notes

Verify the specific suffix (G) confirms halogen-free compliance and RoHS status as per the manufacturer's datasheet. Ensure the ordering code matches the required tape-and-reel or tube packaging configuration. Confirm that the SOP-4 footprint dimensions align with the target PCB layout before finalizing procurement orders.

Selection Notes

Select this component when high isolation voltage and compact form factor are required for signal transmission. The NPN phototransistor output is suitable for digital switching applications. Consider the current transfer ratio requirements and ensure the input forward current stays within the specified maximum limits to maintain reliable operation across the full temperature range.

Part Context

This part belongs to the EL101X-G series of phototransistor optocouplers from Everlight. The series is characterized by its long creepage distance design, which enhances safety isolation performance. These components are widely used in general-purpose isolation applications where space constraints and regulatory compliance are critical factors.

Replacement Considerations

Check for direct pin-compatible alternatives such as the EL1018-TA variant if different packaging or specific suffix requirements apply. Verify that any substitute maintains the same 80 V collector-emitter voltage and 5000 Vrms isolation rating.