Optocoupler SMD 4-channel 3 kV isolation EB664719454 by Everlight

SMD optocoupler EB664719454 is a 4-channel isolation device designed to provide reliable electrical separation between input and output circuits. The component delivers 3 kV insulation strength in a compact surface-mount package suitable for automated PCB assembly. It isolates control and signal lines in industrial automation, power supplies and communication equipment, helping protect low-voltage electronics from high-voltage sections and reducing crosstalk and interference between channels.

Advantages

The 4-channel SMD optocoupler provides high-voltage isolation of up to 3 kV while keeping a small PCB footprint, enabling space-efficient board layouts. Its surface-mount design supports pick-and-place assembly and reflow soldering, contributing to consistent manufacturing quality. Multiple channels in one package simplify routing and component count, and the device improves system reliability by minimizing ground loop issues and electrical noise coupling.

Suitable for

• Isolation of digital control signals in industrial automation
• Protecting low-voltage microcontroller inputs from high-voltage sections
• Signal separation in switched-mode power supplies and power converters
• Communication interfaces requiring galvanic isolation

Key specifications

• Channel count: 4 channels in a single surface-mount package
• Isolation voltage: rated for 3 kV isolation between input and output
• Mounting type: surface-mount (SMD) suitable for automated PCB assembly
• Function: optically coupled input-to-output signal isolation for digital lines
• Typical applications: industrial, power supply, communication circuitry requiring galvanic isolation

How to use

Place the SMD optocoupler on the PCB following the manufacturer’s recommended footprint and orientation. Route the input-side traces and the output-side traces to maintain the required creepage and clearance distances for 3 kV isolation, and avoid placing high-voltage conductors over the isolation barrier. Use standard reflow soldering profiles for SMD components and observe ESD handling procedures during assembly. Drive the input LEDs with appropriate current-limiting resistors and ensure the output side is biased according to the receiving circuitry’s logic levels.

Usage recommendations

For reliable isolation performance, maintain specified creepage and clearance on the PCB, follow recommended soldering profiles, and design input resistor values to match the desired LED drive current. Verify isolation with appropriate dielectric strength testing after assembly and implement proper ESD protection during handling and operation.