4N26FVM

Overview

The onsemi 4N26FVM is a single optocoupler featuring an AlGaAs infrared LED coupled to an NPN phototransistor output. It provides electrical isolation with a high input-to-output breakdown voltage of 7500 Vrms. The device utilizes a 6-pin surface-mount package, specifically the SMD-6 configuration, designed for compact circuit board layouts. It operates within a standard temperature range and supports data transmission rates suitable for general-purpose digital signal isolation applications.

Feature Summary

• High isolation voltage capability for safe signal transfer between isolated circuits
• Compact surface-mount footprint suitable for space-constrained designs
• Direct coupling of infrared LED to NPN phototransistor for reliable switching

Applications

• General-purpose digital signal isolation in industrial control systems
• Isolation interfaces for microcontroller-based communication protocols
• Power supply feedback loops requiring galvanic separation

Procurement Notes

Verify the specific suffix FVM confirms the tape-and-reel packaging format and lead-free status as per the manufacturer's latest datasheet revision. Ensure the ordering part number matches the required pin configuration and isolation ratings for your specific design constraints before finalizing procurement.

Selection Notes

Select this component when a single-channel isolation solution with high breakdown voltage is required in a small surface-mount form factor. Consider the propagation delay and current transfer ratio specifications against your system timing requirements. Verify that the input forward current limits are compatible with your driving logic levels.

Part Context

This component belongs to the standard optocoupler category from onsemi, widely used for basic galvanic isolation. It serves as a fundamental building block for separating noisy ground domains in electronic systems. The product line offers various packages and isolation ratings to suit different density and safety standards.

Replacement Considerations

Check for direct pin-compatible replacements such as the HCPL-2630 or PC123 series if similar isolation and speed characteristics are needed. Verify that any substitute maintains the same 7500 Vrms isolation rating and 6-pin SMD package dimensions to ensure mechanical compatibility.