4N27FVM

Overview

The 4N27FVM is a single-channel optocoupler manufactured by onsemi, featuring an infrared-emitting GaAs LED coupled to a silicon NPN phototransistor. It provides electrical isolation with a high input-to-output voltage rating of 7500 Vrms. The device is housed in a compact 6-pin surface-mount package (SMD), designed for efficient PCB integration. Key electrical characteristics include a minimum Current Transfer Ratio (CTR) and specific collector-emitter breakdown voltages, ensuring reliable signal transmission across isolated circuits while maintaining safety compliance.

Feature Summary

• High isolation voltage capability for safe circuit separation
• Compact surface-mount design for space-constrained applications
• Integrated base terminal for enhanced switching speed control

Applications

• Industrial automation control systems
• Power supply feedback loops
• Microcontroller interface isolation

Procurement Notes

Verify the exact datasheet revision and CTR binning before procurement, as performance varies within specifications. Confirm the 6-pin SMD footprint matches your PCB layout requirements. Ensure the supplier provides traceability documentation compliant with industry standards. Check for RoHS compliance status if required by your manufacturing regulations. Validate the operating temperature range against your environmental conditions.

Selection Notes

Select this component when high isolation voltage and small form factor are critical. Consider the integrated base pin for faster turn-off times compared to baseless variants. Evaluate the CTR requirements against your drive circuit capabilities. Ensure the package type suits your automated assembly process. Compare thermal dissipation needs with similar DIP or SOIC alternatives.

Part Context

This part belongs to onsemi's general-purpose optocoupler portfolio, widely used for galvanic isolation. It complements other devices in the family offering different packaging or speed characteristics. The product line supports various industrial and consumer electronics applications requiring reliable signal transfer between isolated domains.

Replacement Considerations

Direct substitutes may include other 6-pin SMD optocouplers with similar isolation ratings and pinouts. Verify compatibility with existing PCB footprints and electrical parameters such as CTR and propagation delay. Cross-reference with equivalent parts from other manufacturers ensuring identical pin configuration and insulation class.