SFH619A-X009TO

Overview

The SFH619A-X009TO is a single-channel photodarlington output optocoupler manufactured by Vishay Semiconductor Opto Division. It features a surface-mount SMD-4 package and provides an isolation voltage of 5000 Vrms. The device offers a minimum current transfer ratio of 1000% at 1 mA input current. Key electrical parameters include a maximum collector-emitter voltage of 300 V, a maximum collector current of 125 mA, and a forward voltage of 1.5 V at 50 mA forward current. The saturation voltage is 1 V maximum, with a power dissipation of 200 mW. Operating temperature ranges from -55°C to +100°C.

Feature Summary

• High current transfer ratio exceeding 1000% for efficient signal transmission at low input currents
• Robust insulation capability with 5000 Vrms isolation voltage for safety-critical applications
• Photodarlington output structure enabling high gain and direct interface with digital logic

Applications

• Digital logic signal transmission and level shifting
• Power supply control and switching circuits
• Electrical isolation between circuits and systems
• Impedance transformation in industrial electronics

Procurement Notes

Verify the specific suffix X009TO against official Vishay documentation to confirm tape-and-reel packaging configuration. Ensure the component meets RoHS compliance requirements as specified in the datasheet. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before procurement.

Selection Notes

Select this component when high current transfer ratio is required for low-power LED drive conditions. The photodarlington output suits applications needing higher output current compared to standard phototransistors. Verify that the 300 V collector-emitter voltage rating aligns with the load requirements. Consider the SMD-4 package dimensions for PCB layout constraints.

Part Context

This component belongs to the Vishay SFH619A series of transistor output optocouplers. It utilizes a photodarlington output stage to achieve superior sensitivity. The series is designed for general-purpose isolation tasks where high gain and moderate speed are sufficient. It complements other Vishay optocouplers offering different output types or package styles.

Replacement Considerations

Direct substitutes may include other Vishay photodarlington optocouplers with similar pinout and electrical characteristics. Verify compatibility regarding isolation voltage, current transfer ratio, and package dimensions. Consult Vishay's replacement guide for cross-reference information.