CNY17F4S

Overview

The CNY17F4S is a single-channel phototransistor output optocoupler manufactured by onsemi. It features a surface-mount 6-SMD (Gull Wing) package and provides an isolation voltage of 5300Vrms. The device utilizes an NPN phototransistor output capable of handling a maximum collector current of 50mA and a collector-emitter voltage of 70V. Key electrical parameters include a forward voltage of 1.35V, a minimum current transfer ratio of 160%, and typical rise/fall times of 2µs/3µs. It operates within a temperature range of -40°C to 100°C.

Feature Summary

• Provides high-voltage galvanic isolation between input and output circuits
• Features fast switching performance with low propagation delay
• Designed for surface-mount assembly in compact electronic systems

Applications

• Industrial control signal isolation
• Microcontroller interface circuits
• Power supply feedback loops

Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout and isolation ratings. Ensure compatibility with surface-mount reflow profiles. Confirm RoHS compliance status through manufacturer documentation before integration into regulated products.

Selection Notes

Select this component when high isolation voltage is required in a small surface-mount footprint. Compare current transfer ratio requirements against load conditions. Verify thermal management capabilities within the specified operating temperature range for the target application environment.

Part Context

This part belongs to the CNY17 series of optocouplers from onsemi. It serves as a surface-mount alternative to through-hole variants like the CNY17F4M. The series is widely used for general-purpose signal isolation in consumer and industrial electronics.

Replacement Considerations

CNY17F4SR2VM is listed as a similar replacement option.