CNY17F4SM

Overview

The CNY17F4SM is a single-channel optoisolator manufactured by onsemi, featuring an NPN phototransistor output in a 6-SMD gull-wing package. It provides an isolation voltage of 4170Vrms and supports a maximum collector current of 50mA with a collector-emitter voltage of 70V. The device operates within a temperature range of -40°C to +100°C and offers a typical rise time of 6µs and fall time of 24µs. Key electrical parameters include a minimum current transfer ratio of 160% at 10mA input, a forward voltage of 1.35V to 1.65V, and a maximum DC forward current of 60mA.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using optical transmission technology.
• Features a standard NPN phototransistor output suitable for general-purpose switching applications.
• Designed for surface-mount assembly to facilitate compact circuit board layouts.

Applications

• General-purpose signal isolation in industrial control systems
• Interface circuits for microcontrollers and logic gates
• Power supply feedback loops

Procurement Notes

Verify the specific suffix 'SM' against the manufacturer's latest datasheet to confirm the exact package variant and tape-and-reel or bulk packaging configuration. Ensure that the ordering information matches the required moisture sensitivity level and RoHS compliance status as defined in the official component documentation before finalizing procurement orders.

Selection Notes

Select this component when a single-channel transistor output isolator is required with a 6-SMD footprint. Consider the 4170Vrms isolation rating and the 50mA collector current limit to ensure compatibility with the target load requirements. Verify that the operating temperature range meets the environmental conditions of the intended application.

Part Context

This part belongs to the CNY17 series of optocouplers produced by onsemi. The series is widely used for basic isolation tasks in consumer and industrial electronics. The CNY17F4SM specifically denotes the surface-mount version of the traditional through-hole CNY17 devices, maintaining similar electrical characteristics while adapting to modern PCB assembly techniques.

Replacement Considerations

Cross-reference with other single-channel SMD optocouplers offering comparable isolation voltages and current transfer ratios. Verify pinout compatibility and thermal performance if substituting with parts from different manufacturers.