CNY17F3S

Overview

The CNY17F3S is a surface-mount optocoupler featuring a single channel with an NPN phototransistor output. It provides electrical isolation of 5300 Vrms between input and output circuits. The device accepts DC input with a maximum forward current of 60 mA and a typical forward voltage of 1.65 V. Key performance parameters include a collector-emitter saturation voltage of 400 mV maximum, a collector current rating of 50 mA, and a collector-emitter voltage of 70 V. The unit operates within a temperature range of -40°C to +100°C.

Feature Summary

• Provides high-voltage electrical isolation for signal transmission
• Utilizes an NPN phototransistor for reliable digital switching
• Designed for compact surface-mount assembly

Applications

• Industrial control systems requiring circuit isolation
• Consumer electronics power supply feedback loops
• General-purpose signal isolation in low-speed data transfer

Procurement Notes

Verify the specific suffix variant against the target datasheet requirements. Confirm that the component status aligns with project longevity needs, as certain variants may be obsolete or discontinued. Ensure compliance with RoHS directives and check moisture sensitivity levels for proper storage handling prior to assembly.

Selection Notes

Select this component when a standard transistor-output optocoupler is required for basic isolation tasks. Consider the 5300 Vrms isolation rating for safety compliance. Evaluate the package dimensions against PCB space constraints. Verify that the current transfer ratio meets the logic level requirements of the receiving circuit.

Part Context

This part belongs to the CNY17 family of optocouplers, which are widely used for general-purpose isolation. The 'S' suffix typically denotes a surface-mount package configuration. These devices are commonly found in applications needing galvanic separation between microcontroller logic and higher voltage loads.

Replacement Considerations

Public confirmed substitute part numbers: None available.