CNY171S

Transistor, Photovoltaic Output Optoisolators Overview

The CNY171S is a single-channel phototransistor optocoupler manufactured by Fairchild Semiconductor. It integrates a Gallium Arsenide infrared emitting diode with an NPN phototransistor to provide electrical isolation. The device features a minimum collector-emitter breakdown voltage (BVCEO) of 70V and supports a maximum forward current of 60mA. It offers high isolation voltage ratings, typically ranging from 5300Vrms to 7500V depending on the specific package variant and certification. The component operates within a temperature range of -55°C to 100°C and is available in surface-mount configurations.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates a Gallium Arsenide IRED coupled with an NPN phototransistor for signal transmission
• Provides high electrical isolation between input and output circuits
• Features a high collector-emitter breakdown voltage of at least 70V
• Available in UL recognized and VDE certified package options

Transistor, Photovoltaic Output Optoisolators Applications

• Power supply regulators
• Microprocessor inputs
• Industrial controls
• Digital logic inputs

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix against official Fairchild or onsemi documentation to confirm isolation voltage ratings and package type. Confirm RoHS compliance status and lead times through authorized distributors. Check for obsolescence notices as older variants may be discontinued. Ensure the selected part matches the required isolation certification (UL or VDE) for the target application safety standards.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select the CNY171S variant based on the required isolation voltage rating and package style. Verify the current transfer ratio group if precise gain is necessary for the circuit design. Ensure the operating temperature range meets the environmental requirements. Compare specifications with alternative optocouplers if higher speed or different pinout compatibility is needed.

Transistor, Photovoltaic Output Optoisolators Part Context

The CNY171S belongs to the CNY17 series of phototransistor optocouplers produced by Fairchild Semiconductor. This series is widely used for general-purpose isolation tasks. The 'S' suffix typically denotes a surface-mount package variant, distinguishing it from through-hole DIP versions like the CNY17-1. The series is known for its reliability in industrial and consumer electronics applications.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes include other CNY17 series variants such as CNY17-1 or CNY17F1, provided the package and isolation ratings are compatible. Cross-reference with Vishay CNY17-1 equivalents. Verify pinout compatibility and electrical parameters before substitution.