CNY171SD

Transistor, Photovoltaic Output Optoisolators Overview

The CNY171SD is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output with a base lead for enhanced switching speed and stability. The device provides high isolation capability with an insulation voltage of 5300 Vrms. Key electrical parameters include a collector-emitter saturation voltage of 400 mV maximum, a forward current of 60 mA, and a forward voltage of 1.65 V. The unit operates within a temperature range of -40°C to +100°C and is available in a surface-mount SMD-DIP-6 package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides galvanic isolation between input and output circuits using light-based signal transmission
• Includes a dedicated base terminal on the phototransistor to improve switching performance
• Designed for surface-mount installation in compact electronic assemblies

Transistor, Photovoltaic Output Optoisolators Applications

• Signal isolation in industrial control systems
• Interface circuits for microcontrollers and logic devices
• Power supply feedback loops requiring high isolation voltage

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout and isolation ratings. Ensure the component matches the required thermal and electrical specifications for the target application environment. Cross-reference manufacturer part numbers to avoid counterfeit or obsolete stock during sourcing.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage and fast switching are required in a small form factor. The integrated base connection offers superior performance compared to standard phototransistors without base leads. Consider the operating temperature range and power dissipation limits for reliable long-term operation in dense circuit boards.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the CNY171 series of optocouplers from onsemi. It is designed as a surface-mount alternative to traditional through-hole optoisolators. The series is widely used in applications demanding reliable electrical separation between low-voltage control circuits and higher-voltage power stages.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Check for direct substitutes such as the CNY171SR2VM which shares similar functional characteristics. Verify pin compatibility and isolation voltage ratings before substituting to ensure circuit integrity.