CNY17-4

Transistor, Photovoltaic Output Optoisolators Overview

The CNY17-4 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor with a base terminal, housed in a 6-pin DIP package for through-hole mounting. The device provides 5000 Vrms isolation voltage and supports a maximum collector-emitter voltage of 70 V. Key electrical parameters include a forward current of 60 mA, a forward voltage of 1.65 V, and a collector current of 100 mA. The current transfer ratio ranges from 160% to 320%, with typical rise and fall times of 2 µs.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates an NPN phototransistor with an accessible base terminal for enhanced circuit control and speed optimization.
• Provides robust galvanic isolation between input and output circuits via a 5000 Vrms dielectric barrier.
• Designed for high-speed switching applications with typical rise and fall times of 2 microseconds.

Transistor, Photovoltaic Output Optoisolators Applications

• Signal isolation in digital communication interfaces
• Switching power supply feedback loops
• Microcontroller input/output isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix designation against official Vishay documentation to confirm pinout configuration and current transfer ratio binning. Ensure the selected variant matches the required isolation voltage and package style for the target PCB layout. Cross-reference datasheet revisions to confirm compliance with current RoHS standards and material declarations before finalizing procurement specifications.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a base-connected phototransistor is required to improve switching speed or allow external biasing. Compare the 160-320% current transfer ratio range against system gain requirements. Evaluate the 70 V collector-emitter voltage rating against load conditions. Consider the 6-DIP package dimensions for mechanical fit within the enclosure constraints.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the CNY17 series of general-purpose optocouplers. It shares the same physical footprint and basic functionality as variants like the CNY17-1, CNY17-2, and CNY17-3, but differs specifically in its current transfer ratio classification. The inclusion of a base terminal distinguishes it from standard phototransistor outputs without external access.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Verify compatibility with alternative manufacturers such as Lite-On or Everlight only if their datasheets explicitly state identical pinouts and electrical characteristics for the CNY17-4 specification.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the function of the base terminal on the phototransistor?

The base terminal allows for external connection to adjust the sensitivity or switching speed of the phototransistor, offering more control than a standard two-terminal output.

What is the typical switching speed of the CNY17-4?

The typical rise time and fall time are both 2 microseconds, making it suitable for moderate-speed digital signal transmission.