CNY75C

Overview

The CNY75C is a single-channel optoisolator featuring an NPN phototransistor output with a base terminal, housed in a 6-DIP package. It provides 5000Vrms isolation voltage and supports a maximum collector current of 50mA with a collector-emitter voltage of 70V. The device exhibits a typical forward voltage of 1.6V at a maximum DC forward current of 60mA. Current transfer ratio ranges from 63% to 320% at 10mA input. Switching characteristics include typical rise/fall times of 4.2µs/4.7µs and turn-on/turn-off times of 7µs/5µs. Operating temperature spans -55°C to +110°C.

Feature Summary

• Integrated base terminal on the phototransistor for improved switching speed and linearity control
• High isolation voltage rating suitable for demanding industrial environments
• Wide operating temperature range ensuring reliability under extreme conditions

Applications

• Switch-mode power supplies
• Line receivers
• Computer peripheral interfaces

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm pinout and electrical tolerances. Ensure the procurement channel provides valid RoHS compliance certificates. Confirm package integrity upon receipt as DIP components are sensitive to mechanical stress during handling and storage.

Selection Notes

Select this component when base access is required for faster response or linear operation compared to standard transistor outputs. Verify that the 50mA collector current limit meets the load requirements. Ensure the 5000Vrms isolation rating aligns with the system's safety standards and creepage distance constraints.

Part Context

The CNY75C belongs to the CNY75 series of Vishay optocouplers, which integrate a gallium arsenide infrared emitting diode with an NPN phototransistor. This series is designed for general-purpose isolation applications requiring reliable signal transmission between isolated circuits while maintaining high voltage blocking capabilities.

Replacement Considerations

• CNY75A
• CNY75G

FAQ

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

The base terminal allows for external biasing or feedback, enabling faster switching speeds and improved linearity compared to devices without a base connection.

What is the typical current transfer ratio for the CNY75C?

The current transfer ratio typically ranges from 63% to 320% when tested at a forward current of 10mA.