CNY64A

Overview

The CNY64A is a single-channel phototransistor output optocoupler featuring an infrared-emitting diode optically coupled to an NPN phototransistor in a 4-pin DIP package. It offers a very high isolation voltage of 8200 Vrms and supports a maximum collector-emitter voltage of 32 V with a collector current of 50 mA. The device exhibits a current transfer ratio ranging from 63% to 125%, a forward voltage of 1.6 V, and a saturation voltage of 300 mV. Operating temperatures span from -55°C to 85°C, with rise and fall times of 2.4 µs.

Feature Summary

• Provides very high insulation voltage capability for robust signal isolation
• Integrates a gallium arsenide infrared-emitting diode with an NPN phototransistor
• Designed for through-hole mounting in standard 4-pin plastic packages

Applications

• General-purpose signal isolation circuits
• Low-speed data transmission interfaces
• Solid-state relay driver applications

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm pinout configuration and electrical tolerances. Ensure the selected variant matches the required package style and compliance standards. Cross-reference datasheet revisions to confirm active status and parameter consistency before integration into design specifications.

Selection Notes

Select this component when high isolation voltage is required alongside moderate speed performance. The specified current transfer ratio range suits applications needing predictable gain without complex calibration. Verify thermal management requirements against the stated operating temperature range for reliable long-term operation in enclosed environments.

Part Context

This device belongs to the CNY64/CNY65/CNY66 series manufactured by Vishay Semiconductor Opto Division. The series utilizes a phototransistor output architecture housed in a 4-pin plastic package. These components are designed for general-purpose isolation tasks where high dielectric strength between input and output channels is a primary design constraint.

Replacement Considerations

Official substitutes within the same family include CNY64B, CNY64C, and CNY64D. These variants share identical physical packaging and basic functionality but differ in their current transfer ratio specifications. Verify that the alternative's gain range aligns with the circuit's biasing requirements.