CNY64B

Overview

The CNY64B is a single-channel phototransistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output with a collector-emitter voltage rating of 32V and a maximum collector current of 50mA. The device provides high isolation capability with a rated insulation voltage of 8200Vrms. It operates within a temperature range of -55°C to +85°C and utilizes a standard DIP-4 package for through-hole mounting.

Feature Summary

• Provides galvanic isolation between input and output circuits via an internal LED and phototransistor pair.
• Features a high insulation voltage rating suitable for demanding safety applications.
• Includes a base terminal on the phototransistor to allow for external biasing or speed adjustment.

Applications

• Signal isolation in industrial control systems
• Switch-mode power supply feedback loops
• Microcontroller interface circuits requiring electrical separation

Procurement Notes

Verify the specific suffix code against the manufacturer's latest datasheet to confirm pinout configuration and performance grades. Ensure the procurement channel provides original documentation to validate RoHS compliance and authenticity. Cross-reference the ordering part number with official Vishay databases to avoid confusion with similar variants in the CNY64 series.

Selection Notes

Select this component when a high isolation voltage is required alongside a standard phototransistor output. The available base connection allows designers to optimize switching speed or sensitivity by adjusting external resistance. Consider the DIP-4 package constraints for PCB layout and verify that the collector current requirements do not exceed the 50mA limit under all operating conditions.

Part Context

This device belongs to the CNY64 family of optocouplers, which are designed for general-purpose isolation tasks. The family includes various output types and packaging options. The CNY64B specifically denotes the version with a base connection on the phototransistor, distinguishing it from versions without this terminal. It is widely used in applications where cost-effective isolation with moderate speed is sufficient.

Replacement Considerations

Direct replacements include other CNY64 series variants such as CNY64ST (surface mount) or CNY64A, provided the pinout and electrical characteristics match the design requirements. Verify that substitute components meet the same isolation voltage and current transfer ratio specifications.