CQY80NG

Overview

The CQY80NG is a single-channel phototransistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It integrates a gallium arsenide infrared emitting diode with an NPN phototransistor featuring a base connection, housed in a 6-lead DIP package. Key electrical parameters include a minimum current transfer ratio of 50%, an isolation voltage of 5000 Vrms, and a maximum collector-emitter voltage of 32V. The device supports a maximum forward current of 60mA and a collector current of 50mA, with a power dissipation rating of 250mW. Operating temperatures range from -55°C to +100°C.

Feature Summary

• Integrates a gallium arsenide infrared LED with an NPN phototransistor for optical signal transmission
• Provides high insulation capability with 5000 Vrms isolation voltage between input and output circuits
• Features a dedicated base terminal on the phototransistor to allow for external biasing or speed adjustment

Applications

• General-purpose digital signal isolation in industrial control systems
• Power supply feedback loops requiring galvanic separation
• Microcontroller interface circuits for noise immunity

Procurement Notes

Verify the specific suffix 'NG' against the official Vishay datasheet to confirm compliance with RoHS directives and halogen-free status. Ensure the ordering part number matches the required packaging format, as tube quantities may vary by region. Cross-reference the manufacturer date code to ensure component freshness and storage history compliance before integration into production lines.

Selection Notes

Select this component when a base-connected phototransistor is required for improved switching speed or linear operation capabilities compared to standard configurations. The 6-DIP package facilitates through-hole mounting for robust mechanical connections. Consider the 50% minimum CTR for logic-level compatibility and verify that the 32V output voltage rating meets the load requirements of the destination circuit without exceeding saturation limits.

Part Context

The CQY80NG belongs to Vishay's portfolio of transistor output optocouplers designed for general-purpose isolation applications. It is part of a series that includes variants with different packaging or performance characteristics. This specific model emphasizes reliability and standard DIP form factor compatibility, serving as a foundational component for basic galvanic isolation needs in electronic designs where moderate speed and high voltage isolation are prioritized.

Replacement Considerations

Direct substitutes within the same family include the CQY80N (without the NG suffix), which shares identical electrical characteristics but may differ in environmental compliance or packaging details. Verify pinout compatibility and isolation voltage ratings when considering alternative brands or models to ensure functional equivalence in the existing circuit design.