CQY80N

Overview

The CQY80N is a single-channel transistor 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%, a maximum collector-emitter voltage of 32V, and a peak forward current of 60mA. The device offers 5000 Vrms isolation voltage and operates within a temperature range of -55°C to +100°C. Typical switching times are 7µs rise and 6.7µs fall.

Feature Summary

• Integrates a gallium arsenide infrared LED with an NPN phototransistor for signal transmission.
• Provides high insulation voltage capability suitable for safety-critical applications.
• Features a base-connected phototransistor structure for enhanced switching performance.

Applications

• General-purpose signal isolation in industrial control systems
• Interface circuits between microprocessors and power stages
• Switching power supply feedback loops

Procurement Notes

Verify the specific suffix (e.g., NG) against the datasheet to confirm packaging and compliance details. Ensure the required current transfer ratio meets the design margin, as values vary. Confirm lead-free status and RoHS compliance requirements prior to ordering. Cross-reference the manufacturer part number with distributor catalogs to avoid confusion with similar series components.

Selection Notes

Select this component when a standard phototransistor output with base access is required for faster switching than basic models. Consider the 32V collector-emitter voltage limit for low-voltage logic interfacing. Evaluate the 50% minimum CTR to ensure adequate noise immunity in noisy environments. Compare switching speeds against higher-speed logic output alternatives if system timing is critical.

Part Context

The CQY80N belongs to Vishay's portfolio of discrete semiconductor optocouplers. It is part of a family offering various isolation voltages and output types. This specific model targets applications needing reliable galvanic isolation with moderate speed capabilities. It complements other Vishay optoisolators designed for different voltage and speed requirements.

Replacement Considerations

Public confirmed substitutes include the CQY80NG variant, which shares identical electrical characteristics but may differ in packaging or compliance specifications. Verify pinout compatibility and thermal resistance before substitution.

FAQ

What is the typical rise and fall time for the CQY80N?

The typical rise time is 7µs and the typical fall time is 6.7µs.

Does the CQY80N have a base connection on the phototransistor?

Yes, the CQY80N features a phototransistor with a base connection, allowing for potential external biasing or speed enhancement.