CNY171M

Transistor, Photovoltaic Output Optoisolators Overview

The CNY171M is a single-channel optocoupler featuring an AlGaAs infrared LED coupled to a silicon NPN phototransistor with a base terminal. It provides electrical isolation with a minimum collector-emitter breakdown voltage (BVCEO) of 70 V and an insulation voltage of 4170 Vrms. The device operates within a temperature range of -40°C to 100°C, supports a maximum forward current of 60 mA, and offers a typical current transfer ratio of 40%. Key timing parameters include a rise time of 4 µs and a fall time of 20 µs.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrated base terminal on the phototransistor for enhanced switching speed control and sensitivity adjustment
• High insulation voltage rating of 4170 Vrms ensuring robust signal isolation between input and output circuits
• Wide operating temperature range extending from -40°C to 100°C for reliable performance in varied environments

Transistor, Photovoltaic Output Optoisolators Applications

• General-purpose signal isolation in industrial control systems
• Interface circuits for microprocessors and logic families
• Power supply feedback loops requiring galvanic isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix designation against official documentation, as variations may exist regarding packaging or compliance certifications. Confirm that the procurement channel sources directly from authorized distributors to ensure component authenticity and traceability. Cross-reference the manufacturer part number with the latest datasheet revision to validate all electrical specifications before integration into design projects.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a phototransistor output with a base connection is required for improved switching characteristics compared to standard variants. Ensure the application demands an isolation voltage of at least 4170 Vrms and a collector-emitter breakdown voltage of 70 V. Verify that the package type and pinout configuration align with the target PCB layout requirements.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the CNY17 series of transistor output optocouplers manufactured by onsemi. The series utilizes an AlGaAs LED source paired with silicon phototransistors to provide high reliability and fast response times. The CNY171M specifically denotes the variant with a base terminal, distinguishing it from other models in the family that lack this feature.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Compatible substitutes include the CNY171VM and CNY171M from onsemi, which share identical electrical characteristics and pin configurations. Other generic equivalents may be considered if they meet the 70 V BVCEO and 4170 Vrms isolation requirements while maintaining the same DIP-6 package form factor.

Transistor, Photovoltaic Output Optoisolators FAQ

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

The base terminal allows for external biasing or pull-down connections, enabling faster switching speeds and providing greater control over the output state compared to floating-base designs.

What is the maximum collector-emitter voltage rating?

The CNY171M has a minimum collector-emitter breakdown voltage (BVCEO) of 70 V, making it suitable for applications requiring moderate voltage isolation levels.