CNY171FM

Transistor, Photovoltaic Output Optoisolators Overview

The CNY171FM is a single-channel phototransistor output optocoupler from onsemi, designed for general-purpose isolation applications. It features an NPN phototransistor with a base lead for enhanced sensitivity and switching control. The device provides high collector-emitter breakdown voltage (BVceo) and operates within a temperature range of -55°C to +100°C. Key electrical parameters include a maximum forward current of 60 mA, a typical forward voltage of 1.65 V, and a minimum current transfer ratio of 80%. It offers an isolation voltage of 4170 Vrms and is housed in a 6-SMD Gull Wing package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrated base lead on the phototransistor output for improved switching speed and sensitivity control
• High collector-emitter breakdown voltage capability suitable for robust isolation requirements
• Wide operating temperature range supporting demanding industrial environments

Transistor, Photovoltaic Output Optoisolators Applications

• General-purpose signal isolation in industrial control systems
• Switching power supply feedback loops
• Microcontroller input/output isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'FM' against official datasheets to confirm the SMD gull-wing package variant. Ensure compatibility with surface-mount assembly processes. Confirm RoHS compliance status through manufacturer documentation prior to integration.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when surface-mount packaging is required alongside high BVceo performance. The integrated base allows for faster turn-off times compared to standard variants without base leads. Verify that the 80% minimum CTR meets the circuit drive requirements under all operating conditions.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the CNY17 series of transistor-output optocouplers. It shares functional similarities with through-hole variants like the CNY171 but utilizes a surface-mount form factor. The series is widely recognized for cost-effective isolation solutions in consumer and industrial electronics.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct pin-compatible replacements may include other CNY17 series SMD variants such as CNY172FM or CNY173FM, provided the specific Current Transfer Ratio and BVceo ratings align with the design specifications.