CNY17F3M

Overview

The CNY17F3M is a single-channel phototransistor optocoupler featuring a gallium arsenide infrared emitting diode coupled to an NPN phototransistor. It provides high collector-emitter breakdown voltage (BVCEO) and operates with a DC input. Key electrical parameters include a maximum forward voltage of 1.65V, a typical rise time of 6µs, and a typical fall time of 24µs. The device supports a maximum input current of 60mA and offers a current transfer ratio ranging from 100% to 200%. It functions within a temperature range of -40°C to +100°C.

Feature Summary

• High collector-emitter breakdown voltage capability for robust isolation
• Low coupled capacitance for effective noise immunity
• Single channel configuration with NPN phototransistor output

Applications

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

Procurement Notes

Verify the specific suffix 'M' indicates the tape-and-reel or bulk packaging variant as defined by onsemi documentation. Confirm that the 4170 Vrms insulation rating aligns with your system's safety requirements. Ensure the 100-200% CTR range meets the drive requirements of your downstream logic. Cross-reference the pinout for the 6-pin DIP package to prevent mounting errors during assembly.

Selection Notes

Select this component when high BVCEO is required alongside standard phototransistor output characteristics. The 6-pin MDIP package facilitates through-hole mounting for applications needing mechanical stability. Consider the 6µs rise time for moderate-speed digital signaling rather than high-frequency data transmission. Verify that the 70V collector-emitter voltage rating exceeds the maximum load voltage in the target circuit design.

Part Context

This part belongs to the CNY17 series of optocouplers, which are widely used for general-purpose isolation. The CNY17F3M specifically denotes the variant with a 100-200% Current Transfer Ratio. It is manufactured by onsemi, a leading provider of intelligent power and sensing technologies. The series is known for its reliability in consumer and industrial electronics.

Replacement Considerations

Direct substitutes include CNY17F3SM for surface-mount applications with similar electrical characteristics. Other compatible variants within the family include CNY17F1 and CNY17F2, though their current transfer ratios differ. Always verify pin compatibility and insulation voltage ratings before substituting.