CNY172SM

Transistor, Photovoltaic Output Optoisolators Overview

The CNY172SM is a single-channel transistor output optocoupler manufactured by Fairchild Semiconductor, now part of onsemi. It integrates a Gallium Arsenide infrared emitting diode with an NPN phototransistor in a surface mount DIP-6 package. Key electrical parameters include a minimum collector-emitter breakdown voltage (BVceo) of 70 V and a maximum forward current of 60 mA. The device offers a nominal current transfer ratio of 63% and supports an insulation voltage of 4170 Vrms. Operating temperatures range from -55°C to +100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates a Gallium Arsenide IRED with an NPN phototransistor for signal isolation
• Provides high collector-emitter breakdown voltage suitable for robust circuit protection
• Available in a compact surface mount DIP-6 package for automated assembly

Transistor, Photovoltaic Output Optoisolators Applications

• Power supply regulators
• Digital logic inputs
• Microprocessor inputs
• Appliance sensor systems

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the manufacturer status as Fairchild Semiconductor has been acquired by onsemi; confirm the specific suffix 'SM' corresponds to the surface mount variant. Ensure compliance with RoHS directives and check for UL or VDE recognition requirements relevant to the target application's safety standards before finalizing procurement specifications.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a surface mount solution is required for galvanic isolation between low-voltage control circuits and higher-voltage loads. The 70V BVceo rating distinguishes it from lower-voltage variants within the CNY17 series. Consider the 63% typical CTR for driving standard logic levels without excessive input current.

Transistor, Photovoltaic Output Optoisolators Part Context

The CNY172SM belongs to the CNY17 series of phototransistor optocouplers. This family typically includes through-hole variants like the CNY172FVM. The SM suffix specifically denotes the surface mount configuration, differentiating it from the standard DIP packages while maintaining similar internal semiconductor structures and functional characteristics.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes may include other CNY17 series surface mount variants such as CNY171SM or CNY173SM, provided the pinout and electrical ratings match the design requirements. Verify that any replacement maintains the required isolation voltage and current transfer ratio.