CNY172

Transistor, Photovoltaic Output Optoisolators Overview

The CNY172 is a single-channel transistor output optocoupler manufactured by onsemi. It integrates a gallium arsenide infrared emitting diode with an NPN phototransistor in a 6-pin DIP package. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a forward current of 90 mA, and an isolation voltage of 7500 Vrms. The device features a typical rise time of 6 µs and fall time of 24 µs, with a power dissipation rating of 260 mW. Operating temperatures range from -55°C to +100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using an infrared LED and phototransistor pair.
• Features an NPN phototransistor output configured for standard switching applications.
• Includes a base terminal on the phototransistor to allow for external biasing or speed adjustment.

Transistor, Photovoltaic Output Optoisolators Applications

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

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix (e.g., FVM, VM) against the required package type and insulation rating, as variants exist with different isolation voltages and mounting styles. Confirm RoHS compliance status through official datasheets, as older stock may differ. Check current availability as some versions are marked discontinued or have limited supply. Ensure the selected variant matches the PCB footprint requirements for either through-hole or surface-mount installation.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a standard NPN output optocoupler with a DIP-6 package is required. Verify that the 70 V collector-emitter voltage meets the load requirements. Consider the 7500 Vrms isolation rating for safety standards compliance. Compare with the CNY172SR2M if surface-mount packaging is preferred, noting the difference in isolation voltage ratings between DIP and SMD variants.

Transistor, Photovoltaic Output Optoisolators Part Context

The CNY172 belongs to the CNY17 series of transistor output optocouplers produced by onsemi. This series is widely used for general-purpose isolation tasks. The part number typically denotes the through-hole DIP-6 configuration, distinguishing it from surface-mount variants like the CNY172FVM which may carry different insulation specifications.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The CNY172SR2M serves as a surface-mount alternative within the same family, though it specifies a lower isolation voltage of 4170 Vrms compared to the 7500 Vrms of the DIP version. Direct pin-to-pin replacements should be verified against specific isolation and package requirements.