Isolation and signal transfer for industrial control
The onsemi CNY17F2SR2VM is a single-channel optoisolator with a transistor output, rated for 4170Vrms isolation between input and output. This isolation level suits applications where galvanic separation is required between a low-voltage control side and a higher-voltage load side, such as in PLC digital input modules, motor drive feedback circuits, or industrial sensor interfaces.
CTR and switching performance
Switching speed is defined by a 2µs typical turn-on time and 3µs typical turn-off time, with rise and fall times of 4µs and 3.5µs maximum respectively. These figures place the CNY17F2SR2VM in the medium-speed class for optoisolators, adequate for 10-100 kHz signal isolation in industrial fieldbus or discrete I/O applications where sub-microsecond edge rates are not required.
Output drive and package
The output transistor can handle up to 70V collector-emitter voltage and 50mA continuous collector current, with a maximum saturation voltage of 400mV at rated current. This output stage can directly drive a downstream logic gate input or a small relay coil without an additional buffer transistor. Housed in a 6-SMD gull wing package (supplier device package 6-SMD), the CNY17F2SR2VM is intended for surface-mount assembly. The gull wing leads provide a visible solder joint for inspection, and the package footprint is compatible with standard pick-and-place equipment.