CNY17F1TM

Optoisolators are devices used to isolate one circuit from another, usually electrically, while allowing them to exchange signals. The CNY17F1TM is a optoisolator device in the form of a Transistor Photovoltaic Output (TPO) packaged in a four-lead TO-92 enclosed package. It is designed to be used with low-power optocoupler applications such as in solid-state relays, analog and logic interface circuit, over current sensing circuits, and non-inverting logic circuits.

The CNY17F1TM consists of a Gallium Arsonide (GaAs) infrared emitting diode (IRED) optically coupled to a transistor output stage. The CTR of the CNY17F1TM ranges between 10 to 600%, depending on how much the input current is increased. The typical peak collector current of the CNY17F1TM is 50mA, and the recommended peak emitter current is 10mA. The CTR decreases with increasing the input current, up to a certain point where saturations start to occur.

The working principle of the CNY17F1TM is based on the photovoltaic effect. When the LED of the CNY17F1TM is illuminated by the input current, photons are created which are absorbed by an active junction of the phototransistor. This generates electron-hole pairs, which are then collected by the base of the robotic phototransistor. This triggers the base to turn on, and the collector current flows, which in turn produces the output voltage at the collector terminal.

The CNY17F1TM has many applications, due to its low power consumption, wide variation of CTR, and high isolation voltage. Firstly, it can be used in inverting logic circuits as an isolating interface. It can also be used as a solid-state relay. As the CNY17F1TM can be triggered with a very low input current, it switching time is relatively low, thus making it ideal for applications which require fast switching times. In addition, the CNY17F1TM can also be used in overcurrent sensing circuits, and can be coupled with Hall Effect devices for detecting magnetic fields.

In conclusion, the CNY17F1TM is a versatile optoisolator device packed in a convenient four-lead TO-92 enclosed package. It is designed for use in low-power optocoupler applications, such as logic and analog interfaces, solid-state relays, overcurrent sensing circuits, and non-inverting logic circuits. It has a wide range of applications due to its low power consumption, wide variation of CTR, and high isolation voltage.