CNY17-3X009T

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Optoisolators - Transistor, Photovoltaic Output

CNY17-3X009T is a DIP-4 Photovoltaic Output Optoisolator, also know as a Photovoltaic Isolated Transistor Output Optoisolator. It can be used to isolate inputs and outputs in circuits where danger from electric shock is present, or to provide protection against ESD. It is most often used in the industrial controls, consumer products, and automotive industries.

The CNY17-3X009T consists of an infrared LED coupled with a phototransistor. The LED is used to modulate light, which is then transmitted across a gap between the LED and the phototransistor, forming a photovoltaic output isolation barrier. As the LED emits light, it causes the phototransistor to switch closed and triggering a signal or action. When the LED is no longer emits light, the phototransistor will open, thus disabling the effect. This provides the isolation required between two circuits.

The optical gap between the LED and the phototransistor is important for proper functioning. If the gap is too large, or if the gap contains dust or other obstructions, this will cause a decrease in the switching speed of the phototransistor. If the gap is too small, then this will likely cause an increase in output current between the two circuits, leading to potential damage.

CNY17-3X009T operates with a peak forward current of 50 mA, a forward voltage of 1.2 V, and a switching speed of 10MHz. With a low forward current, high isolation voltage of 5kV, and a minimum breakdown voltage of 80 V, CNY17-3X009T is one of the most reliable photovoltaic opto isolator chips on the market.

CNY17-3X009T has a wide variety of applications including automotive, white goods, industrial and consumer electronics. It is used in capacitive touch sensing, printing, modem connections, programmable logic controllers, data input/output, and various other areas. It is also often used to provide protection against high voltage spikes and to help ensure the accuracy and safety of signals.

In summary, the CNY17-3X009T Photovoltaic Output Optoisolator allows for isolation between two circuits in order to safely control signals and prevent electric shock. Its low current, high isolation voltage, and high breakdown voltage makes it a great choice for many applications, including automotive, white goods, industrial and consumer electronics.

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