4N35-X019T

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Optoisolators provide electrical isolation between input and output signal. They are available in different packages, ranging from non-hermetic, DIP, SIP, SMD, up to Fiber Optic links. The 4N35-X019T optoisolator belongs to the Transistor Photovoltaic Output type, that works by converting electrical signals into optical light signals that are optically isolated and then converted back to electrical signals at the other end.

The main components of the 4N35-X019T opto-isolator are an LED that generates a light signal, a photodiode that detects the light signal and a transistor output driver (NPN or PNP type). It features a 4kV (4000VAC) isolation voltage with 2 contacts: the input side and the output side. The input side includes the LED and the photo diode, while the output side contains the transistor driver. The device is in a compact SMD package that allows for easy surface mount in tight locations.

The optoisolator operates by generating a current in the photo-diode, when the LED is activated by an external voltage signal. This current would be amplified by the internal gain and drives the output transistor, providing an electrical output signal which is electrically isolated from the input. The isolation voltage provided by the 4N35-X019T is an impressive 4kV, making it suitable for higher voltage applications.

Although the 4N35-X019T optoisolator is designed primarily for use as an isolation interface in a variety of systems, its high isolation voltage and robust construction make it suitable for a variety of applications. It is widely used in industrial automation, medical equipment, automotive, telecommunications and other automated systems which require a reliable isolation between the input and the output circuits.

The 4N35-X019T is also a good choice for high-frequency switching applications, such as in switching power supplies. The output can be used to switch transistors to control the charge and release of the power supply. Additionally, it can be used in circuits, such as instrumentation amplifiers, for providing a high impedance path between the input and the output stages.

In summary, the 4N35-X019T optoisolator is a high-performance device that provides an isolation voltage of 4kV. It is available in a compact SMD package and is suitable for a variety of applications. It can be used in industrial automation, medical equipment, telecommunications systems, and high-frequency switching applications.

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