FOD817B300

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• FOD817B300 Application Field and Working Principle

  Optoisolators, also known as opto-insulators, are passive electrical devices utilized to separate electrical circuits through the principle of optical isolation. They offer a high level of electrical and magnetic immunity between two electronic circuits. For added protection, they are also designed in such a way that prevents electric surges or any other form of overvoltage from one section to the other. The FOD817B300 optoisolator is one such device, which operates on the Photovoltaic Output principle.

  Essentially, Photovoltaic Output optoisolators require the input electrical current to be activated by a light beam, such as an LED. This LED emits an optical signal when it receives power, which then triggers the output device. This output is a high-voltage, fast-switching device, like an MOSFET or BJT, which can be used to drive external loads. Furthermore, the FOD817B300 offers low quiescent current, and can be used to provide insulation between two circuits up to 500Vrms. When this light beam is no longer received, the output connections between the FOD817B300 and the external circuit are shorted across one another, creating a high-isolation barrier.

  Due to its low quiescent current and optical isolation, the FOD817B300 can be found in a variety of applications. One of the most common is in the automation industry, where it is used to relay output signals from a master controller to external I/O devices. As it can withstand temperatures of up to 110°C without degrading, it is perfect for applications involving high-temperature processes, such as the manufacturing of pharmaceuticals or industrial equipment. It is also used frequently in high-reliability monitoring, communication, and control circuits.

  The FOD817B300 optoisolator is a must-have addition to any system that requires high-efficiency, reliable optical isolation. Its Photovoltaic Output feature will provide designers with a reliable way to ensure that the electrical circuit is protected from surges or other overvoltage, while maintaining low quiescent current. With its wide range of applications and its ability to withstand hot temperatures, the FOD817B300 is one of the most reliable optoisolators on the market today.

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