EL817(S)(A)(TA)

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Optoisolators are devices to isolate two circuits electrically. The EL817(S)(A)(TA) isolator series belongs to a group of optoisolators known as Transistor, Photovoltaic Output. This devices contain a gallium arsenide infrared-emitting diode (IRED) to produce light, a photo-sensitive surface, and an open-collector transistor for output. Depending on the specific model, 2 or 4 channels can be provided in a single package.

The application field for EL817(S)(A)(TA) optoisolators include wide range of industrial and automotive industry, such as automotive control systems, motion control systems, industrial automation systems, protection circuits, DC-DC converters, smart wiring systems, lighting systems, and HVAC systems.

The working principle of EL817(S)(A)(TA) optoisolators is relatively simple. The IRED produces light, and its light sensitive surface converts it into electric current, which is then amplified by the output open-collector transistor. Since all electrical connections happen through the light emitted by the IRED, and due to the open-collector design, a complete electrical isolation is achieved between the input and output circuitry.

The EL817(S)(A)(TA) series of optoisolators comes in several versions. The S version has an average response speed of 3ms. The A version has an average response speed of 5ms. The TA version has an input current as high as 500A. Depending on the application, the model of optoisolator should be chosen appropriately.

The EL817(S)(A)(TA) series of optoisolators is designed for operation over a wide range of temperatures, from -40°C up to 125°C. It also surfaces has tracking index of 750V, allowing a wide range of applications. Additionally, voltage drop is minimized due to the high-speed switching performance across temperature.

Overall, the EL817(S)(A)(TA) series of optoisolators provides a robust solution for a wide range of automotive and industrial applications. With its wide temperature range, voltage drop minimization, and high-speed switching, it is a perfect choice for any application that requires electrical isolation between two circuits.

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