EL816(M)(A)

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Optoisolators are devices used to implement electrical isolation between two circuit elements. These devices use an optical or opto-electrical barrier to transmit information between the isolated circuits. EL816(M)(A) optoisolator is a photon-coupled transistor output device that provides electrical isolation between two circuits. It consists of an infrared LED optically coupled to an NPN silicon phototransistor.

The EL816(M)(A) optoisolator is specifically designed for applications where high electrical isolation is required, such as noise insensitive power circuit interfaces, switching power supplies, communication systems, analog sensing, and instrumentation.

EL816(M)(A) optoisolator provides the isolation voltage of 5000 Vrms. It offers high level of optical input-output coupling, making it ideal for applications requiring transfer of low-level signals. The device enables operation over a wide supply voltage range from 4.5V to 40V. It also has high speed switching, with a CTR (Current Transfer Ratio) of 200% at IF=10mA.

The working principle of EL816(M)(A) optoisolator is simple. When the input voltage is applied to the LED emitter, the electrons recombine with the holes in the LED and photons are emitted in the process. These photons are collected by the collector of the phototransistor, which then produces large currents in the transistors base-emitter circuit, activating the transistor. As a result, an electric current flows through the output of the phototransistor.

EL816(M)(A) optoisolator is a highly reliable and robust device ideally suited for applications requiring high isolation. Its versatile performance enables it to be used in a variety of applications such as motor control, switching power supplies, digital circuits, logic circuits, communication systems and other applications where electrical isolation is important. The device is available in dual packages, making it suitable for applications requiring two opto-couplers.

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