IL4118-X017

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Optoisolators or optocouplers are a type of input/output electronic devices comprising an LED and a phototransistor, which provide electrical isolation between a controller and its peripheral devices. The IL4118-X017 is an optoisolator of the type “Triac, SCR Output”, providing up to 5000Vrms isolation and operated by the most common electrical mains voltage, from 100V to 250V AC.This optoisolator is a thyristor output optoisolator, which offers high surge current capability up to 9A and guaranteed capability to turn off a bidirectional thyristor. It offers an advanced way to protect circuits from high voltages and high currents. The electrical characteristics of the IL418-X017 make it suitable for AC mains operation. The IL4118-X017 optoisolator is mainly used in applications such as motor control, dimmers, line voltage lamp, solenoid, and valve control, power supply control, lighting control, and building automation. It can also be used in home appliances such as washing machines, air conditioners, and refrigerators.The working principle of IL4118-X017 optoisolator is based on the fact that the LED receives a microsecond pulse of current, emitting infrared light, which will activate the phototransistor. At this moment, an electric current flows from the emitter to the collector of the phototransistor, allowing the low-voltage input to switch on the bidirectional thyristor. This will ensure that no current flows between the high-voltage and the controller or load circuit.The LED is also protected from current and voltage surges. The IL4118-X017 optoisolator is equipped with a voltage damper that limits the voltage across the components. If a positive or negative voltage surge occurs, the LED will not be damaged.The IL4118-X017 optoisolator also offers very high immunity to electromagnetic interference (EMI). The EMI shield minimizes the amount of interference that passes between the input and output circuitry. This optoisolator also has an extremely low leakage current, which helps to increase the life cycle of the device.In conclusion, the IL4118-X017 optysolator is a highly-versatile, high-performance, and reliable optoisolator, designed to provide an effective solution for the control of various AC mains applications. It is capable of providing up to 5000Vrms isolation, EMI shielding, and surge protection, as well as very low leakage current. This optoisolator is the perfect choice for applications that require reliable isolation, such as motor control, lighting control, and home appliances.

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