EL817(S)(TA)

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Optoisolators play a fundamental role in protecting electronic circuits from unwanted voltage transients and other electrical disturbances. The EL817(S)(TA) optoisolator is specifically designed to provide an insulated input/output path between two circuits. This Transistor Photovoltaic Output optoisolator is commonly used in systems that require high noise immunity and high isolation capability.

The EL817(S)(TA) optoisolator features a 6-pin dual in-line package (DIP) and utilizes a transistor sinking output. Internal components include an input LED light source, a 2N2222 transistor, and a phototransistor. In the OFF state, the internal LED is turned off and no current passes through the photo transistor, resulting in an open circuit output. In the ON state, the LED is powered, illuminating the phototransistor, allowing it to conduct and closing the output circuit.

The optoisolator has a wide range of applications in various types of devices, ranging from electrical and electronic controls to automotive and process control systems. It is especially suitable in systems where high noise immunity and input/output isolation is required. In automotive applications, EL817(S)(TA) optoisolators are commonly used to divide circuits into two sections for power and signal, preventing interference or electrical noise from passing between them.

The EL817(S)(TA) optoisolator also plays an important role in the protection of microcontrollers against power and signal noise. It can be used as an input to protect digital circuits from isolated high voltage sources, or as an output to protect sensitive logic circuits from inductive loads. The optoisolator can be used in conjunction with an external circuit, such as a transistor drive circuit or a Zener diode, to provide additional protection.

The EL817(S)(TA) optoisolator provides excellent performance and is rated for a maximum continuous isolator current of 10 milliAmps (mA). It is also rated for a maximum working voltage of 300 Volts (V) and a maximum on-state voltage drop of 0.7V. The optoisolator can function temperatures from -35°C to 85°C and has an insulation resistance between the input and output terminal of greater than 10 Megaohms (MΩ).

The EL817(S)(TA) optoisolator is an important component in the field of electronics and can be used in a variety of applications. Its low cost and easy availability make it one of the most popular optoisolators available. With its excellent noise immunity and insulation measures, the EL817(S)(TA) optoisolator is ideal for use in high voltage and high noise applications, ensuring reliable and safe isolation between the input and output circuits.

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