ACPL-K49U-500E

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ACPL-K49U-500E is a type of optoisolator - transistor, photovoltaic output, a three-terminal device with a photo- transistor as the output device. The device is used to electrically isolate low voltage logic signals from higher voltage system and/or motor control circuits. This device isolates and amplifies signals from low voltage logic circuits, such as microprocessors, for use by higher voltage control circuits, like industrial motor controllers.

The device is available in both surface mount and through-hole versions. The input part of ACPL-K49U-500E consists of an optically coupled LED located in an integrated package. The LED is connected in reverse-biased configuration by an external current limiting resistor. The input part of the device is operated at a drive current of 5mA. Output of the device is a NPN photo-transistor.

The ACPL-K49U-500E is used in various applications like Industrial process controls, motor speed control circuits, switch mode power supplies, instrumentation and other industrial applications. It can also be used in automotive and consumer electronics. The device is useful in noise prone industrial and medical applications due to its high temperature performance and noise immunity. The device is also suitable for air or water tight applications.

The working principle of the ACPL-K49U-500E is simple. This device works on the principle of opto-coupling, also known as opto-isolator. It transfers a current signal from one circuit, the input circuit, to another, the output circuit, without direct electrical contact between them. This isolates the two circuits by using a light emitting diode (LED) and a phototransistor. When the LED is driven by an input signal, an electrical current is generated, which is then converted back to a corresponding output signal by the phototransistor. This allows the input signal to be isolated from the output circuit.

The ACPL-K49U-500E has some advantages over other optoisolators. It offers superior high temperature performance and high noise immunity due to its improved reverse voltage protection. It also provides better radiation immunity and noise reduction. The device is also available in two packaging options, surface-mount and through-hole packages, providing more design options for different applications. Furthermore, the device has low saturation voltage and high direct current transfer ratio, making it suitable for higher efficiency in circuits.

In conclusion, the ACPL-K49U-500E is a type of optoisolator - transistor, photovoltaic output device which is used to electrically isolate low voltage signals from higher voltage systems and/or motor control circuits. It offers superior high temperature performance, noise immunity, radiation immunity and noise reduction. The device is available in two packaging options, surface-mount and through-hole packages, providing more design options for different applications. Due to its low saturation voltage and high direct current transfer ratio, the device is suitable for higher efficiency in circuits, making it suitable for various industrial applications.

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