MXPLAD18KP130AE3

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Transient voltage suppression diodes, more commonly known as TVS diodes, are a form of voltage clamping device used to protect sensitive electronics from destructive over-voltage surges, electro-static discharges, and lightning strikes. The MXPLAD18KP130AE3 is a popular device in this category developed by Taiwanese semiconductor manufacturer Monolitic Power Systems. It is a unidirectional, low capacitance diode commonly used in communication, computer, automotive, and industrial equipment. In this article, we will examine the application and working principles of the MXPLAD18KP130AE3.

The MXPLAD18KP130AE3 is designed to be used in a variety of applications for suppressing high voltage transients. One example is the protection of on-board memory devices and logic circuits in computers. It is also used in networking and telecommunications equipment, such as telephone line connections, where high voltages are likely to be experienced. Furthermore, it is beneficial in the protection of power supplies from potential short circuits due to lightning strikes or electro-static discharges.

The MXPLAD18KP130AE3 contains two diodes and one zener diode. The two diodes are used for clamping, while the zener diode helps to absorb and dissipate the transients to prevent them from being propagated downstream. Furthermore, the device also contains a series resistor to limit the current flowing through the device and to minimize stress on the voltage clamping element.

The MXPLAD18KP130AE3 can provide protection from ESD, lightning, and surge pulses up to +18kV for unidirectional transients. It is rated to dissipate up to 130 watts of power per device, with its clamping voltage ranging from 5 to 26 volts. Furthermore, it has an operating temperature range of -55 to 125 degrees Celsius and a storage temperature range of -55 to 150 degrees Celsius. Its low capacitance design (25pF maximum) ensures that it does not interfere with high speed signal transmissions.

The working principle of the MXPLAD18KP130AE3 is fairly straightforward. In its most basic form, the device consists of two clamping diodes in series with a series resistor, and a zener diode connected in parallel. When a transient voltage is applied across the device, the two diodes function as surge limiters and clamp the voltage to the device\'s knee voltage. The series resistor helps to limit the current flow through the device, thus minimizing stress to the voltage clamping element. Lastly, the zener diode helps to dissipate the transient and prevent it from propagating downstream.

In summary, the MXPLAD18KP130AE3 is a popular device from Monolitic Power Systems used for suppressing high voltage transients in a variety of applications. It contains two clamping diodes, a zener diode, and a series resistor. Its low capacitance design makes it suitable for use in high speed communications, while its clamping voltage and power rating make it versatile enough to be used in a variety of other applications.

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