MP4KE68AE3

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Transient Voltage Suppressors (TVS) are diodes used to protect electronic equipment from high-energy surges or spikes. The MP4KE68AE3 from Littelfuse is a particular TVS diode designed for automotive applications. In this article, we will look at the application field and working principle of the MP4KE68AE3.

The MP4KE68AE3 is designed for vehicle applications, specifically for the protection of low voltage circuits. This diode is capable of suppressing voltage transients that exceed the peak pulse power of 2.2 kW (1.5 A @ 1500 V). The diodes are designed to withstand high temperatures ranging from -55 °C to +175 °C, making them ideal for use in modern car engines. Other features include low reverse leakage and low capacitance for optimal electrical performance.

The working principle of the MP4KE68AE3 is based on avalanche breakdown. This occurs when a large number of electrons are pushed through the junction of the diode at a relatively high voltage, creating an avalanche of current. This large surge of current is absorbed by the diode, protecting the circuit from overvoltage. The diode is protected against further overloads thanks to its low capacitance which prevents it from storing too much charge.

The MP4KE68AE3 is a versatile TVS diode designed for automotive and other applications. Its combination of high temperature tolerance, low reverse leakage, and low capacitance make it an ideal solution for protecting low voltage circuits from surges or spikes. The device also works on the principle of avalanche breakdown, providing additional protection against voltage transients. All of these features make the MP4KE68AE3 a reliable and cost-effective solution for protecting circuits.

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