MXL5KP11AE3 Circuit Protection

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TVS (Transient Voltage Suppressor) diodes are a popular protection solution for electrical and electronic components, equipment, and systems that are vulnerable to transient voltage spikes caused by electrostatic discharge, lightening, electromagnetic interference, power cross, or switching surges. The MXL5KP11AE3 is a series of TVS diodes designed to protect components from short-term over-voltage events. It features a maximum clamping voltage (VC) of 14.8V, maximum peak pulse power (PPK) of 600 watts, and minimum breakdown voltage (BV) of 12V. In this article, we will discuss the application field and working principle of the MXL5KP11AE3.

Application Field

MXL5KP11AE3 is designed to be used in applications such as automotive electronics, industrial, communication systems, consumer electronics, and computers. It is also widely used in harsh environments, including the outdoors, in high-humidity or high-temperature applications. These diodes provide superior performance and are therefore well-suited for protecting components from transient voltage spikes.

Working Principle

TVS diodes like the MXL5KP11AE3 work by clamping the voltage spike to a safe level. When the voltage across the TVS diode increases to a predetermined voltage level (the breakdown voltage, BV), the diode triggers and places a low current path between the two terminals. This low current then clamps the peak of the voltage spike to the diode’s rated clamping voltage (VC). The current then decays as the voltage returns to the normal level.

The breakdown voltage of the MXL5KP11AE3 is 12V and its clamping voltage is 14.8V. This means that when the voltage across the diode reaches 12V, the diode will trigger and clamp the voltage at 14.8V. The rated peak pulse power (PPK), which is 600W, is the maximum power that the diode can handle before it breaks down. It is important to remember that the peak pulse power should not exceed more than twice the rated clamping voltage.

Unlike a Zener diode, the TVS diode does not have a constant voltage drop. Instead, it has a dynamic voltage drop. This is because the amount of voltage that is clamped depends on the energy of the transient voltage spike. This means that when there is a stronger voltage spike, more energy is required to clamp the voltage, and hence the voltage drop across the diode increases. The higher the voltage drop, the more power is dissipated.

In summary, the MXL5KP11AE3 is a TVS diode that is designed to protect components from transient voltage spikes. It has a maximum breakdown voltage of 12V, a clamping voltage of 14.8V, and a peak pulse power of 600W. It is suitable for applications in automotive, industrial, communication systems, consumer electronics, and computers. The diode works by clamping the voltage spike to a safe level and dissipating the excess energy as heat.

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