MPLAD15KP7.5AE3 Circuit Protection

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Thyristor transient voltage suppressor diodes (TVS–Diodes) are widely used in today\'s electronics applications as a protective element against high voltage surge pulses due to electrostatic discharge or switching of high-energy loads. The MPLAD15KP7.5AE3 is an example of one such device, designed for suppressing transients up to 15kV (peak) with a breakdown voltage of 7.5V and peak off-state current of 3A. In this article, we will review the application fields and working principles of the MPLAD15KP7.5AE3.

The MPLAD15KP7.5AE3 is a TVS diode that has a breakdown voltage of 7.5V and a peak off-state current of 3A. It is suitable for automotive applications, home appliance equipment, computers, data-processing equipment, consumer electronics, telecom equipment, and other industrial applications requiring transient protection from electrostatic discharge and high energy load switching. This device is specially designed for high-energy transients; it can withstand pulse durations of up to 10 microseconds with a peak voltage of 15kV. The low capacitance characteristics of this device (3.5pF typical) makes it particularly attractive for protecting transmission lines.

The working principle of the MPLAD15KP7.5AE3 is similar to that of a traditional zener diode. When an AC or DC voltage is applied across the terminals of the device, the zener junction breaks down and thereby forms a metallic connection between them. This connection then acts as a “short-circuit”, effectively producing a low impedance “short” across the terminals. This allows the excess voltage to be diverted away from the protected component and dissipate harmlessly into the ground. Upon transient cessation, the diode permits the residual charge to dissipate, thereby restoring normal electrical conditions.

The MPLAD15KP7.5AE3 also provides low-clamping voltage and fast reverse recovery time for enhanced protection. This device has a junction capacitance of 3.5pF, a breakdown voltage of 7.5V, and a peak off-state current of 3A. Since it is a uni-directional device, it will only protect against transients on one direction of current. For instance, it will only protect against transients of 1-10 microseconds on the positive voltage side.

As a protective element from high voltage surges, MPLAD15KP7.5AE3 is widely used in industries such as automotive, home appliances, consumer electronics, and telecom equipment. This TVS diode is suitable for applications requiring transient protection from electrostatic discharge and high-energy load switching transients. It provides low clamping voltage, fast reverse recovery time, and low capacitance characteristics. It only works against transients on the positive voltage line, and has a breakdown voltage of 7.5V and peak off-state current of 3A.

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