MPLAD15KP8.0AE3 Circuit Protection

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TVS (Transient Voltage Suppressor) diodes are important components towards providing protection to electric circuits, often dissipating high-voltage and high-energy transients. In the context of this article, we will discuss the feature of the MPLAD15KP8.0AE3 diode and its use-case in an electric system.

MPLAD15KP8.0AE3 Overview

The MPLAD15KP8.0AE3 is an uni-directional and esd protection diode. It is a low capacitance, unidirectional bi-directional Transient Voltage Suppression (TVS) Diode, with an absolute peak pulse power of 15kW. The TVS diode is designed to eliminate electromagnetic interference (EMI) and radio frequency interference (RFI). It also provides protection against electrostatic discharge (ESD) by clamping the voltage levels through the Zener diode. In general, the MPLAD15KP8.0AE3 offers good electrical performance at both forward and reverse voltage ranges.

Application Field

The MPLAD15KP8.0AE3 is a versatile part, suitable for many applications including automotive, computer and consumer electronics, telecommunications, industrial, and medical. It is suitable for general-purpose protection against electrostatic discharge, such as used in HDTV, LCD/PDP/LED monitors, notebook computers, printers, etc. Additionally, the MPLAD15KP8.0AE3 can be used to protect external USB ports, HDMI ports, I/O interfaces, data and communication lines, etc.

Working Principle

The MPLAD15KP8.0AE3 operates by using the diode’s forward bias junction’s capacitance characteristics in reverse bias voltage conditions. The diode’s avalanche current capacity is proportional to the junction capacitance of the diode’s forward bias junction. When there is a voltage spike from an ESD event, the forward bias junction accumulates a charge imbalance, causing the diode to act as a short-circuit, allowing the current to pass through the diode without a significant voltage drop. This allows the voltage spike to be dissipated without significant current passing through the circuit.

The MPLAD15KP8.0AE3 also operates when higher frequencies occur, using its reverse bias capacitance. The avalanche current of reverse bias junction capacitance is generated at the given voltage level. The circuit’s EMI / RFI noise is filtered out by the diode, due to the junction capacitance change. This occurs when a charge imbalance is formed by the diode’s reverse bias junction.

Conclusion

The MPLAD15KP8.0AE3 is a uni-directional and esd protection diode. It is suitable for many applications including automotive, computer and consumer electronics, telecommunications, industrial, and medical. It provides protection against electrostatic discharge, such as used in HDTV, LCD/PDP/LED monitors, notebook computers, printers, etc. In general, the MPLAD15KP8.0AE3 offers good electrical performance at both forward and reverse voltage ranges, dissipating the EMI/RFI noise due to its reverse bias junction capacitance.

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