5KP54

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TVS – Diodes

A Transient Voltage Suppressor Diode (TVS) is a two-terminal voltage regulator device functioning as a unidirectional conductive rectifier. It acts like a conventional diode, conducting when the signal voltage is forward biased and blocking when the voltage is reverse biased. A successful TVS device must be able to reliably block transient voltages such as electrostatic discharge (ESD). TVS Diodes are often an integral part of a circuit protection strategy and can be used with many other low and high current devices to build a total system protection solution.

5KP54 Application Field and Working Principle

The 5KP54 is a ESD Protection Diode that is suitable for ESD and Lightning Protection on a 12V system. It is offered in an RoHS Compliant 0603 SMT package and is corrosion resistant for up to 2000hrs. The 5KP54 features low leakage current and low capacitance. It functions as an ESD protection diode by protecting a wider voltage range in a single package. The device typically exhibits a clamping voltage of 18V and peak pulse current of 5.4A (8/20 μs). Further, these devices are designed to be an ultra-fast shunt regulator that provides a low clamping voltage solution for protecting sensitive components from transient voltage spikes on the input signal lines. Also, these devices are RoHS compliant, Halogen Free, and are built specifically for the automotive market.

The 5KP54 TVS Diode utilizes a zener diode based on the avalanche breakdown principal. It operates by shunting excess current caused by an over voltage event to the anode or cathode, depending on the polarity of the transient. Excess current is limited since it is regulated down to a voltage or current level that the device can handle. The main purpose of the device is to limit the voltage across the diode and protect the load from a voltage overshoot. It also aids in dissipating the excess current in the system. The working principle is to first rectify the high frequency voltage to direct voltage and then, the diode will threshold the voltage suddenly when the applied voltage exceeds the breakdown voltage. The 5KP54 is designed to provide excellent protection against ESD and transient voltage surges, and is often used in various automotive applications.

Overall, the 5KP54 is an excellent solution for device protection from ESD and transient voltage surges and is often used in automotive applications such as ECU, Body, and controlling systems. From its Functions as an ultra-fast shunt regulator, providing a low clamping voltage, high temperature performance, RoHS compliance, Halogen Free, and 2000hrs of corrosion resistance, the 5KP54 is a great choice over an ordinary diode.

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