P4SMA480A

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Transient Voltage Suppressor (TVS) Diodes are widely used to protect sensitive electronics from high voltage transients such as electrostatic discharge (ESD), electrical overstress (EOS) and lightning strikes. The P4SMA480A is a Silicon Epitaxial Planar Zener diode designed specifically for use in both commercial and automotive electronics. It offers excellent protection characteristics with additional features such as high surge capability and a low peak reverse leakage current.

The P4SMA480A application field primarily covers automotive applications such as ABS, fuel injectors, navigation systems, power steering, instrument clusters, and airbags. This diode is also used in commercial electronics such as cell phones, computers, notebook computers, chargers, printers and power supplies.

When it comes to working principle, this diode uses a reverse biased Zener diode as a bypass device to dissipate the redundant voltage. When an external transient voltage exceeds the diode’s breakdown voltage, the Zener diode breakdown and the voltage is diverted away from the protected circuit. The forward voltage drop of the Zener diode is low enough to protect ICs from overvoltage conditions.

To ensure the optimal performance of the P4SMA480A, three factors have to be taken into consideration. The first factor is its peak current capability. This device offers a peak current capability of 400Amps for 10x1000 us waveforms. The second factor is its peak pulse power rating. The pulse power rating of the P4SMA480A is 5,000W. The third factor is the breakdown voltage, which ranges from 2V to 8V for low energy applications.

In conclusion, the P4SMA480A diode offers excellent protection from high voltage transients and is designed specifically for use in automotive and commercial electronics. It has a peak pulse power rating of 5,000W and a peak current capability of 400 Amps. Furthermore, it offers a breakdown voltage range of 2V to 8V for low energy applications.

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