5KP45CA-G Circuit Protection

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Transient Voltage Suppressor (TVS), also known as Transient Voltage Suppressor Diodes, are designed to protect devices from high-level, yet short duration electrical transients such as those caused by lightning, inductive switching, automotive load dumps, or short-circuits. The 5KP45CA-G, a Uni-directional TVS Diode, is used to protect circuits and components from overvoltage transients caused by electrostatic discharge, inductive load switching, and lightning.

The key feature of this TVS diode is the ability to absorb the high-energy transients without causing any damage to the device. It is constructed with a Zener breakdown structure integrated with a silicon Avalanche diode, which allows it to provide a higher clamping voltage and a higher maximum peak surge current than traditional Zener Diodes. This makes it ideal for applications such as automotive, medical, industrial, and consumer electronics.

The 5KP45CA-G is designed to absorb transients within the 5V to 400V range, with a peak wait current of 45A and a clamping voltage of about 700V. It features an ultra-low capacitance of 0.2pF, a low maximum leakage current of 1µA, and a maximum thermal resistance of 54°C/W.

The working principle of the 5KP45CA-G is based on the Zener breakdown mechanism. When a high voltage transient is applied, the voltage across the diode increases quickly and the Zener breakdown effect causes the current to be diverted through the diode. This prevents the damage to the protected device due to the voltage spike. The Avalanche diode mechanism then kicks in and helps to limit the current flow.

Overall, 5KP45CA-G is an ideal option for Transient Voltage Suppressor applications due to its robust circuitry and capabilities. It has a wide operating voltage range, fast response time, low capacitance, and low maximum leakage current. It is also very reliable and offers a high level of protection against extreme overvoltage transients.

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