P4KE400CA-B Circuit Protection

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The P4KE400CA-B TVS diode is mainly applied in the field of signal integrity protection. This type of diode can provide high-capacity protection from electrical overstress transients and associated failures in order to reduce system vulnerability and extend the life of a system.

This diode is designed with a high-speed, low-capacitance, bidirectional Silicon-Avalanche protection circuit that is capable of handling 5KW of average power dissipation at 8/20 microseconds waveforms. Its maximum peak power dissipation of 400W (8/20 microseconds) ensures a low valley breakdown voltage from 5 to 400 volts, with less than 5pF capacitance and 0.5ns of response time. This device is available in various lead configurations such as TO-232, TO-220, and SC70-3 that facilitate mounting in any preferred orientation.

The working principle behind this P4KE400CA-B diode is basically a voltage-clamping system which uses an avalanche effect to clamp down voltages that are higher than the breakdown voltage of the diode. This is done by allowing an avalanche current to flow when excessive voltage is present in the system, thus clamping it to a safe value. This enables the device to absorb fast transients and peaks on both high and low nodes of the line, without letting the voltage rise to the levels that may cause serious damage to the system.

Moreover, this diode has a low capacitance which enables excellent signal quality during high-frequency operations. Additionally, the diode has a high reverse leakage current limit, thus allowing it to provide reliable protection from both electrostatic discharge (ESD) and electrical fast transients (EFT) events.

In conclusion, the P4KE400CA-B TVS diode is designed for signal integrity protection and is a reliable, high-performance solution to protect any system from electric overstress transients and related failures. It is an ideal device for extending the life of a system by protecting it from damaging voltage spikes and providing superior signal quality during high frequency operations.

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