P4KE120A Circuit Protection

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TVS (Transient Voltage Suppressor) diodes are solid state spiking/clamping devices designed to protect against electrical transients, over-voltage, and other voltage events that may threaten the long-term performance of a system and/or components. The P4KE120A is a popular choice in this regard for applications among many industrial, consumer, and commercial applications.

The P4KE120A offers a wide range operating voltages, ranging from 5.0 to 220 volts. It features an ultra low 5pF capacitance, fast response time of 10/1000microsecond, and low reverse leakage current. The device can also handle up to 40 Amps of peak pulse charge, making it suitable for protecting against high-power spikes such as motor voltage, lightning/surge, electrostatic discharge (ESD), inductive load switching, and other transient events.

The P4KE120A is designed to clamp voltage by shunting the excessive current created by transients to ground. When a voltage surge above or below the operating voltage of the device is detected, the P4KE120A begins to conduct, diverting extra current to ground and blocking it from continuing to flow. This shunt action helps protect the components downstream from the P4KE120A, such as the processor, memory, or controller, while absorbing the surge or spiking current itself.

The P4KE120A is a popular choice for many automotive, industrial, and commercial applications thanks to its fast response time, wide operating voltage range, and low capacitance. It is also widely used in communications systems, consumer electronics, instrumentation, and power regulation. Its fast response time and high peak current handling make it an ideal choice for protecting against electrostatic discharge, transients, lightning/surges, and other voltage events that may damage electronic systems.

The P4KE120A can be placed in series with the device or component it is protecting, or alternatively in parallel. When in series with the protected device, the P4KE120A operates by diverting excessive current flow due to an event to ground. When in parallel, it acts as a voltage regulator, clocking and block voltages above or below the device\'s operating range.

The P4KE120A is a dependable choice for protecting an electronic device or system from electrical transients and over-voltages. It offers fast response times, low capacitance, wide operating voltage ranges, and high peak current handling capacity, which make it suitable for a variety of applications. Furthermore, its ability to be placed in both series and parallel configurations make it an ideal choice for custom applications.

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