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TVS - Diodes

A transient voltage suppressor (TVS) diode is a diode that is designed to protect electronic equipment from the damaging effects of electrical transients. It is able to absorb and dissipate large amounts of electrostatic discharge (ESD) energy.

15KPA58A-B application field and working principle

15KPA58A-B Transient Voltage Suppressor Diodes are used for surge protection of high-speed communication lines in computer network applications. The device is composed of two diodes connected back to back, allowing bidirectional protection. When the input voltage exceeds the specified overvoltage protection level, 15KPA58A-B offers a low-capacitance bidirectional solution for high surge energy protection of high-speed cables.

The working principle of 15KPA58A-B TVS Diodes is based on the principle of maintaining a silicon avalanche diode at a reverse-biased condition that exhibits a high breakdown voltage, very low capacitance, and a very fast response time. When an overvoltage occurs, the avalanche diode is triggered by the excess charge and offers a low-resistive path for the current to flow to ground. This effectively \'clamps\' the voltage level and prevents it from exceeding the breakdown voltage of the diode.

The 15KPA58A-B device features a very fast response time and is designed for use in high-speed cellular radio and wireless data communication systems, as well as automobile and industrial applications. The device has a maximum surge current rating of 500mA for any single line, and a reverse breakdown voltage rating of 21V. The device is RoHS compliant and features a low reverse leakage current of 1uA at 25°C.

In addition, 15KPA58A-B has a maximum capacitance of 0.3pF, which is a key factor in high-speed applications, as it helps to reduce signal noise. The maximum reverse leakage current of the device is 1uA, which minimizes power loss and allows the device to operate in a variety of conditions without requiring additional active components.

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