3KP26C-B

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Introduction

Transient voltage suppressors (TVS) are widely used in applications for protection against overvoltage transients in circuits from damage. They are the most commonly used protective devices, used to protect integrated circuits, components and devices such as diodes, resistors, transistors and semiconductors. The 3KP26C-B is a three-terminal, transient voltage suppressor designed for protection from overvoltage transients in automotive applications.

TVS - Diodes

TVS diodes are bi-directional, voltage clamping devices used to protect against surge, over-voltage and electrostatic discharge (ESD) caused by transients, whether due to load disturbances, lightning, inductive switching or motor start-up. They offer a maximum protection voltage of either 24V or 32V, depending on the device. They are also capable of handling high inrush currents for up to 100µs, ensuring high inrush current protection. With the ability to shunt and limit power excessive voltages, they are the ideal choice to provide protection from transient voltage surges.

3KP26C-B Application Field and Working Principle

The 3KP series of TVS diodes are specifically designed for automotive applications and are rated for a maximum surge power of up to 3000W. As a result, they are ideal for protecting automotive electronics from overvoltage transients generated by lightning strikes, increases in power supply voltage, and from accidental electrical shorts due to load dumping. This makes them suitable for the protection of connection housings, harnesses and central power supply lines.

The 3KP26C-B diode works on the principle of zener breakdown. Specifically, when the voltage transient occurs, electrons travelling in the junction region, between the doped semiconductor and the depletion region, gain sufficient energy to cross the potential barrier between the two regions. This causes the device to conduct electricity and clamps the voltage at its breakdown voltage level. Thus, the device dissipates the energy of the transient voltage surge and prevents it from propagating into the circuit.

In addition, the 3KP26C-B also includes additional protection features such as over-temperature protection to protect against thermal runaway, and ESD protection to protect against electrical transients from ESD events. This makes it an ideal choice for protecting automotive electronics from transient voltage surges.

Conclusion

Overall, the 3KP26C-B transient voltage suppressor is an ideal choice for protection from transient voltage surges in automotive applications. It offers a reliable solutionfor protecting automotive electronics from lightning strikes, power supply voltage increases, and accidental electrical shorts due to load dumping. Additionally, additional protection features such as thermal runaway protection and ESD protection ensures that automotive electronics are protected from potentially damaging events.

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