TVS diodes are used to limit or block surges at specific voltage levels. These devices are designed primarily by relying on the unidirectional conducting properties of diodes. The abbreviation "TVS" stands for Transient Voltage Suppression/Suppressor. There are various types of this product, including polarity and Zener types, with features such as unidirectional and bidirectional channels, voltage-reverse breakdown, voltage-clamping, current-peak pulse, power-peak pulse, and power line protection.