The XT9M20ANA8M is a surface-mount chip varistor manufactured by Vishay. This part has a diameter of 9 mm and is made of an SNiP56-1 material. It has an 8mm lead length and a load current of 20A. It has a maximum working voltage of 250V, nominally rated voltage of 140V, and a maximum clamping voltage of 460V. The XT9M20ANA8M is used for surge and overvoltage protection in a variety of electronic applications.