The 821KD14J varistor with 1.355kV rating, 0.6W power dissipation, 235J energy rating, 240pF capacitance @ 1KHz, 670V breakdown voltage, 510V operating voltage, and 820V peak voltage is a radial leaded overvoltage protection device designed and certified to ROHS standards by Liown. It has a clamping voltage of 6kA. This part is designed to be used in overvoltage protection circuits as a surge arrester, voltage regulator, or transient voltage suppressor.