The 0402B181K500 is a multilayer ceramic capacitor (MLCC) with a surface-mount/surface-mount technology (SMD/SMT). It has a capacitance of 180pF, a rated voltage of 50V, and a size of 0402 (also written as 1005). The 0402B181K500 is manufactured by Walsin, a Taiwanese manufacturer of various products including semiconductors, passive components, and magnetic components. The capacitor is RoHS compliant and is suitable for a variety of applications including power supplies, DC-DC converters, memory boards, and consumer electronics.