The 0402X104K6R3 is a 100nF 6.3V 0402 RoHS-compliant multilayer ceramic capacitor (MLCC) with surface mount technology (SMT) manufactured by Walsin. It is a small passive component that functions as a type of energy storage device that holds an electrical charge, allowing it to moderate current flow in circuits. It is typically used to reduce high electronic noise, filter signals between stages of amplifiers, protect circuits from reverse voltage, and allow the design of more compact, high-precision circuitry. It is designed to operate at a temperature range of -55°C to 125°C. Its dimensions are 0.04x0.02 inches, and it has an X7R dielectric material.