The RT0402BRD0720K5L is a surface-mount (SMD) Thin Film Resistor from Yageo. It has a 1/16W rating (applicable to the power rating), a resistance of 20.5K ohm, a tolerance of 0.1%, and a temperature coefficient of 25 parts per million (ppm). This resistor is used in electronic circuits to control the current flow in a range of voltage input and output operations. It is particularly suitable for precision purposes as it has a low noise level and high stability. The thin film construction and surface mount technology of the resistors provide strong resistance to temperature changes, making them well-suited for applications that require high durability and accuracy.