This part is made by Yageo, which is a leading supplier of passive components such as resistors, capacitors, inductors, and more. It is an SMD Current Sense Resistor that has a resistance of 0.5 Ohms, a tolerance of 1%, a wattage rating of 3/4W, and a temperature coefficient of 300ppm. It is part number RL2010FK-070R5L. It is designed to detect current flow through circuit boards, which is helpful in diagnosing and controlling electrical circuits.