The RF03N9R1C500CT is a Multilayer Ceramic Capacitor (MLCC) from Walsin, an electronic components manufacturer. It provides 9.1 picofarads (pF) of capacitance at a rated voltage of 50 volts. The component has an 0201 form factor, which is the smallest size in surface mount technology (SMT). It is also certified RoHS compliant, meaning it meets all EU restrictions on hazardous materials. The RF03N9R1C500CT can be used in a variety of electronic applications, such as RF (Radio Frequency) circuits, low-voltage power supplies, and small signal coupling and decoupling.