The 0603N4R3B500 is a 4.3pF, 50V, SMD or SMT type, RoHS compliant, multilayer ceramic capacitor manufactured by Walsin. It has a 0603 package size and is built with multiple insulated layers of ceramic that act as the dielectric between two metal plates. The capacitor is designed for surface mounting, which makes it ideal for applications where space is limited or a very low profile design is needed. It is often used for RF/ High Frequency, Automotive and General Industrial applications as well as in Communications, Consumer Electronics, Computers & Peripherals and many other applications that require a small profile but high performance.