HiQ-CBR (RF & Microwave) Capacitors KEMET HiQ-CBR (RF & Microwave) Capacitors feature a copper base metal electrode (BME) system that offers ultra-low ESR and high Q in the VHF, UHF, and microwave frequency bands. Low ESR allows for higher RF currents, which are ideal for applications such as cellular base stations and telecommunication networks as well as V2X, safety systems, powertrains, and automotive communication systems. These surface-mount multilayer ceramic capacitors (SMD MLCCs) include an automotive type that is AEC-Q200 qualified. KEMET HiQ-CBR (RF & Microwave) Capacitors exhibit no change in capacitance with respect to time/voltage and boast a negligible change in capacitance regarding ambient temperature.