KEMET’s RF capacitor line is called the CBR series. “C” is for Ceramic and “BR” refers to the dielectric material. The Q, or “Quality Factor”, is the inverse of DF, or “Dissipation Factor”, and the CBR product series is considered high Q. In parallel, then, the ESR is very low; even lower than in standard MLCCs. These parts are suitable for use up to 125°C, and are RoHS compliant and 100% Pb-free. Conventional case sizes 0201-0805 and voltages up to 250 V are available. A tolerance option from KEMET was required for this series; that being the “A” tolerance, ±0.05 pF, an important addition for this product series and tuning applications.