U Series RF Multilayer Ceramic Capacitors KYOCERA AVX U Series RF Multilayer Ceramic Capacitors provide ultra-low equivalent series resistance (ESR) at VHF, UHF, and microwave frequencies. These MLCCs provide tight tolerances as well as C0G (NP0) characteristics and voltage variation. KYOCERA AVX U Series capacitors are available in 0402, 0603, 0805, and 1210 EIA chip sizes with a 0.2pF to 10µF capacitance range.