Automotive Solid Electrolytic Capacitors KYOCERA AVX Automotive Solid Electrolytic Capacitors feature a range of tantalum, polymer, and niobium oxide capacitors that bring specific and unique features to suit specific application requirements. TKYOCERA AVX conventional tantalum / MnO2 capacitors offer a long lifetime and no wear-out mechanism. Niobium Oxide (OxiCap®) offers extreme stability for low voltage automotive applications, while conductive polymer offers low ESR, benign failure mode, and high voltage ratings.