OxiCap® NOJ Niobium Oxide Capacitors KYOCERA AVX OxiCap® NOJ Capacitors are niobium oxide (NbO) capacitors built with non-burn, non-smoke technology. The capacitors offer a reliability level of 0.5%/1000 hrs, a variety of case sizes, and a CV range of 4.7-1000µF / 1.8-10V. Applications for KYOCERA AVX OxiCap NOJ Capacitors include automotive, avionics, and more.