800R NPO Ceramic Ultra-Low ESR RF/Microwave MLCs KYOCERA AVX 800R NPO Ceramic Ultra-Low ESR RF/Microwave Multilayer Capacitors offer high performance for demanding high RF power applications that require a consistent and reliable operation. A combination of optimized case geometry, highly conductive electrode formulations, and proprietary dielectrics, yield a low ESR and superior heat transfer. These KYOCERA AVX NPO low-loss rugged dielectric capacitors are ideal for use in UHF through microwave frequency ranges.