NTC Thermistors KYOCERA AVX NTC Thermistors are thermally sensitive resistors made from a mixture of Mn, Ni, Co, Cu, and Fe oxides. Sintered ceramic bodies of various sizes can be obtained. The thermistors offer excellent batch-to-batch product characteristics due to strict conditions of mixing, pressing, sintering, and metallization. High sensitivity and low cost make KYOCERA AVX NTC thermistors the most common device used for temperature measurement.