Rod type cermet based NTC themo-resistive sensors

Environment friendly thick film NTC thermistors based on spinel-type Semiconducting electroceramics compositions based on oxides of (Mn, Co, Ni) were fabricated on cyclindrical/rod type alumina substrate. Prepared rod type NTC thermistors were characterized by X-ray diffraction, and Scanning electron microscopy with energy depressive Xray analysis. Rod thermistor samples showed compact and homogeneous microstructure. The electrical parameters such as device resistance, thermistor constant, ageing, thermal cycling, and humidity testing of the thermistors were determined.