Synthesis, Characterization and Fabrication of NTC Thick Film Thermistor Using Lead Free Glass Frit

Abstract

Thermistors are important and attractive in microelectronic and opto-electronic systems due to their unique thermoelectric properties and their applications in air flow sensor, IR detectors, temperature sensors etc. In the present study, mixed transition manganite semiconducting ceramics with spinel structures are used for the preparation of negative temperature co-efficient (NTC) ceramic thermistor. Here, we report the preparation of NTC powders by co-precipitation of chlorides of Mn, Co, Ni and its lead free thick film thermistors. The synthesized NTC powders as well as its thick films were characterized by TGA, XRD, and SEM. The prepared thick film thermistors showed thermistor constant () in the range 3,562-4,334 K over the temperature range of 25-250 ºC.

Use of a Natural Clinoptilolite Monolith as a Negative Temperature Coefficient Thermistor

“…The recent restriction of hazardous substances in the electronic industry have forced production toward 'green' electronic materials, such as conductors and solders, and the use of environmentally friendly manufacturing solutions [1][2][3]. So far, only limited academic research (at the laboratory scale) has been carried out on 'green' resistors and thermistors [4].…”