A Study of Factors Affecting Characteristics of Thick Film NTC Thermistors

摘要

Monolithic chip thermistors are widely used for temperature sensing and compensation in electronic industry. Over the last two decades thick film thermistors have also been utilized in a variety of applications, from automotive sensors to microwave attenuators. Rapid growth of these market segments has increased the need for better performance and more reliability from such materials. In particular, a wider resistivity range, more sensitivity to temperature change, a more predictable response, and better stability are desired. This paper examines the characteristics of a newly developed ruthenium based NTC thermistor series. The series consists of blendable members from 250 U/to 100 KU/. The effect of such factors as thermistor geometry and processing conditions on the above performance characteristics are presented.