Effects of High Temperature Treatment on Noise Properties of Thick Resistive Films

High temperature treatment is the key process in formation of thick resistive films. When these complex structures are in question, materials selection, screen-printing process and high temperature treatment are directly responsible for resistor performances. High temperature treatment regulates the space distribution of conducting and glass phase in the resistor. Strict control of conveyor furnace operation, optimum firing profile, adequate peak temperature and dwelling time spent at the peak temperature determine microstructure of the film. Conduction mechanisms present in the film are directly related to resistor performances. In this paper standard resources for tracking micro and macrostructural changes, resistance and noise index measurements, are used in investigation of effects of thermal processing on properties of thick resistive films.