Characteristics of CTR thermistor
Crit1Cal Temperature Resistor CTR (Crit1Cal Temperature Resistor) has a negative resistance mutation characteristic. At a certain temperature, the resistance value decreases drastically with the increase of temperature, and has a large negative temperature coefficient. The constituent material is a mixed sintered body of elemental oxides such as vanadium, barium, strontium, and phosphorus. It is a semi-glass semiconductor, also called CTR as a glassy thermistor. The sudden change temperature changes with the addition of germanium, tungsten, molybdenum and other oxides. This is due to the incorporation of different impurities, so that the lattice spacing of vanadium oxide is different. If the vanadium pentoxide becomes vanadium dioxide in a suitable reducing atmosphere, the resistance temperature will increase; if it is further reduced to vanadium trioxide, the sudden change will disappear. The temperature that produces the sudden change in resistance corresponds to the location of the sudden change in the properties of the semi-glass semiconductor, so a semiconductor-metal phase shift occurs. CTR can be used as temperature control alarm and other applications.
Theoretical research and application development of thermistors have achieved remarkable results. With the application of high, precise and cutting-edge technology, a deeper exploration of the thermistor’s conductive mechanism and application, as well as in-depth research on new materials with excellent performance, will achieve rapid development.
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