
Precision NTC 
NTC thermistor is composed of the oxide of Co, Mn, Ni, Fe, and other transition metals, made by highsintering, semiconductor processing technology, and with various encapsulation types. Thermistor products manufactured by our company are featured by complete varieties, adjustable and designable parameters, good performance, high precision and good exchangeability. Characteristic parameters of thermistor: resistance, B value, dissipation coefficient, time constant.
● Rated zeropower resistance: R 25℃ ● B value: indicates the resistancetemperature change regularity of thermistor, and the calculation formula is as follows:
Where, R_{1} & R_{2} is the resistance at T_{1}&T_{2}, and B corresponds to the material coefficient at T_{1}&T_{2}. ● Dissipation coefficient: ratio of thermistor consumption power to temperature change, and the calculation formula is as follows:
● Time constant T: Under zeropower, and when the temperature changes abruptly, the time that thermistor takes to change 63.2% of temperature difference of the beginning and the end temperature. T is in direct proportion to thermal capacitance C of resistor, and in inverse proportion to dissipation coefficient δ。
● Temperature resistance characteristics: the temperatureresistance characteristic curve is as follows:
R – zeropower resistance T – absolute temperature K°



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