NTC negative temperature coefficient thermistor composition.Infrared sensing module wholesale

　　NTC (Negative Temperature Coefficient) refers to the thermistor phenomenon and material with a negative temperature coefficient whose resistance decreases exponentially with increasing temperature. The material is a semiconductor ceramic made of two or more metal oxides, such as manganese, copper, silicon, cobalt, iron, nickel, zinc, etc., which are fully mixed, formed, and sintered. It can be made into a negative temperature coefficient. (NTC) thermistor. The resistivity and material constant vary with the proportion of material composition, sintering atmosphere, sintering temperature and structural state. Now there are also non-oxide NTC thermistor materials represented by silicon carbide, tin selenide, tantalum nitride, etc.

　　Most of NTC thermosensitive semiconducting ceramics are oxide ceramics with spinel structure or other structures, with negative temperature coefficient.

　　History of NTC Negative Temperature Coefficient Thermistor

　　The development of NTC thermistors has gone through a long period of time. In 1834, scientists first discovered that silver sulfide has a negative temperature coefficient. In 1930, scientists found that cuprous oxide-copper oxide also has the performance of negative temperature coefficient, and successfully used it in the temperature compensation circuit of aviation instruments. Subsequently, due to the continuous development of transistor technology, the research on thermistors has made significant progress. In 1960, the NTC thermistor was developed.

　　NTC negative temperature coefficient thermistor temperature range

　　Its measurement range is generally -10 ~ +300 ℃, and it can also be -200 ~ +10 ℃, and it can even be used for temperature measurement in +300 ~ +1200 ℃ environment.

　　The accuracy of the negative temperature coefficient thermistor thermometer can reach 0.1 ℃, and the temperature sensing time can be as short as 10s or less. It is not only suitable for granary thermometers, but also for temperature measurement in food storage, medicine and hygiene, scientific farming, oceans, deep wells, high altitudes, glaciers, etc.

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