The structure of NTC chip thermistor that engineers should know.Ultrasonic module Vendor

　　NTC is the abbreviation of Negative Temperature Coefficient in electronics, which means negative temperature coefficient. It is a thermistor element with negative temperature characteristics. Common uses of this component are in circuits for suppressing inrush currents, measuring temperature, temperature compensation, etc. The resistance value of NTC thermistor decreases with the increase of temperature, and the temperature coefficient of resistance is in the range of -2%/k~-6%/k, which is about 10 times of the temperature coefficient of metal resistance. The change of the resistance value of the NTC thermistor can be caused by the change of the external ambient temperature, or it can be caused by the current flowing and self-heating. His various uses are based on this property. NTC thermistors are constructed of mixed oxide polycrystalline ceramics. The conduction mechanism of this material is quite complex. Its resistance decreases with increasing temperature

　　NTC thermistors are mainly made of metal oxides such as manganese, cobalt, nickel and copper, and are manufactured by ceramic technology. They are widely used in temperature detection, temperature compensation and other circuits. In order to realize the temperature detection and monitoring of a specific target, NTC thermistor has a very rich package structure. Among them, the chip type NTC thermistor has its small size, no pins, fast response speed, and meets the SMT production process. It is often used by engineers in electronic circuit design.

　　With the continuous development of transistor technology, since the invention of the NTC thermistor in 1960, the chip NTC thermistor products have also experienced continuous development and improvement in structure, performance and cost. This article mainly introduces the chip NTC thermistor. Several different structures of thermistors and their performance comparisons improve your understanding of thermistor selection. At present, there are three mainstream structures of SMD NTC thermistors on the market. If they are arranged according to the time of appearance, they can also be expressed as three generations of products.

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