NTC thermistor for automobile air conditioner can be installed near the radiator fin of the automobile air conditioner to detect the ambient temperature. When the measured temperature value is lower than a set value (close to 0℃), the relay is disconnected and the compressor stops running; When the measured temperature value is higher than another set value (usually higher than the previous temperature value), the relay is closed and the compressor is restarted, which can prevent the air conditioner duct from freezing.

In order to realize the normal operation of automobile air conditioning, EXSENSE Electronics introduces a kind of NTC thermistor for automobile air conditioner, which consists of NTC thermistor chip, two leads welded on the thermistor chip and epoxy resin coating encapsulated on the outside of NTC thermistor chip. The specific preparation method is as follows:

First, weigh several raw materials (manganese dioxide, cobalt oxide, nickel oxide, iron oxide) in proportion, and add deionized water to ball grinding;

Second, after drying the mixed material at 100℃, place it in muffle furnace for calcination at 950℃;

Third, the ceramic body was formed by isostatic press and then sintered into dense ceramic body in a high temperature furnace at 1200℃.

Fourth, cut into thin slices with high precision slicing machine, and then coated with silver electrode on both sides of the chip, and then cut into chips with high precision dicing machine;

Fifth, NTC thermistor for automobile air conditioner can be obtained by welding leads on both sides of the chip and encapsulating with epoxy resin.

NTC thermistor for automobile air conditioner obtained by this preparation method is high precision, good consistency, great insulation and tightness, mechanical collision resistance and bending resistance. NTC thermistor for automobile air conditioner produced by EXSENSE Electronics Technology Co., Ltd. has the characteristics of good heat resistance cycle, high cost performance, fast response, etc. It is suitable for temperature monitoring and temperature controlling of automobile air conditioning.