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    The automotive air conditioning control module (ACM) is one of the essential components in modern cars. It is responsible for regulating the temperature, humidity and circulation of the air inside the car, as well as controlling the operation of components such as the compressor and fan. Since the automobile air conditioning control module involves many electronic components and is affected by various factors such as vehicle starting and charging, the use of power NTC thermistors to protect the circuit board can ensure the stability of the automobile air conditioning control module.

    The resistance value of the power NTC thermistor body at normal temperature and the thermal delay effect caused by thermal inertia can effectively suppress the peak surge current (up to Dozens of times or even hundreds of times the normal operating current). And after completing the function of suppressing the surge current, due to the self-heating effect under the continuous action of the current passing through it (including surge current and normal operating current of the circuit), the temperature of the resistor will rise, and the resistance value of the power NTC thermistor will decrease. To a very small extent, the voltage drop generated consumes very little power and will not affect the normal operating current.

    There are electronic components such as operational amplifiers, capacitors, and relays in the circuit board in the automotive air conditioning control module. These components are very susceptible to surge current. Therefore, adding a power NTC thermistor to the circuit board can effectively suppress the impact of surge current and protect the service life of other components in the circuit. When a surge current occurs in the circuit, the power NTC thermistor It can switch to a low-resistance state instantly to limit the flow of current, thus protecting other components in the circuit.

    Nanjing Shiheng Electronics' power series products are divided into five sub-series products: MF72, MF73T, MF73, MF74, and MF75. They have multiple specifications and models. The chip diameters of the products range from 3mm to 80mm, and the zero-power resistors range from 0.2Ω to 400Ω. The steady-state current ranges from 0.1A to 120A, and the impulse capacitance is up to 15000μF. The power NTC thermistor used in automotive modules is well received by users!

    Nanjing Shiheng Electronic Technology Co., Ltd. has independent intellectual property core technologies, 62 authorized patents (including 13 invention patents), 3 software copyrights, and 14 registered trademarks. Among them, the NTC thermistor series products cover surge suppression, temperature compensation, precision temperature measurement, temperature control and other applications. It is a backbone enterprise specializing in the production of NTC thermistors and temperature sensors in China. The company specializes in NTC temperature sensors and NTC thermal sensors. Sensitive resistor for 22 years, it has become a national-level "specialized, special and innovative" small giant enterprise.