Selection of PTC, NTC Thermistor
(PTC, NTC) There are many types and specifications of thermistors. Which thermistor to choose depends on the actual requirements of the circuit.
Generally used in refrigerator compressor starting circuit, Color picture tube degaussing circuit, Motor over-current and over-temperature maintenance circuit, Current suppression circuit and temperature control electric heating circuit.
Common thermistors in the starting circuit of refrigeration compressors include MZ-01~MZ-04 series, MZ81 series, MZ91 series, MZ92 series and MZ93 series products. The thermistor suitable for starting can be selected according to different types of refrigeration compressors to achieve the best starting effect.
The degaussing thermistors used on color TVs and computer displays include MZ71~MZ75 series products. It can be based on the working frequency (220V or 110V) of the TV and the display, the amount of current in work and the specifications and models of the degaussing coil. Select the degaussing thermistor whose tolerance resistance value, starting and stopping current, working frequency and other parameters all meet the requirements.
Low-power PTC thermistors for current suppression include MZ2A~MZ2D series products and MZ21 series products. There are MZ61 series of PTC thermistors for motor over-temperature maintenance. The main parameters such as tolerance resistance value, power switch temperature, working current and mismatched output power should be selected to meet the model specifications specified by the operating circuit.
Generally used for temperature detection, temperature compensation, temperature control and voltage stabilization in various electronic equipment. When selecting, the appropriate model should be selected according to the needs of the application circuit.
Common NTC thermistors for temperature compensation and temperature control are MF11 series products.
Common NTC thermistors for temperature measurement and temperature control include MF51 series, MF52 series, MF54 series, MF55 series, MF57 series, MF58 series, MF59 series, and so on.
The NTC thermistor of the MF52 series is suitable for temperature measurement and temperature control circuits in the temperature range of -40°C to 125°C. NTC thermistors of MF51 series, MF58 series and MF59 series are suitable for temperature measurement and temperature control circuits below 250°C. NTC thermistors of MF54 series and MF55 series are suitable for temperature measurement and temperature control circuits below 125°C. When choosing a temperature control thermistor, you should pay attention to whether the temperature control range of the NTC thermistor meets the requirements of the operating circuit.
The power NTC thermistor models used to suppress surge current include MF72, MF73, MF73T, ME74 and other products, among which the maximum steady-state current of MF73 series products can reach 80A.
1. Selection of positive temperature index thermistor (PTC)
Common thermistors in the starting circuit of refrigeration compressors include MZ-01~MZ-04 series, MZ81 series, MZ91 series, MZ92 series and MZ93 series products. The thermistor suitable for starting can be selected according to different types of refrigeration compressors to achieve the best starting effect.
The degaussing thermistors used on color TVs and computer displays include MZ71~MZ75 series products. It can be based on the working frequency (220V or 110V) of the TV and the display, the amount of current in work and the specifications and models of the degaussing coil. Select the degaussing thermistor whose tolerance resistance value, starting and stopping current, working frequency and other parameters all meet the requirements.
Low-power PTC thermistors for current suppression include MZ2A~MZ2D series products and MZ21 series products. There are MZ61 series of PTC thermistors for motor over-temperature maintenance. The main parameters such as tolerance resistance value, power switch temperature, working current and mismatched output power should be selected to meet the model specifications specified by the operating circuit.
2. Selection of Negative Temperature Index Thermistor (NTC)
Common NTC thermistors for temperature compensation and temperature control are MF11 series products.
Common NTC thermistors for temperature measurement and temperature control include MF51 series, MF52 series, MF54 series, MF55 series, MF57 series, MF58 series, MF59 series, and so on.
The NTC thermistor of the MF52 series is suitable for temperature measurement and temperature control circuits in the temperature range of -40°C to 125°C. NTC thermistors of MF51 series, MF58 series and MF59 series are suitable for temperature measurement and temperature control circuits below 250°C. NTC thermistors of MF54 series and MF55 series are suitable for temperature measurement and temperature control circuits below 125°C. When choosing a temperature control thermistor, you should pay attention to whether the temperature control range of the NTC thermistor meets the requirements of the operating circuit.
The power NTC thermistor models used to suppress surge current include MF72, MF73, MF73T, ME74 and other products, among which the maximum steady-state current of MF73 series products can reach 80A.
