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What is NTC thermistor

Number of Views:30082021-07-19 15:34:37

NTC thermistor is a kind of semiconductor ceramic component made of manganese, cobalt and nickel as the main raw materials and sintered at high temperature. NTC thermistor is also called negative temperature coefficient thermistor. Under the measurement power, the resistance value drops rapidly as the temperature rises. Using this principle, the NTC thermistor will determine the corresponding temperature by measuring its resistance value, so as to achieve the purpose of detecting and controlling the temperature of the resistance device.

NTC thermistors include glass-encapsulated NTC thermistors and epoxy-encapsulated NTC thermistors:
What is a glass package NTC thermistor?

The glass package is made by encapsulating the NTC thermal chip glass case, and the lead wire is made of Dumet wire. The NTC thermistor parameters are monitored through high temperature sintering and high temperature oil tank. Due to the use of glass packaging, it can be used in harsh environments such as high temperature and high humidity, and has fast heat induction speed, good stability, high reliability, small size, light weight and strong structure. Operating temperature range: -40°C~250°C, the highest temperature resistance is 420°C if gold electrode glass-sealed resistors are used. The smallest size is 0.8mm single-ended glass-sealed NTC thermistor, which is used in high-temperature products such as heat-not-burn electronic cigarettes, high-temperature ovens, and high-temperature fixing components of copiers and printers.
What is epoxy encapsulated NTC thermistor?

Epoxy-encapsulated NTC thermistor is an epoxy-coated non-insulated lead wire, dominated by CP wire, and the head size range can be controlled within about 2.0-3.5mm. Using epoxy resin encapsulation, stable performance, high reliability and small size, with high sensitivity and good heat cycle and other advantages. Its operating temperature is -40°C~150°C and can be packaged into various types of NTC temperature sensors. It can be applied to temperature detection of home appliances, high-precision temperature sensors, battery packs and various vehicles.

Talking about the difference between NTC thermistor and PTC thermistor