The ntc temperature sensor is usually composed of 2 or 3 metal oxides, mixed in fluid-like clay, and calcined in a high-temperature furnace to form dense sintered ceramics. Oxygen-linked metals tend to provide free electrons. Ceramics are generally excellent insulators. But only in theory, when the temperature is close to absolute zero, this is the case with thermistor type ceramics. However, when the temperature increases to a more common range, thermal excitation will eject more and more free electrons. As many electrons carry current through the ceramic, the effective resistance decreases. The resistance changes with temperature extremely sensitive. The typical change is a decrease of -7% to 3% per degree Celsius. At this time, any sensor suitable for use in a wide temperature range is the most sensitive.

The rated room temperature resistance depends on the resistivity, size and geometry of the basic material, and the contact area of the electrode. A thick and narrow thermistor has a relatively high resistance, while a thin and wide shape has a lower resistance. The actual size is also very flexible, they can be as small as .010 inches or very small diameters. There is almost no limit to the maximum size, but it is usually suitable for less than half an inch.

Definition of NTC temperature sensor:
NTC thermistor and probe assembly (combined) pieces. A finished thermistor assembly (combination) made up of a thermistor shell, extension leads, and sometimes a joint.

Structure of NTC temperature sensor
Generally composed of NTC thermistor, probe (metal shell or plastic shell, etc., extension lead, and metal terminal or connector)

Principle of NTC temperature sensor
Using NTC thermistor under a certain measuring power, the resistance value drops rapidly as the temperature rises. Using this feature, the NTC thermistor can determine the corresponding temperature by measuring its resistance, so as to achieve the purpose of detecting and controlling the temperature.

Application of NTC temperature sensor
● Air conditioners, refrigerators, freezers, water heaters, water dispensers, heaters, dishwashers, disinfection cabinets, washing machines, dryers and other household appliances.
● Automobile air conditioner, water temperature sensor, intake air temperature sensor, engine
● Switching power supply, UPS uninterruptible power supply, frequency converter, electric boiler, etc.
● Smart toilet, electric blanket, etc.

Features of NTC temperature sensor:
● High sensitivity and fast response
● High resistance and B value accuracy, good consistency and interchangeability
● Adopting double-layer encapsulation process, with good insulation and sealing performance and resistance to mechanical impact and bending
● The structure is simple and flexible, and can be customized according to different customer requirements.

Representation of product specifications and models

Part No.	R25℃ (KΩ)	B(K) 25/50℃	Rated Power @25℃(mW）	Dissipation Factor(δ) (mW/℃)	Thermal time Constant (S)
TS502 - 3274A	5.0	3274	10-20	2-4	5-20
TS502-3435B	5.0	3435	10-20	2-4	5-20
TS502-3470A	5.0	3470	10-20	2-4	5-20
TS502-3950A	5.0	3950	10-20	2-4	5-20
TS103-3274A	10.0	3274	10-20	2-4	5-20
TS103 - 3435B	10.0	3435	10-20	2-4	5-20
TS103-3470A	10.0	3470	10-20	2-4	5-20
TS103-3950A	10.0	3950	10-20	2-4	5-20
TS103-4100A	10.0	4100	10-20	2-4	5-20
TS153-3950A	15.0	3950	10-20	2-4	5-20
TS153-4100A	15.0	4100	10-20	2-4	5-20
TS203-3950A	20.0	3950	10-20	2-4	5-20
TS203-4100A	20.0	4100	10-20	2-4	5-20
TS223-4200A	22.0	4200	10-20	2-4	5-20
TS403-3928A	40.0	3928	10-20	2-4	5-20
TS503-3950A	50.0	3950	10-20	2-4	5-20
TS503-4100A	50.0	4100	10-20	2-4	5-20
TS104-3950A	100.0	3950	10-20	2-4	5-20
TS104-4100A	100.0	4100	10-20	2-4	5-20
TS104-4400A	100.0	4400	10-20	2-4	5-20