According to the data of China Business Intelligence Network: recently, the consumer electronics industry has developed rapidly, and a huge industrial scale has been formed, driven by the latest technologies.
The “2022-2027 China Consumer Electronics Industry Market Prospects Forecast and Future Development Trend Report” released by the China Business Industry Research Institute shows that the scale of China’s consumer electronics market will reach approximately 1,864.9 billion RMB in 2022, with an average annual compound growth rate of 2.97% in the past five years. Analysts at the China Business Industry Research Institute predict that the scale of China’s consumer electronics market will increase to 1,920.1 billion RMB in 2023 and 1,977.2 billion RMB in 2024.
In the field of consumer electronics, temperature is an important parameter that affects the performance and stability of the systems. In order to measure temperature quickly, NTC thermistors are widely used in field including water dispensers, smart toilets, and coffee machines. Let’s discuss the principle, application field, and product structure of fast responded NTC thermistors.
1.The Principle of NTC thermistor
NTC thermistors are nonlinear resistors, which alter their resistance characteristics with temperature. The resistance of NTC will decrease when the temperature increases. This characteristic enables them to respond quickly to temperature changes.
2.How NTC thermistors work in consumer electronics applications
2.1Water dispenser: As a device with high safety performance, water dispensers have high requirements for temperature response time. NTC thermistorsare mainly installed at their inlet and outlet to measure water temperature, prevent water temperature from being too cold or too hot, or potential dangers.
2.2 Smart toilet: NTC thermistors can detect the water temperature, wind temperature, and seat heating on smart toilets. For example, for water temperature, NTC thermistors are usually installed at the water’s inlet and outlet to quickly detect water temperature and prevent risks causing by overheat water.
2.3. Coffee machine: Brewing coffee has specific requirements on water temperature. Overheat water will destroy the taste of coffee. NTC temperature thermistors are mainly used to detect the outlet temperature, improve the brewing of coffee machines, and prevent safety accidents.
3.NTC thermistor’s structure
Fast responded NTC thermistor is a glass bead type potting into a bullet-shaped housing. It is tiny and fast, with high waterproof performance, a best choice to detect water temperature.
4.Product picture:
5.Specifications:
| NO. | Material | Specifications |
| 1 | Thermistor | R25=10kΩ±1%, B(25/50)=3950K±1% |
| 2 | Glass bead | 1.35*1.05*4.0 |
| 3 | Dumet wire | 0.2*76.5mm |
| NO. | Material | Specifications |
| 1 | Thermistor | R25=50kΩ±1%, B(25/50)=3950K±1% |
| 2 | Sleeve | polyimide |
| 3 | Housing | SUS304+brass+flange |
| 4 | Cable | UL2651# 26AWG Black |
| 5 | Connector | XH-2Y white |
6.Electronic characteristics:
1.Thermal time constant: ≤2.5 secondsmax, in oil
2.Dissipation factor: about 0.5W/℃in still air
3. Rated power: 35mWmax
4.Insulation test：10MΩ
5.Operation temperature range: -40℃ ~ 250℃
1.Thermal time constant: ≤3 secondsmax, in water
2.Dissipation factor: about 1.8W/℃in still air
3.Hi-pot test：2mA 1 secondwith no break down
4.Insulation test：≥100MΩ
5. Rated power: 2mWmax
6.Operation temperature range: -30℃ ~ 105℃
7.Contact:
Ms. Tina Tang
Exsense Sensor Technology Co., Ltd
Tel:86-15813344362
email:sak@exsense.net
Web:www.exsense.net;www.exsense.com
Add:Xida Science Park, Duanzhou Dist., Zhaoqing , Guangdong
