1004,West-CBD,No.139 Binhe Rd,Futian District,Shenzhen, China Post Code:518048
+86-18682200597
sales@szhaiwang.com
source:Industry News release time:2022-06-25 Hits: Popular:Infrared sensing module
NTC is called a negative temperature coefficient thermistor. It is prepared from a ceramic material that is fully mixed with Mn-Co-Ni oxides and then sintered. While achieving miniaturization, it also has resistance value-temperature characteristic fluctuations. The characteristics of small size and fast response to various temperature changes can be used as high-sensitivity and high-precision temperature sensors, and are often used in electronic circuits for real-time temperature monitoring and temperature compensation. As the temperature of the body increases, the resistance value of NTC will decrease nonlinearly, which is the characteristic of NTC. In order to make better use of this feature, we need to clearly understand the basic parameters of NTC before application, which will be discussed in this article, hoping to help electronic R&D engineers in actual circuit design.
R25: Resistance value of NTC body at 25℃
B value: material constant, which is a parameter used to express the range of resistance of NTC with temperature in the working temperature range, which is related to the composition of the material and the sintering process. In addition, the B value of NTC will be affected by temperature changes, so we usually select two temperature points on the curve to calculate. When expressing the B value, the selected temperature point should be marked, such as B25/85. The larger the B value, the faster the resistance decreases with the increase of temperature, and the opposite is the case when the B value is smaller.
ɑ value: The so-called temperature coefficient of resistance (α) refers to the zero-load resistance change rate when the temperature changes by 1°C at any temperature. The relationship between the temperature coefficient of resistance (α) and the B value can be expressed by the following formula:
The minus sign (-) before α here means that the zero-load resistance decreases as the temperature rises.
Read recommendations:
What is an NTC thermistor used for?
There are two main methods for calculating the temperature of NTC temperature sensors in practical a
Popular Recommended Products
HW-F1000-5
2021-11-27PIR Lens 7704-2
2021-12-09PIR Lens 8308-8
2021-12-09PIR Lens 7704-3
2021-12-09PND103F3950FTU102
2021-11-27Φ25mm size
2021-11-27round lens
2021-11-27Diameter 3mm size
2021-11-27Z007
2021-11-27PIR Lens 8120-10
2021-12-09PIR Lens 8003-1
2021-12-09NTC thermistor model for temperature detection on DJI batteries.Infrared IC Factory
2022-06-14The Application of NTC Thermistors in Far Infrared Heaters.Motion sensing module
2023-08-23Progress of Thermal Sensing Technology for Measuring NTC Ceramics
2022-11-22What does the main parameter of the NTC temperature sensor mean?Automatic machine mirror company
2023-04-21Infrared sensor detection device.Human Body Sensor Vendor
2022-10-15NTC glass sealed thermistor suitable for use in narrow spaces
2023-09-11NTC application.Pyroelectric infrared sensor module Processing
2023-05-12Discussion on the Seat Heating Function of Intelligent Toilet.Light-dependent resistor
2023-08-12The main features of thermistors
2022-05-11Symptoms of coolant temperature switch (temperature sensor) failure or failure
2022-11-23szhaiwang4@hotmail.com
+86-18682200597
sales@szhaiwang.com