NTC Thermistors: A Key Component in Temperature Sensing

TIME: 2025.03.26 AUTHOR: Coco Li NUMBER OF VIEWS 1427

An NTC thermistor (Negative Temperature Coefficient thermistor) is a type of temperature-sensitive resistor whose resistance decreases as its temperature increases. It is made from semiconductor materials, typically metal oxides like manganese, nickel, or cobalt, sintered into a ceramic form.




Key Characteristics of NTC Thermistors:


  1. Negative Temperature Coefficient (NTC):

    -Resistance drops as temperature rises (unlike PTC thermistors, which have a positive coefficient).
    -Highly nonlinear response but very sensitive to small temperature changes.

   2. High Sensitivity:

    -More responsive than RTDs (Resistance Temperature Detectors) or thermocouples in certain ranges.
    -Best suited for narrow to moderate temperature ranges (typically -50°C to 150°C, though some go higher).

   3. Nonlinear Resistance-Temperature Curve


Applications of NTC Thermistors:


  1. Temperature Sensing & Control:

    -Used in thermostats, battery packs, automotive cooling systems, and medical devices.

   2. Inrush Current Limiting:

    -Acts as a self-regulating surge suppressor in power supplies (high resistance at startup, then drops as it heats up).

   3. Consumer Electronics:

    -Smartphones, laptops (battery temperature monitoring), and HVAC systems.


Advantages VS Disadvantages:


    -Small size, fast response, and low cost.
    -High sensitivity in its operating range.
    -Nonlinearity requires calibration or lookup tables.
    -Limited temperature range compared to RTDs/thermocouples.
    -Self-heating can affect accuracy if not properly designed.


Contact us and learn more about our temperarture measurement.



HOT keyword: Temperature sensor
Recommend View More
TIME 2025.09.26

Learn More About Ultrasonic Flow Meter

Ultrasonic flowmeters have the advantages of non-contact measurement, high measurement accuracy, strong adaptability to pipe diameters, and easy digital management. They are widely used in industrial production, commercial measurement, and water conservancy testing.

TIME 2025.09.26

GAIMC-Temperature Sensor Type Selection

GAIMC temperature sensor mainly involves ntc temperature sensor, ds18b20 temperature sensor, pt100/pt1000 temperature sensor, and temperature humidity sensor.

TIME 2025.09.25

GAIMC-Flow Meter Types

GAIMC flow measurement mainly involves ultrasonic flow meter, electromagnetic flow meter, turbine flow meter, and vortex flow meter.

029-81292510

info@gaimc.com

Rm. 1208, Building B, Huixin IBC, No. 1 Zhang Bayi Road, High-tech Zone, Xi'an, Shaanxi, China

Copyright © Xi'an Gavin Electronic Technology Co., Ltd Site Map

Message Form