NTC thermistor models and parameters, how to wire NTC thermistors 2

NTC thermistor model and parameters:

1. Nominal resistance (R25): refers to the resistance value at an ambient temperature of 25 ° C, commonly including 10K Ω, 5K Ω, 1K Ω, etc. diode

2. B value: represents the characteristic of the resistance value change of NTC thermistor at two different temperatures. Common B values include 3435K, 3950K, etc., which are used for temperature and resistance conversion calculations.

3. Temperature resistance range: The temperature range in which NTC thermistors can operate normally, such as -40 ° C to 125 ° C.

4. Size: Depending on installation requirements, NTC thermistors come in different packaging forms and volume sizes, such as small bead shapes with a diameter of 0.5mm or large disc shapes with a diameter of 5mm.

5. Accuracy: The indicator refers to the allowable deviation of the resistance value at temperature, generally ± 1%, ± 2%, ± 3%, etc.

6. Thermal time constant: refers to the speed at which an NTC thermistor responds to temperature changes. The smaller the time constant, the faster the response speed.

7. Dissipation coefficient: The power required for an NTC thermistor to increase by 1 ° C in natural convection, usually expressed in mW/° C.diode

The wiring method of NTC thermistor: