NTC thermistor models and parameters, how to connect NTC thermistors 1

The NTC thermistor is a temperature-sensitive ATMEGA48PA-PU resistor whose resistance changes with temperature. NTC stands for Negative Temperature Coefficient, indicating that the resistance decreases as the temperature rises. NTC thermistors are widely used in temperature detection, temperature compensation, overcurrent protection, and self-resetting fuses. Different application environments and requirements dictate varying needs for NTC thermistor models and parameters.diode

NTC thermistors are made from semiconductor materials (typically manganese dioxide, copper oxide, iron oxide, silicon, etc.), whose resistivity decreases with rising temperature. At the microscopic level, increased temperature leads to a rise in the number of charge carriers (free electrons and holes) within the semiconductor, enhancing current mobility and resulting in a reduction of overall resistance. This property makes NTC thermistors highly sensitive indicators of temperature.

NTC Thermistor Models and Parameters:

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

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

3. Temperature Range: The operating temperature range for NTC thermistors, such as -40°C to 125°C.diode

4. Dimensions: Depending on installation requirements, NTC thermistors come in various packaging forms and physical sizes, such as small bead types with a diameter of 0.5mm or large disc types with a diameter of 5mm.