Thermistors are a type of metal oxide (semiconductor material) that usually exhibit a high negative temperature coefficient of resistance, but can also have a positive coefficient.
- Sensitivity and Characteristics: These devices are extremely sensitive, capable of up to a 10% change in resistance per degree Celsius. This makes them the most sensitive temperature sensors available, though their characteristics can be highly nonlinear.
- Operating Range: The typical response time for thermistors is between 0.5 to 5 seconds. They usually operate effectively in temperatures ranging from -50°C to +300°C.
- Extended Range: Some thermistors are engineered to function at temperatures as high as 500°C
- Variety and Cost: Thermistors are low-cost and come in a diverse range of shapes, sizes, and resistance values.
- Usage Considerations: When deploying thermistors, it’s crucial to manage the effects of internal heating carefully.
