Use the Steinhart-Hart equation or the Beta-parameter equation to convert the measured resistance into a temperature value based on the manufacturer's R-T curve.
Temperature Sensors - NTC Thermistors Component Intelligence
Precision thermal sensing for compensation and control loops.
What are Temperature Sensors - NTC Thermistors components?
NTC (Negative Temperature Coefficient) thermistors are resistive sensors where resistance decreases as temperature rises. They are the industry standard for cost-effective, high-sensitivity thermal monitoring, compensation, and safety shut-off circuits in power electronics.
How to Choose Temperature Sensors - NTC Thermistors Components
Selecting an NTC thermistor requires balancing sensitivity, response time, and environmental robustness.
Resistance at 25°C
The baseline resistance (R25) defines the circuit scaling; ensure it matches your ADC input range and bias current.
Beta Value (B-Constant)
The B-value determines the sensitivity curve; ensure the B-value matches your lookup table or Steinhart-Hart equation.
Tolerance and Accuracy
Tight tolerance (e.g., 1%) is critical for precision control, while 5-10% is sufficient for basic thermal protection.
Package and Mounting
Choose between SMD for PCB integration or leaded/probe styles for chassis or fluid immersion.
Thermal Time Constant
Evaluate the time constant if your application requires rapid response to sudden temperature transients.
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