Iduino Analogue Temperature Sensor
The Iduino Analogue Temperature Sensor uses an NTC thermistor (NTC-MF52 3950) to detect temperature with a range of -55 to +125°C. It offers an accuracy of ±0.5°C and includes a 10KΩ pull-up resistor, providing precise temperature measurements.
NTC Type: |
NTC-MF52 3950 |
Temperature Range: |
-55 ∼ +125°C |
Accuracy: |
± 0.5°C |
Pull Up Resistor: |
10KΩ |
Pinout
Pin |
Signal |
‘S’ |
Signal pin |
‘-‘ |
Gnd |
‘+’ |
Vcc (reference voltage: 5VDC) |
The Steinhart–Hart equation is a model of the resistance of a semiconductor at different temperatures.
The equation is

where:
- T is the temperature (in kelvins)
- R is the resistance at T (in ohms)
- A , B and C are the Steinhart–Hart coefficients, which vary depending on the type and model of thermistor and the temperature range of interest. (The most general form of the applied equation contains a (ln R)² term, but this is frequently neglected because it is typically much smaller than the other coefficients, and is therefore not shown above.)
MF352 Data Sheet