NTC temperature probe

PTCthermistor

Thermistors are temperature sensors that vary the resistance of the semiconductor element according to the temperature to which they are exposed. There are two types of thermistors: NTC (Negative Temperature Coefficient) - thermistors whose coefficient of resistance variation with temperature is negative: resistance decreased with increasing temperature. PTC (Positive Temperature Coefficient) - thermistors whose coefficient of resistance variation with temperature is positive: resistance increases with increasing temperature. Thermistors have a high thermal coefficient which gives them a high sensitivity, causing great resistance variations for small temperature variations.