PTC thermistors are heat-sensitive, non-linear resistors with a positive temperature coefficient. Unlike thermistors
, the resistance of PTC thermistors increases with increasing temperature. PTC thermistors, Positive Temperature Coefficient (PTC), conduct current better at low temperatures. PTC thermistors are available in resistance values from 1 ohm
to 100 kilo-ohms. Temperature ranges are from -65 °C to +200 °C and the temperature coefficient is as low as 1%/°C.barium titanate (BaTiO3) and are used for temperature compensation in power supplies
, devices and of electronic components and prevent overheating inhigh-power LEDs
. For PTC thermistors there is also the term posistor.
This is a protected designation of the company Murata.