PTC Heating Film (P-Series)
PCT (Positive Temperature Coefficent) can be defined as an element that, once the temperature reaches a certain level, demonstrates rapid increase of resistance due to rapid temperature increase caused by ‘phase transition’. It is a type of n-type oxide semiconductor given conductivity by adding a small amount of rare earth resources to BaTio 3, capable of shifting the Curie temperature by replacing a part of Ba with Sr or Pb. That is, “the main characteristic of PTC is that its resistance rapidly increases at a certain temperature (the Curie temperature)”. In addition, PTC is being used in a variety of products, for its three characteristics (Resistance-Temperature, Voltage-Electric current, Electric current-Time).