What is PTC?

The meaning of PTC is positive temperature coefficient, which generally refers to semiconductor materials or components with a high positive temperature coefficient.

Usually, the PTC we refer to is a positive temperature coefficient thermistor, abbreviated as PTC thermistor.

PTC thermistor is a typical semiconductor resistor with temperature sensitivity. When it exceeds a certain temperature (Curie temperature),

Its resistance value increases step by step with the increase of temperature.

Ceramic PTC is a semiconductor ceramic made mainly of barium titanate and sintered with a small amount of rare earth added.