The Thermistors - PTC (Positive Temperature Coefficient) are a type of sensor that measures temperature through resistance changes within the material. They are unique in their resistance increases as the temperature rises, hence the term Positive Temperature Coefficient. The main function of these devices is to monitor and control temperatures in various applications, playing a crucial role in safety and performance optimization. They can also serve as over-current protectors, converting excessive currents into heat to subsequently increase their resistance and limit current flow.
Thermistors - PTC are useful in various specific applications such as temperature sensing in industrial processes, home appliances, and automotive systems, among others. Due to their high sensitivity to temperature changes, they offer excellent precision in temperature control systems. Additionally, their ability to limit current in over-current situations makes them suitable for circuit protection in electronics. Key manufacturers of Thermistors - PTC include TDK, Vishay, Bourns, Murata, and Honeywell.