PTC Resettable Fuses

A PTC (positive temperature coefficient) resettable fuse is a type of circuit protection device that is used to protect electronic circuits from damage due to overcurrent or overvoltage. PTC resettable fuses are commonly used in a variety of applications, including consumer electronics, automotive systems, and industrial equipment. PTC resettable fuses are different from traditional fuses in that they are designed to automatically reset after the overcurrent or overvoltage condition has been corrected. This means that the circuit will not need to be manually reset or replaced after a fault has occurred. PTC resettable fuses are typically made from a conductive polymer that exhibits a positive temperature coefficient of resistance. When a PTC resettable fuse is exposed to an overcurrent or overvoltage condition, the resistance of the polymer increases, causing the fuse to heat up and interrupt the flow of current. Once the overcurrent or overvoltage condition has been corrected, the fuse will cool down and reset, allowing the circuit to resume normal operation. PTC resettable fuses are a convenient and cost-effective alternative to traditional fuses, and they are widely used in a variety of electronic systems. They are typically small and lightweight, making them easy to install in a variety of different applications.