Positive Thermal Coefficient devices(PTC),provide
protection for electrical and electronic devices.
using conducting strips of metal imbedded
Under normal conditions, the devices resistance is near zero,
but over-current conditions will heat the PTC and
polymer, increasing the impedance. When current returns to
normal, the components cool down, returning to their orig
shape and very low levels of resistance.

Applications:Over-current and over
automotive electronics
l Hard disk drives
l Point-of-sale (POS) equipment
l PCMCIA cards
l Power over Ethernet (POE)
l HDMI 1.4 Source protection
l Computers & peripherals
l Industrial control
l Security systems