SELFUSE ELECTRONICS (CHINA) CO. LTD - Shanghai

Selfuse electronics specializes in developing and manufacturing pptc(polymericpositive temperature coefficient) overcurrent protection devices. With the technique supports from china academy of sciences we offer you kinds of products ranged from msmd and smd surface mount PTC devices to radial leaded PTC device, axial leaded strap PTC devices and high voltage PTC devices. At the room temperature, resistance is almost as low as zero and current flows as if no resistance exists. In the case that overcurrent is happened, resistance will arise such that excessive current is not allowed to flow. Pptc element is able to sense reaction and become the state of current break, depending on the ambient temperature and use condition. If short break is relieved or ambient temperature decreases, resistance of the element will be soon restored in order to be usable as normal condition.