Polytronics Technology Corp. provides you an innovative protective solution for reliable electronics systems by building from PPTC (Polymeric Positive Temperature Coefficient) overcurrent protection devices, ESD electronic packaging component and integrate into power control system.

Since the importance of power protection increases with the complexity of modern electronic systems, you will be very much interested in our EVERFUSE^TM! 

Features The small-sized EVERFUSE^TM with various form factors achieves overcurrent /overheat protection and acts as voltage divider/current limiter. With its resettability, EVERFUSE^TM surpasses the fuses which can only be used once, excels ceramic PTC's which consume more power and is superior to current-limiting IC's which are more expensive.

Function At the room temperature, resistance is almost as low as zero so that current flows as if no resistance exists. In the case that short break causes heat to increase, 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, depend-ing 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.

Applications Our EVERFUSE^TM is ideal for low voltage over-current circuit pro-tection applications such as Com-puters, Peripherals, General Elec-tronics, Battery, Telecommunication etc. And it can be applied to almost anywhere there is a low voltage power supply and a load to be protected.

Overcurrent Protection Technology Comparison

	Advantage	Disadvantage
Fuse	Low Power Consumption No Leakage Current Suitable for High Voltage & Current Circuit	Unable to Reset Large in Size Throwaway Nature-Costly
CPTC	Resettable Suitable for High Voltage & Current Circuit	Long Time to Trip High Power Consumption NTC Effect in High Temperature
Bimetal	Resettable Low Resistance No Leakage Current	Short Cycle Life Not Suitable for Microelectronics Circuit
Current-limiting IC's	Resettable Fast Response in Current Control Capable to Provide Feedback Signal	Voltage Sensitive Limited Inrush Current Protection Susceptible to Software Interference High Cost
PPTC	Resettable Low Power Consumption Low Resistance Small Footprint	No Line Voltage(110V-220V)Products Leakage Current