RXEF065-2 Circuit Protection

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PTC Resettable Fuses, popularly known as Polymer Positive Temperature Coefficient, are fuses which reset when the load powering them is removed. Rather than releasing to completely open, as is the case with conventional fuses, the PTC Resettable Fuses device will reset itself when the overloaded current is removed from the circuit. This self resetting behavior eliminates the breakdown of the circuit and makes it more robust. The RXEF065-2 is one of these versatile PTC Resettable Fuses, with many application fields and a working principle that makes it particularly useful in certain circumstances.

The RXEF065-2 is proposed for use in Li-Ion batteries, and its application fields range from smart phones to digital cameras and beyond. With its low resistance, the RXEF065-2 is capable of handling higher currents when compared to other PTC Resettable Fuses, making it suitable for an increased versatility of applications. It has a protection current of 1.5A and a rated voltage of 3.3V. This makes it an optimal choice for such applications as rechargeable batteries, USB ports, and other similar devices.

The working principle is quite simple, yet efficient. The RXEF065-2 features two protection modes: temperature-activated fuses (TAF) and over-current protection (OCP). The TAF will activate when the internal temperature of the RXEF065-2 reaches a certain critical level, while the OCP will activate when the current going through the RXEF065-2 exceeds the device’s rating. In both cases, the device will shut down, isolating the circuit from the power source until the over-current or temperature is removed. This prevents damaging the device and the associated circuitry.

In order to reset the device, the RXEF065-2 must be manually reset. This can be done by cutting the power to the device. After the power is removed, the RXEF065-2 will reactivate in a few seconds, restoring the circuit connection. This simple process makes it easier to use and maintain than standard and more complex resettable fuses.

The RXEF065-2 is an ideal solution for the protection of sensitive electronic devices. It is designed to protect against over-voltages, over-currents, temperature extremes and more, so it can be used in many different applications where reliable protection is needed. Its simple, manual resetting process makes it extremely easy to use, and its low resistance allows it to be used in circuits with higher currents than other PTC Resettable Fuses.The specific data is subject to PDF, and the above content is for reference