FEMTOSMDC035F-2 Circuit Protection

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PTC Resettable Fuses are increasingly important to consumer electronics as demand for safer and longer lasting products continues to arise. Flicry FEMTOSMDC035F-2 PTC Resettable Fuses are designed to help in meeting those needs. In this article, we discuss the application field and working principle of the FEMTOSMDC035F-2.

The FEMTOSMDC035F-2 is a High Energy Value, UL248-14, UL/IEC 62368-1, and EN1414 approved PTC resettable fuse suitable for most higher wattage consumer applications. It finds applications ranging from AC/DC to LED lighting, computing, and home entertainment. It helps in protection from over-current, over-temperature, and short circuit faults in the circuit.

The FEMTOSMDC035F-2 offers a programmable temperature rise from 85°C to 125°C with a maximum resistance range from 0.003-0.1 ohms. It offers thermal stability, fast resetting, wide current range and pulse capability up to 6A. It helps in protection from over-current (tripping range 6-36A) and over-temperature (tripping range 125-165°C). It can be easily mounted onto PCB by soldering or dip mounting.

The working principle of the FEMTOSMDC035F-2 is based on Polymeric Positive Temperature Coefficient (PPTC). The Polymeric material, Polyethylene, is chosen to be used as the resettable fuse material. It exhibits a progressively increasing resistance with temperature. At normal ambient temperatures, the resistance of Polyethylene is very low, hence allowing the current to flow through the device. When the temperature increases, due to passing of higher than normal current, the resistance of the Polyethylene increases too providing effective protection.

The FEMTOSMDC035F-2 uses Thermal Fuse, which provides protection by tripping at an over-current condition, thus providing additional safety. The Thermal Fuse helps in providing protection from an over-temperature condition, allowing the device to cool down before resetting. With the combination of Thermal Fuse and Polymeric material, the FEMTOSMDC035F-2 provides protection from both over-temperature and over-current faults.

As compared to traditional fuses, the FEMTOSMDC035F-2 can automatically reset during normal conditions. This helps in eliminating the need for manual reset and allows the device to start operations again, thus providing a safe and easy to use device. The device is equipped with both Over-Current and Over-Temperature tripping mechanism for providing enhanced protection. Also, the device is RoHS compliant and has a wide operating temperature range of -40°C to 105°C.

In conclusion, Flicry FEMTOSMDC035F-2 PTC Resettable Fuses are an ideal fit for most higher wattage consumer applications such as AC/DC, LED lighting, computing, and home entertainment. It helps in protecting from over-current, over-temperature, and short circuit faults. The key features of the device are its ease-of-use, thermal stability, fast resetting, wide current range and pulse capability, RoHS compliance, and wide operating temperature range.

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