PTCCL11H251HBE

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PTC resettable fuses are electronic components used in a wide variety of applications as a self-resetting overcurrent protector. They offer the advantage over traditional fuses of being able to reset after a fault has occurred, without needing to be replaced. One of the most common types of PTC resettable fuses is the PTCCL 11H251HBE.

Overview

The PTCCL 11H251HBE is a disc-shaped, surface mount PTC resettable fuse. The device is relatively small in size, with a body dimension of 3.2 mm x 1.6 mm and a height of 1.1 mm. The fuse is designed to provide overcurrent protection in a variety of applications, from 5V to 12V, such as electronic systems, cable assemblies, computing systems, and medical imaging.

Working Principle

When the current exceeds either the maximum current rating or the device\'s thermal resistance, the fuse\'s resistance increases rapidly due to its PTC material\'s highly resistive characteristics. This increase in resistance results in a significant drop in voltage and consequently limited current. As the current continues to rise, the device will begin to heat up and eventually reach its trip temperature, at which point the device will turn off and the current will drop. Once the device has tripped, it must be reset manually before it can be used again. This makes it especially useful in applications where overcurrent protection needs to be provided without the risk of the device being damaged by repeated trips.

Application Field

The PTCCL 11H251HBE PTC resettable fuse is suitable for a wide range of applications, from consumer electronics to automotive, medical, and industrial electronics. The device is often used in computers, tablets, and consumer electronics, where it provides protection from overcurrents, short circuiting, and initial inrush currents. In automotive systems, the device is used to protect electrical systems and components from overcurrents, under-voltage, and reverse polarity. In medical imaging applications, the device is used to protect the imaging components from overcurrents. Finally, in industrial applications, the device is used to provide protection from overloads, short-circuits, and over-voltage.

Conclusion

The PTCCL 11H251HBE is a small, surface mount PTC resettable fuse that offers overcurrent protection in a wide variety of applications. The device is designed to be compact and highly reliable, while also providing protection from overcurrents, short-circuits, and initial inrush currents. The device is suitable for a wide range of applications, from consumer electronics to automotive, medical, and industrial electronics.

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