YQS5855PTF

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Introduction: PTC (positive temperature coefficient) resettable fuses are used to protect electronic boards from overload and short-circuit current by quickly tripping when certain levels of current are exceeded. The YQS5855PTF is a device that can be used for this purpose, and it has a variety of applications and a unique working principle.

Applications: The YQS5855PTF has several different applications. It can be used in many consumer electronics as a protection device for power supplies. It can also be used as a protection device in reference designs, display boards, and computer systems. Furthermore, it is suitable for use in auxiliary circuits and automotive electrical systems.

Working Principle: The YQS5855PTF has an asymmetrical structure and contains a PTC element and a series resistor. When the circuit is opened, the current runs directly through the PTC element, which increases its temperature and gradually reduces its resistance. As the resistance drops, the current in the circuit increases until it reaches the preset trip point, and the fuse automatically trips itself. The device then cools down, and the resistance returns to normal and the device is reset. This resetting feature is what makes it a resettable fuse.

Conclusion: The YQS5855PTF is a PTC resettable fuse with many applications and a unique working principle. It can be used in many consumer electronics, reference designs, display boards and automotive electrical systems. The device has an asymmetrical structure that contains a PTC element and a series resistor which, when opened, triggers the resetting feature. This device is a reliable option for providing protection from overload and short-circuit current.

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