B59940C0120A070

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A PTC resettable fuse, also known as a polymeric positive temperature coefficient (PPTC) or polymer-based positive temperature coefficient (PTC) device, is an electrical component that functions much like a standard fuse. The majority of standard fuses operate through a wire being the anemic link, where the circuit is broken when too much current is applied. By contrast, a PTC resettable fuse reduces current when it is too high and will reset automatically when current levels decline and remain stable.

B59940C0120A070 is a PTC Resettable Fuse, mainly used in the fields of automotive, consumer electronics, and telecommunications. It has a melting temperature of 105℃, a holding current of 120A, a trip current of 162A, and a trip time of 2.988 seconds. Its design leads to high efficiency and greater accuracy.

The working principle of a PTC resettable fuse is based on the property of a thermoplastic material expanding when it reaches a certain temperature. When current passes through the material, it heats up and expands. Think of it like a spring-loaded fuse. When the current is too high, the fuse will comprehend and reduce its flow. This prevents any burning or melting of the fuse due to the current overload. When the current passes its rated value, the PTC material thermally expands and tries to restrict current, eventually causing the current to reset.

Overall, the PTC resettable fuse B59940C0120A070 is designed to provide safety and promote reliable operations. Its resettable properties offer the advantage of greater versatility in various applications where many traditional fuses are not suitable. It is increasingly gaining acceptance in a broad range of markets due to its superior performance, cost benefits, and desired features.

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