B59990C0080A051

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PTC Resettable Fuses are fuses that, unlike conventional safety fuses, can be reset after a fault or overload. This type of fuse has an integrated positive temperature coefficient (PTC) resettable element. B59990C0080A051 is a PTC Resettable Fuse from the B59990C family manufactured by EPCOS, a subsidiary of TDK.

The B59990C0080A051 has a rated current of 8 A and a rated voltage of 250 VAC and 250 VDC. It is a UL recognized component whose material category is UL 710200, 3-8 Amp. The device is designed for applications in consumer, industrial, and healthcare applications. The overall size of the fuse is small, making it easy to mount on boards. It also features a wide operating temperature range (-40 °C to +125 °C).

How PTC resettable fuses work: PTC resettable fuses work through the integration of two components: a positive temperature coefficient (PTC) thermistor and a trip mechanism. The thermistor acts as a temperature monitor and initiates the trip mechanism when the current rises to an unsafe level. When the thermal energy generated from the current has dissipated, the trip mechanism is reset, again allowing current to flow through it. The trip mechanism will keep tripping and resetting until the source of the overload is removed. This is an advantageous feature for applications in which a safety fuse would need to be replaced due to an overload.

The major advantages of PTC resettable fuses include their small size, wide operating temperature range, and the fact that they do not need to be replaced after a fault or overload as with conventional safety fuses. B59990C0080A051 has all these features and is thus suitable for various applications in consumer, industrial, and healthcare systems.

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