B59890C0120A070

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PTC Resettable Fuses are a type of electronic circuit protection devices, and the B59890C0120A070 is one such device. The main function of this type of fuse is to protect electronic components from overloads by sensing when their current has exceeded a preset limit and then opening the circuit. These types of fuses are typically used in industrial, automotive, and consumer electronics applications, as well as in medical devices and telecommunications equipment.

The B59890C0120A070 consists of a positive temperature coefficient (PTC) element and a set of pins. The PTC element, which is sensitive to temperature rises, is housed in a ceramic body and connected to the pins. Once the PTC element melts, it increases the resistance of the device, preventing current from flowing through it.

This particular device is a PTC Resettable Fuse with an ampere rating of 0.07 A. The fuse is rated for working voltages of 25 VDC or lower and it has a standard lead length of 7 mm. It is typically used in applications where low-current protection is needed. The device is mostly applicable in consumer electronics, such as portable audio players, automotive circuit protection, AC/DC adapters, and even solar modules.

The working principle behind the B59890C0120A070 is quite simple. The fuse consists of a PTC element which is designed to detect and respond to an increase in current. When the current passes through the device, the element becomes warmer and increases its resistance. As the current rises, the element continues to warm and enter its blocking region, eventually preventing the current from passing through the device and opening the circuit.

Once the element has opened the circuit, the system must be reset by manually pressing the reset button on the device. This resets the element, allowing current to once again flow through the fuse. The reset operation is quite simple and can be done in seconds.

In summary, the B59890C0120A070 PTC Resettable Fuse is an electronic component designed for low-current circuit protection applications. It consists of a PTC element housed in a ceramic body which increases its resistance when current passes through it, effectively blocking the current and opening the circuit. The device is rated for working voltages of 25 VDC or lower and it can be reset manually by pressing the reset button. It is widely used in consumer electronics, automotive circuit protection, AC/DC adapters, and even solar modules.

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