B59995C0120A054

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PTC (positive temperature coefficient) resettable fuses, also known as polyfuses, are a type of protection device most commonly used in line with electronic components to provide over-current protection. The B59995C0120A054 is an axial-lead, no-reflow, fast-blow PTC resettable fuse.

The B59995C0120A054 is a polyfuse, meaning that when it is subject to an over-current, it will increase its resistance and limit the current flowing through it. This prevents any further damage to the connected device by reducing the amount of current the power supply can demand. Once the current is stabilized and the over-current condition is removed, the resistance will reduce and the fuse will automatically switch back on, allowing the device to work normally.

The B59995C0120A054 is suitable for use in a variety of applications, from automotive and industrial to consumer electronics and computer hardware. Some common applications include the protection of integrated circuits, printed circuit boards, power supplies, wiring harnesses, motor controllers, and other electronic components. It is typically used in applications where a low-cost, reliable fuse solution is preferred.

The B59995C0120A054 PTC resettable fuse works by using the temperature coefficient of a semiconductor material, such as polycrystalline or amorphous silicon, to limit the maximum current that can flow through the device. When a normal, or below-normal current, flows through the fuse, the semiconductor will remain in a low-resistance state. However, when an excessive current is present, the semiconductor will heat up, increasing its resistance and limiting the current flow. This over-current is then constant- current limited and dissipated as heat.

The B59995C0120A054 is designed to function as a low-ohmic, yet reversible, fuse element, so that the current flowing through it can be limited and reset over and over again. This ability to be reset makes the B59995C0120A054 ideal for applications that require continuous protection and where over-current or over-voltage events must be prevented.

The B59995C0120A054 PTC resettable fuse can be used to protect user and system safety, reduce component damage, and minimize system downtime due to failure. It also can offer cost savings by eliminating the need to replace fuses and providing a lower total cost of ownership.

The B59995C0120A054 is an excellent choice for protecting circuits and components from over-current conditions. It offers reliable and efficient over-current protection and can be used for a wide range of applications. When using the B59995C0120A054, it is important to ensure that the correct wiring configuration is followed and that the maximum current rating of the fuse is not exceeded.

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