YQD120N0070

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PTC resettable fuses, sometimes referred to as polymeric positive temperature coefficient (PPTC) resettable fuses, are thermal-sensitive current-limiting devices that combine the properties of a PTC thermistor and a fuse. They differ from PTC thermistors in that, once they have tripped, they can be reset to continue the circuitry protection. The YQD120N0070 is a type of PTC resettable fuse.

At first glance, the YQD120N0070 looks like a traditional fuse as it is a cylindrical package equipped with wire leads. However, instead of a traditional link within the cylinder, there is a PTC device, or plastic, which melts and deforms when there is an overcurrent. The sum of the current that flows through the component is what causes the deformation.

Since the component\'s cylinder is made of plastic, its geometry will change from a round to a flat shape when the current is too high. This unrecoverable deformation prevents the continuity of the circuit, and achieves the purpose of the fuse.

When the overcurrent is removed, the component cools down and the PTC device goes back to its starting shape, allowing the continuity of the circuit.

The YQD120N0070 PTC resettable fuse has a variety of applications. For example, it can be useful in automotive applications, assuring continuity and safety between the vehicle body frame and the battery. In addition, they can be found in home appliances such as air-conditioners to protect from overcurrent. The YQD120N0070 can also be found in other applications such as drones, printers, battery chargers, digital cameras and countless others.

The superior performance of the YQD120N0070 PTC resettable fuse is partially due to its unique structure and materials. The component includes two electrodes, a fixed electrode and a movable electrode, which are driven by a piezoelectric element. The fixed electrode is made of metal, while the movable electrode is composed of a polymeric or elastomeric material.

The plastic material guarantees a high level of thermal stability and can handle over-voltage conditions, protecting any connected component from damage. This is an advantage compared to traditional fuses, which can fail due to voltage and temperature changes.

PTC resettable fuses like the YQD120N0070 have a lot of advantages over traditional fuses. They are very practical due to their resetting capability, and they are more reliable as they have a much better thermal sensitivity. Although pricier than a traditional fuse, the YQD120N0070 PTC resettable fuse is still great value for money and can be found in multiple applications.

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