B59985C0120A051

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PTC Resettable Fuses are widely applied in electronic equipments. By combining fusing and circuit protection in one component, they help to provide surge protection and prevent overloads, short circuits and over temperature potential faults. In this article, we will discuss the application field and working principle of B59985C0120A051.

Among all the PTC Resettable Fuses, the B59985C0120A051 has excellent features such as: 120-VAC rating, UL 94V-0 recognized, no-load voltage drop less than 140 mV, current rating of 2A, response time of 300µs and temperature range between -20°C and +85°C. It provides excellent thermal, overload and short-circuit protection.

The B59985C0120A051 is an ideal choice for consumer, industrial and commercial applications. It is suitable for use in power supplies, chargers, adapters, gaming consoles, copiers, office machines, dental chairs and other electronic equipment that requires over-temperature protection.

In terms of working principle, the B59985C0120A051 utilizes self-regulating Polymeric Positive Temperature Coefficient (PPTC) technology. This fuse consists of many small PTC elements which are connected in series. When the current load increases, the temperature of these small PTC elements increases as well and the impedance of these elements rises rapidly.

This impedance rise manifests itself as a voltage drop across the elements, thereby reducing the amount of current through the fuse. As the current is reduced, the temperature of the elements is also reduced, which allows them to return to their original state. This process of current reduction occurs over a short period of time, thereby providing excellent over-current protection. With the combination of self-regulating PTC elements and fast response time, the B59985C0120A051 provides reliable and effective protection.

The B59985C0120A051 can be reset by removing the over-current condition; the fuse will return to its original state once the current load is disrupted. This feature is very helpful in applications where the fuse may be required to operate multiple times throughout its lifetime.

In conclusion, the B59985C0120A051 is a great example of a PTC Resettable Fuse and can be used for a wide range of consumer, industrial and commercial applications. It provides excellent thermal, overload and short-circuit protection, and its self-regulating Polymeric Positive Temperature Coefficient (PPTC) technology ensures reliable and effective protection even during cycling current loading. The reset feature is also a great benefit, as it allows the fuse to be used multiple times throughout its lifetime.

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