B59875C0120A070

PTC Resettable Fuses

PTC Resettable fuses, also known as polyfuses, are a type of overcurrent protection device used to protect electronic circuits from overheating or short-circuiting. The PTC Resettable fuse, in the form of a ceramic-encapsulated diode (also called polyfuse), is a temperature-sensitive resistor that links the circuit, allowing normal current flow, until it is overloaded. When an overload reaches a certain point, the fuse “opens” or “trips”, severing the connection. Unlike traditional fuses, this type of fuse can be “reset” when the current falls below the trip point.

The B59875C0120A070 is one such PTC Resettable Fuse, designed to protect sensitive electronic components from overcurrents. It is a one-shot device that automatically trips an electric circuit when a specified overload occurs, and then reinstates the current flow when the fault or overload is removed. The B59875C0120A070 is a PTC Resettable Fuse with a current rating of 2A and a voltage rating of 60V.

The working principle of the B59875C0120A070 is based on the characteristic of PTC materials, which are temperature-sensitive and show a very steep positive temperature coefficient meaning that when the temperature of the material reaches a certain limit, its resistance increases rapidly. The resistance of the fuse depends on its rating, with a 10A rated fuse having a higher resistance at a higher current than a 2A rated fuse.

The casing of the B59875C0120A070 is made of plastic, with the strip of PTC material housed inside. When a normal current passes through the fuse, the PTC material will experience a small rise in temperature due to its positive temperature coefficient, while still remaining below the trip point. This allows the current to flow freely. However, if the current passing through the fuse exceeds the rated value, then the temperature of the PTC material rises quickly and the resistance of the material increases rapidly, causing the fuse to trip and break the electrical circuit.

The B59875C0120A070 is used in many applications, including power supplies, consumer electronic products, automotive electronics, chargers and other overcurrent protection applications. It is used to limit current that could damage sensitive components or cause a fire. It is also used to prevent overloading of a power supply, or when a large current spike is expected. The fuse is relatively inexpensive and easy to replace, making it a popular choice for many designers.

In concluding, the B59875C0120A070 PTC Resettable Fuse is a highly useful device, suitable for a variety of applications, that is simple to use and comes at a reasonable price. It is a great tool for protecting a circuit from damaging overloads while allowing for current to flow freely when it remains within safe limits.