B59995C0160A051

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PTC Resettable Fuses

PTC resettable fuses are among the most important elements in electric circuits as they provide necessary protection against over current, over temperature and other hazardous events. PTC resettable fuses have multiple applications, from over current protection of cable assemblies to resetable over temperature protection of electrolytic capacitors and DC-DC converters.

The B59995C0160A051 PTC resettable fuse is a 221 mOhm resettable fuse with a rating of 16A. It functions by using a combination of resettable fusing and temperature sensing elements to regulate current flow and temperature in an electrical circuit. Its features include a very low internal resistance, high surge energy hold-off, and high overload rating, enabling it to handle current surges up to a level approximately double the rated current. The B59995C0160A051 also provides a very wide operating temperature range (- 55°C to 125°C).

The B59995C0160A051 PTC resettable fuse\'s working principle is based on the property of polymeric materials called "polyswitches". Polyswitches are tri-stable materials, which can exist in either a low, high or self-healing conductive state depending on the ambient temperature, or applied voltage respectively. When a tri-stable polymeric material exceeds a certain level of temperature or voltage (the "trigger" point) the material changes from low to high conductivity, thus allowing for the flow of current in the circuit it is protecting. After the current passes through the circuit and the voltage/temperature falls below the trigger point, the polymeric material is returned to its original nonconductive state and the circuit is reset. This trigger point is defined by the properties of the polymeric material and is determined by the manufacturer. In the case of the B59995C0160A051, the trigger point is 12A at 25°C.

The B59995C0160A051 PTC resettable fuse is primarily designed to protect a circuit from over current conditions, and it is used in many applications such as power supplies, AC/DC adapters, servers, battery packs, LED lighting, automotive electronics, and solar panel systems. Additionally, the B59995C0160A051 can also be used for inrush current limitation, soft start, and over temperature protection.

In conclusion, the B59995C0160A051 PTC resettable fuse provides multiple benefits in a broad range of applications. It is capable of regulating both current and temperature and is designed to protect a circuit from over current conditions and to prevent the uncontrolled increase of temperature. It is a reliable and cost-effective solution for both industrial and consumer applications.

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