VTP145ULF

PTC Resettable Fuses are a common form of electrical protection. They can prevent overcurrent, overvoltage, and shorts, saving equipment and preventing disasters. The VTP145ULF is a fast-acting, small-sized, PTC Resettable Fuse. This fuse is specifically designed to be used in automotive, telecommunications, consumer electronics, and other applications where high-speed current control and protection is needed. In this article, we will discuss the application field and working principle of the VTP145ULF.

Application Field

The VTP145ULF is specifically designed for use in automotive, telecommunications, consumer electronics, and other applications. It can be used in applications such as charging ports, DC-DC converters, power supplies, LED lighting, and other sensitive electronic components. The fuse can help protect the equipment and components from overcurrent, overvoltage, and shorts and can help ensure the safety of the people and property around it.

Working Principle

The VTP145ULF is a fast-acting, PTC Resettable Fuse. It is made up of two PTC thermistors, which are connected in series. The thermistors are set with a certain current-temperature characteristics, so when either one of them senses an excessive current, it will start to increase its resistance. This will result in the current being reduced and the fuse will be reset automatically after the current drops below the maximum set point. This fuse is able to reset quickly and safely with minimal impact on connected devices or equipment.

The VTP145ULF is designed to provide current protection in applications where high-speed current is needed. The fuse is able to disconnect within 40 milliseconds when the current exceeds its rated current, and reconnects within 10 milliseconds after the current is below its rated current. This helps ensure that the current remains in its safe limits and prevents any potential damage to the connected equipment.

Conclusion

The VTP145ULF is a fast-acting, small-sized, PTC Resettable Fuse that is specifically designed for use in automotive, telecommunications, consumer electronics, and other applications. This fuse can help protect the connected equipment from overcurrent, overvoltage, and shorts and can help ensure the safety of the people and property around it. The fuse has a fast response time and is able to reset quickly and safely with minimal impact on the connected devices or equipment.