VTP175ULHF

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PTC Resettable Fuses are used to protect electronic applications against short-circuits and other types of overcurrents by electronically disconnecting the application and preventing further damage. While traditional fuses physically break when too much current is passed through them, Resettable Fuses, also known as Polymer Positive Temperature Coefficient (PPTC) devices, are designed to reset themselves once the short-circuit or other type of overcurrent condition has ended and the application can be reconnected. VTP175ULHF Resettable Fuses are one such PTC component.

VTP175ULHF Resettable Fuses are designed to protect applications in harsh environments. The component comprises a thin film prone to deformation when exposed to high temperatures caused by excessive current. This performance is a result of the PTC technology, which is based on a negative temperature coefficient characteristic of an organic polymer, polyphenylene oxide (PPO). VTP175ULHF Resettable Fuses house a flame retardant cladding, allowing for an “automatic” reset once the problematic overcurrent situation is over.

The VTP175ULHF Resettable Fuses provide robust overcurrent protection, with the ability to operate in temperatures up to 175°C. Thanks to their hermetically sealed construction, these components resist dust, dirt, oil, and other environmental contaminants. In addition, the VTP175ULHF Resettable Fuses can operate withstanding shock and vibration levels up to 32g and have a long service lifetime of up to 100 hours.

The VTP175ULHF Resettable Fuses provide a preset trip current of 3-5A without the need for adjustment. This preset value makes the components suitable for a wide range of applications, including telecom, computer, lighting, consumer electronic, automotive, power, and industrial systems, as well as safety-, security-, and healthcare-related items.

So, the working principle behind VTP175ULHF Resettable Fuses is simple and effective: a PTC charged current passes through the device, and when the current reaches a predetermined level, the device acts to reduce the current automatically to protect the system. Once the over current situation is abated, the device automatically resets itself and remains in a standby state until the next overcurrent.

This capability brings several benefits to the user. Apart from being safer and more reliable compared to traditional fuses, these components are designed to reduce energy waste. In addition, the VTP175ULHF devices are environmentally friendly with regards to manufacturing by running under ambient temperatures. This makes them suitable for a range of energy sensitive applications.

Taking into account all the features described above, it can be concluded that the VTP175ULHF Resettable Fuses are a great choice for overcurrent protection. Their ability to reset after an overcurrent, dust and dirt resistance, shock and vibration resistance, as well as their long service lifetime make them suitable for a variety of applications in both consumer electronics and industrial settings.

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