TCF250-180

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PTC resettable fuses are an important type of fuse used today in many applications. In this article, we will be discussing the TCF250-180, an important PTC resettable fuse. We will look at its application field and its working principle, as well as its benefits and limitations.

The TCF250-180 is a polymeric positive temperature coefficient (PPTC) resettable fuse. These fuses are typically used in applications where overcurrent or short circuit protection is needed. The device is made of a heat-sensitive polymer material that constricts when the current running through it exceeds the rated value. This causes the resistance of the device to increase, thus reducing the current flowing through it.

The rated current of the TCF250-180 is 180mA. It has a rated holding current of 100mA and a maximum voltage rating of 32VDC. The device has a maximum power rating of 5.76W and a thermal rise of 3.94°C per watt. The fuse also has a wide operating temperature range of -40°C to 125°C.

The working principle of the TCF250-180 is quite simple. When the current through the device surpasses the rated level, the resistance of the fuse increases. This reduces the current that is flowing through the device and essentially trips the fuse. To reset the device, it simply needs to be cooled down, which reduces the resistance of the material and allows the current flow to return to normal.

There are a number of benefits to using the TCF250-180. It is much smaller and lighter than traditional fuses and is also more reliable. The device also has a much quicker response time to overcurrent and short circuit conditions. Additionally, the fuse is resettable, meaning that it can be reset after it trips instead of needing to be replaced. This helps reduce maintenance time and cost.

The only real limitation of the TCF250-180 is that it is not suitable for applications with high inrush currents. In such applications, the device can trip due to the sudden excessive current load, causing the device to fail to reset. To be sure, it is always important to double-check the ratings and specifications of the fuse before using it.

In conclusion, the TCF250-180 is an important PTC resettable fuse commonly used for overcurrent and short circuit protection. It has a wide range of benefits and advantages over traditional fuses, including its small size, low weight, reliability, and quick response time. However, the device is not suitable for applications with high inrush current and should be used with caution.

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