250R145U

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PTC resettable fuses offer advantages over traditional fuses and other circuit protection techniques. PTC resettable fuses are easier to use and can offer better reliability and safety when protecting critical circuits. The 250R145U is a type of PTC (positive temperature coefficient) resettable fuse, and it is used in a growing number of applications. In this article, we will explain the applications and working principle of the 250R145U.

Applications of 250R145U

The 250R145U is widely used in electrical and electronic devices because it is relatively low cost, reliable, and easy to use. It is often used in automotive, industrial, medical, military, and telecommunications applications. Specifically, it is used in a variety of automotive applications including air bag systems, seat belt tensioners, airbag inflators, heated seats, and power windows. It is also commonly used to protect DC motors, LCDs, LED lights, audio systems, power supplies, and computer peripheral devices.

Working Principle of 250R145U

The 250R145U is a self-resetting fuse that offers reliable over-current protection. It functions by introducing a small internal resistance. When the current passing through the fuse exceeds the rated current, the resistance of the device increases as the heat is generated. This increase in resistance results in the heat being removed from the device, thus resetting the fuse and preventing further damage.

The 250R145U is designed to offer a stable resistance, meaning that the fuse will not overheat or become damaged due to excessive temperature. It also provides effective protection from short circuits, vibration, and other environmental factors. In addition, the 250R145U is designed to be able to tolerate peak current surges of up to 10 times its rated value.

The 250R145U is a compact, cost-effective solution for over-current protection in many applications. It is easy to install and has a wide operating temperature range (-55 to +105° C). The 250R145U is also RoHS compliant and UL certified, ensuring it is safe to use in a wide variety of applications. Furthermore, it has a long life expectancy, with a rated life of up to 200,000 cycles.

In summary, the 250R145U is a reliable, cost-effective, and easy to use PTC resettable fuse that offers flexible protection against over-currents. It is widely used in automotive, industrial, medical, military, and telecommunications applications, and its reliable protection ensures optimal safety and performance.

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