MF-SM075/60-2

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PTC (Positive Temperature Coefficient) resettable fuses are an important part of the electronic industry, offering a range of solutions for overcurrent protection. The MF-SM075/60-2 PTC resettable fuse is one such innovative solution that provides a one-time, automatic resetting of the circuit following an overcurrent incident. It offers an attractive combination of price, performance and reliability, making it a popular choice for use in many different application areas.

Application Fields

The MF-SM075/60-2 PTC resettable fuse is primarily used for protection of circuits in consumer products such as battery chargers, home appliances and power adapters. It can also be used for protection of medical devices, telecom equipment, and similar industrial equipment. This device is designed to be used in DC circuits, making it particularly suitable for protecting power sensitive components in mobile phone chargers, battery packs and similar products.

The device is also suitable for use in automotive circuits where it helps protect circuits from overcurrent damage and helps to open any short circuits which may become liable to cause permanent damage. The fuse also works effectively in aviation applications, and its wide temperature range makes it suitable for use in a wide range of industrial applications.

Working Principle

The MF-SM075/60-2 PTC resettable fuse works by using a thermally sensitive, positive temperature coefficient (PTC) element. When the current exceeds the rated level, the PTC element increases its resistance. This reduces the current to a safe level and prevents further damage to the circuit. As the temperature of the element decreases, the resistance also decreases and the current then resumes at its normal level.

The MF-SM075/60-2 PTC resettable fuse also has an auxiliary control circuit, which comprises of a zener diode and a resistor. This secondary circuit helps to control the current and provides protection to the PTC element against surges. The resistor provides a constant voltage output, while the zener diode helps to protect against overvoltage.

The fuse is also equipped with a thermal fuse, which prevents it from operating at temperatures higher than 225°C. This helps to ensure that the PTC element can operate safely and reliably. The fuse is available in a number of different sizes and designs, making it suitable for a wide range of different applications.

Conclusion

The MF-SM075/60-2 PTC resettable fuse is an important component in the electronic industry, offering an effective solution for overcurrent protection. Its combination of price, performance and reliability makes it ideal for use in a wide range of applications, from consumer products to medical and industrial equipment. Its simple working principle and compact design also make it a popular choice for many different applications.

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