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PTC Resettable Fuses

A PTC resettable fuse, is an electrical component consisting of two major parts: a Positive Temperature Coefficient (PTC) element, and a secondary thermal fuse. It has the ability to detect electrical overcurrents and react quickly to limit excess current flow. PTC resettable fuses are useful in a variety of electronic and industrial applications, including motor control, automotive electronics, industrial automation, and telecommunications.

MF-SM200-2 Application Field and Working Principle

The MF-SM200-2 is a Precision PolySwitch PTC Resettable Fuse. It is designed for use in a wide variety of application fields, and provides steady-state and overcurrent protection in any environment. It has a wide range of current ratings, from as low as 10mA to as high as 15A, with a hold current of 200mA.

The working principle of the MF-SM200-2 is simple. When over-current occurs or is detected, the element\'s resistance increases quickly and exponentially, and the current is limited. If the current returns to its normal limits, the element\'s resistance returns to its original value. In case of prolonged over-current, the secondary thermal fuse will open, breaking the circuit.

The PTC Elements of the MF-SM200-2 are constructed using PolySwitch Resettable Technology, allowing the module to repeatedly reset itself after over-current occurs without degradation of performance. The device also features excellent Resistive Switching durability and superior reliability, making it an ideal solution for a variety of industrial applications.

Benefits

One of the main benefits of the MF-SM200-2 PTC Resettable Fuse is its ability to provide repeatable and reliable over-current protection and fast circuit interruption. This helps protect electronics from over-current conditions and ensures a longer service life. Additionally, the PTC Resettable Fuse eliminates the need for replacement fuses, as it is able to reset itself after each over-current event.

The device also provides a wide range of current ratings, making it suitable for low- and high-power applications. The small size of the module further enhances its versatility, allowing it to be used in a wide variety of applications. Finally, the device is reliable and durable, and its performance will not degrade over time.

Conclusion

The MF-SM200-2 is a precision PolySwitch PTC Resettable Fuse designed for a wide variety of applications. Its ability to limit over-current conditions and reset itself after each occurrence makes it a reliable and durable solution, and its wide range of current ratings makes it suitable for low- and high-power applications. Ultimately, the MF-SM200-2 is an ideal solution for any application where reliable and repeatable over-current protection is required.

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