MINISMDC110F-2

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PTC Resettable Fuses

PTC resettable fuses, also known as Poly Fuses, are self-resetting thermal fuses based on a polymeric positive temperature coefficient of resistance (PPTC). The PTC resettable fuse was invented in the 1970s as a replacement for the traditional fuse. It is a highly reliable and cost-effective device that can be used as a circuit breaker in applications where fuses are impractical due to their limited lifespan.

MINISMDC110F-2 Application Field

The MINISMDC110F-2 is a PTC resettable fuse designed to provide robust over-current and over-voltage protection for a wide range of applications. They are designed to be used in applications where a traditional fuse would be impractical due to their limited lifespan. Examples of applications where the MINISMDC110F-2 is ideal include automotive, industrial, consumer, and medical devices. The MINISMDC110F-2 can also be used in a variety of critical protection functions for high-value equipment such as medical diagnostic equipment, avionics, and advanced communications systems.

Working Principle

The MINISMDC110F-2 is a PTC resettable fuse that is based on a PPTC element. This PPTC element is a unique material that has an electrical resistance that increases as temperature rises. This material has a flat temperature-resistance curve at temperatures below its Rated Trip Temperature (RTT). When the terminal\'s current rises above the Hold current (IH) rating of the device, the PPTC material\'s resistance rapidly increases (up to 300X) and limits the current flow. This in turn causes the temperature of the material to rapidly rise until it reaches its RTT, where its resistance stabilizes. This current-limiting process acts to protect the device and the circuit from an over-current or fault condition.

Once the fault condition has been cleared, the PPTC material slowly cools and its resistance decreases. This decrease in resistance allows the current to flow through the device again, up to the current rating of the device. The MINISMDC110F-2\'s unique design allows it to reset itself multiple times without having to replace the device, thus eliminating the costs associated with traditional fuses.

Conclusion

The MINISMDC110F-2 is an essential component for protecting circuits from over-current and over-voltage scenarios. Its self-resetting ability allows it to be used multiple times without having to replace the device, making it a cost-effective and highly reliable solution for a variety of applications. Its use of a PPTC material allows it to offer a superior level of protection than traditional fuses while still being a reliable and cost-effective solution.

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