SMD1206P100TSA

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PTC resignable fuses are the most commonly used type of circuit protection components, widely used in a variety of applications. One of the most commonly used is the SMD1206P100TSA, which provides an effective protection in a wide variety of medium-powered electronic circuits. It is also highly reliable, offering superior temperature and voltage ratings with low profile and small footprint.

Overview

The SMD1206P100TSA PTC Resettable Fuse is a current-type limiting device which features a positive temperature coefficient (PTC) resistance. It is available in both radial-leaded and surface mount construction, offering performance up to 80V, up to 8A continuous current, up to 0.6Ohm open circuit resistance, up to 0.5 amp holding current, and a temperature range of -40 to +125° Celsius.When the current through the switching resistor rises to a certain level, it results in an increase in the voltage across the switching resistor, thus causing a rise in temperature within the device. This is known as \'thermal runaway\'. As the temperature rises further, the resistance of the PTC continues to rise, resulting in further rise in temperatures until the PTC reaches its initial temperature. At this point, the current through the switching resistor is effectively limited (or \'turned off\'), and the PTC begins to cool down. This process is repeated continually until no further thermal runaway occurs.Since PTCs are relatively stable and reliable devices, they are often used as over-current protection components in many electronic circuits. In addition, thanks to their temperature compensation nature, they are also effective in protecting sensitive circuits from accidental damage caused by extreme temperatures. The SMD1206P100TSA PTC Resettable Fuse is an ideal component for low profile, low current, high temperature, medium power applications.

Applications

The SMD1206P100TSA is well-suited for applications in which current limiting and over-temperature protection is required in medium-powered electronic circuits. Its wide temperature rating and low profile makes it an ideal component for use in places where size and height are of primary concern. Some of the most common applications include motor control, HVAC, lighting, TVs, computers, consumer appliances, automotive electronics, and industrial electronics.

In motor control applications, the SMD1206P100TSA PTC Resettable Fuse is used to provide over-current protection, preventing motor damage caused by excessive current draw or faults in the wiring. In HVAC applications, the PTC provides additional protection against overheating, ensuring a safe and comfortable indoor environment. When used in lighting, the SMD1206P100TSA helps prevent power surges that can damage wiring and other components. The PTC also helps protect TVs and other consumer electronics from power surges and over-temperature protection.

In automotive electronics, the SMD1206P100TSA acts as a resetable fuse, preventing short circuits and thermal runaway in circuits such as speakers, lights, and security systems. Similarly, it can be used to provide over-current and thermal protection in industrial electronics, such as motors, generators, and other devices that require reliable circuit protection.

Working Principle

The working principle of the SMD1206P100TSA PTC Resettable Fuse is based on a positive temperature coefficient (PTC) resistance. This means that the resistance of the switching resistor increases as temperature increases. As a result, when the current through the switching resistor rises to a certain level, the resulting increase in voltage across the switching resistor causes a rise in the temperature within the device. This is known as \'thermal runaway\'. As the temperature rises further, the resistance of the PTC also rises, eventually reaching its initial temperature level. At this point, the current through the switching resistor is effectively limited (or turned off). This process is repeated continually until no further thermal runaway occurs.

The SMD1206P100TSA PTC Resettable Fuse is available in a wide range of sizes and configurations, making it suitable for a variety of applications. Its extremely low profile and small footprint also make it ideal for applications where size and height are of primary consideration.

Conclusion

The SMD1206P100TSA PTC Resettable Fuse is a reliable and effective current-type limiting device, offering superior temperature and voltage ratings with low profile and small footprints. It is particularly well-suited for applications in which over-current and over-temperature protection is required in medium-powered electronic circuits. It can also be used as a resetable fuse in applications such as motor control, HVAC, lighting, TVs, computers, consumer appliances, automotive electronics, and industrial electronics.

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