SMD2920P100TSA

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PTC resettable fuses are increasingly becoming popular among those involved in electrical engineering, due to their ability to protect circuits from overcurrents by cutting off the current when it rises above a particular threshold. The SMD2920P100TSA is a PTC resettable fuse from SMA Technology Co. Ltd., which is designed to offer reliable protection in a variety of applications. This article will explore the application field of the SMD2920P100TSA, as well as its working principle.

Applications of the SMD2920P100TSA

The SMD2920P100TSA can be used for a range of applications, including computers, consumer electronics, medical equipment, and automotive electronics. It is quickly becoming the preferred choice for high-end electrical systems, as it provides reliable, automatic protection against power surges and overcurrents. It has been tested and certified for use in the most demanding environments, and is designed to withstand temperatures ranging from -40˚C to +125˚C, making it suitable for a wide range of applications.

Most importantly, the SMD2920P100TSA is approved for use in UL498 and IEC 60950-1 approved systems, making it an ideal choice for those looking for reliable protection. With its small size and low profile, it can be easily embedded into even the most compact circuits. Furthermore, the SMD2920P100TSA has excellent surge and ESD protection, making it suitable for a range of applications, such as protection for open power/data lines in consumer electronics, computers, telecom equipment, and more.

Working Principle

The SMD2920P100TSA is a polymeric positive temperature coefficient (PPTC) device that uses a polymer-based material that exudes electrical conduction when heated by the current passing through it. When the current passes through the device, it quickly increases in temperature and the polymer expands, creating a resistance between the two ends of the device, effectively limiting the amount of current that can pass through it. When the current becomes too high, the polymer will reach its threshold temperature and expand, creating a high resistance that prevents further current from passing. Once the current has been cut off, the device will return to its original state and reset, allowing current to flow through again.

This resetting effect is the key feature of the SMD2920P100TSA, which makes it highly desirable for use in systems where frequent overcurrents may occur. With the SMD2920P100TSA, the user does not have to manually reset the device, as it automatically does so when the current returns to normal. Furthermore, the device’s small size and low profile make it highly suitable for use in compact systems, where space is at a premium.

Conclusion

The SMD2920P100TSA is a polymeric positive temperature coefficient (PPTC) resettable fuse from SMA Technology Co. Ltd., designed to offer reliable protection against overcurrents and power surges. It is suitable for a range of applications, such as computers, consumer electronics, medical equipment, and automotive electronics. It is UL498 and IEC 60950-1 approved, making it an ideal choice for those looking for dependable protection. In addition, its small size and low profile make it suitable for use in even the most compact circuits.

The device works by using a polymer-based material that exudes electrical conduction when heated by the current passing through it. When the current reaches a high level, the polymer will reach its threshold temperature and expand, creating a high resistance that prevents further current from passing. Once the current has been cut off, the device will reset itself, allowing current to flow through again. Its ability to reset itself makes it highly desirable for use in systems where frequent overcurrents may occur.

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