SMD2920P200TSA

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PTC Resettable Fuses are a widely used form of overcurrent protection devices, finding use across diverse applications and industries. The SMD2920P200TSA is a particularly popular example, distinguished by its miniature size and high-speed performance, which make it suitable for a wide range of applications. In this article, we take a look at the characteristics of the SMD2920P200TSA, its range of applications and its working principle.

Characteristics

The SMD2920P200TSA is a surface-mount PTC resettable fuse with a rated current of 200mA. It has a maximum continuous operating temperature of 125°C and a resistance of 0.08Ω at an operating temperature of 25°C. The fuse is designed to protect circuits from overcurrents up to a current rating of 8A. The SMD2920P200TSA is designed to disconnect the protected circuit in the event of an overcurrent, and can be re-armed once the overcurrent has been cleared. The device has a current-to-time recovery characteristic, meaning it will take longer to disconnect the circuit if the current level is higher.

Applications

The SMD2920P200TSA is well-suited for applications that require high-current protected circuits in a small form factor. Because of its robust design, the SMD2920P200TSA is suitable for use in automotive, industrial and communications applications. It is commonly used in automotive auxiliary power conversion circuits, battery protection and over-charge prevention circuits. The device is also suitable for general purpose protection applications where overvoltage, over-current, or short-circuit protection is required.

Working Principle

The SMD2920P200TSA consists of a PTC element and supporting logic circuitry. The PTC element acts as a resistor in normal operation, and its resistance increases when the current flowing through it exceeds its rated current. This increase in resistance limits the amount of current flowing through the PTC element, protecting the circuit from an overcurrent condition. When the current increases beyond the device\'s rating, the PTC element will quickly and automatically disconnect the protected circuit, causing the current to drop. When the overcurrent has cleared, the device can be easily reset by simply reinserting it into the circuit.

To ensure an optimal performance, it is important to observe the device\'s maximum temperature and overcurrent limits. The SMD2920P200TSA should be limited to an operating temperature of 125°C and an overcurrent limit of 8A. Exceeding these parameters can adversely affect the performance of the device and reduce its life span.

Conclusion

The SMD2920P200TSA is one of the most popular PTC Resettable Fuses on the market, owing to its miniature size, high-speed performance and ability to disconnect and reset the protected circuit. The device is suitable for a wide range of automotive, industrial and communications applications, providing reliable protection from overcurrents. By understanding its characteristics, application range and working principle, users can be sure of optimal performance and reliability from the SMD2920P200TSA.

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