RXEF020S-2

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PTC resettable fuses are an ideal choice for a wide variety of applications due to their ability to reset after a fault is detected. The RXEF020S-2 is an example of a PTC resettable fuse that offers a variety of features that make it suitable for different applications. This article will discuss the various application fields and working principle of the RXEF020S-2.

Applications of the RXEF020S-2 PTC Resettable Fuse

The RXEF020S-2 is a current-limiting PTC resettable fuse that is commonly used for over-current protection in automotive, industrial and consumer applications. It is capable of withstanding temperatures up to 125°C, making it suitable for use in high-temperature environments such as engine compartments. Additionally, it has a high current-carrying capacity and can safely handle up to 70 amps of current. This makes it an ideal choice for applications where high currents are expected, such as electric motors, welding equipment, and solenoids. It is also a suitable choice for low-voltage and battery protection since it is able to accurately detect low-level current faults and react quickly to any over-current event.

The RXEF020S-2 is also used in low-impedance applications. Most PTC fuses feature high-impedance characteristics, which makes them less suitable for applications that require a low-impedance connection. In contrast, the RXEF020S-2 has a low-impedance characteristic, making it more appropriate for applications where lower impedance is desired. Finally, the RXEF020S-2 is suitable for use in portable electronics applications, such as cell phones and tablets. It is capable of detecting a wide range of over-current events while providing quick and accurate overload protection.

Working Principle of the RXEF020S-2 PTC Resettable Fuse

The RXEF020S-2 is an intelligent current-limiting PTC resettable fuse that operates using a two-stage protection algorithm. In the first stage, the PTC element is designed to detect and react to transient over-current events. When an over-current is detected, the PTC element rapidly increases its resistance and limits the current to a safe level. In the second stage, the PTC element is designed to detect and react to sustained over-current events. When a sustained over-current is detected, the PTC element increases its resistance to a higher level, limiting the current for an extended period of time until the fault is corrected. This two-stage protection algorithm allows the RXEF020S-2 to quickly detect and react to both transient and sustained over-currents, thus providing maximum protection for the device or system it is connected to.

The RXEF020S-2 is also designed with an automatic reset feature. When an over-current event is detected, the PTC element increases its resistance to limit the current. Once the fault is corrected and the current returns to normal, the PTC element automatically resets itself, allowing the device or system to resume normal operation. This feature eliminates the need for manual resetting and allows the RXEF020S-2 to provide continuous protection without the need for user intervention.

The RXEF020S-2 also has a variety of features that make it suitable for many applications. It has a wide operating temperature range, making it suitable for use in a variety of environments. Additionally, it has an ultrasonic welding seal that prevents the PTC element from being replaced, making it tampering-proof. Finally, it is RoHS compliant, making it an environmentally friendly choice.

Conclusion

The RXEF020S-2 is a PTC resettable fuse that offers a variety of features that make it suitable for different applications. It is capable of easily detecting transient and sustained over-currents, and rapidly limiting the current to a safe level. Additionally, it has an automatic reset feature that enables it to reset itself after an over-current event. The RXEF020S-2 is suitable for use in a variety of applications, such as automotive, industrial, and consumer applications, due to its wide operating temperature range, high current-carrying capacity, and low-impedance characteristics. Finally, its RoHS compliance makes it an environmentally friendly choice.

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