PFLT.260

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PTC Resettable Fuses are widely used in a variety of industries, from automotive to consumer electronics. The PFLT.260 is a popular type of PTC resettable fuse, which provides reliable over-current protection for a wide range of applications. This article aims to provide an overview of the PFLT.260 and its application field and working principle.

Overview of PFLT.260

The PFLT.260 is a polymeric positive temperature coefficient (PPTC) resettable fuse, designed to survive over-current events. It is rated for up to 5A at 85°C and fully compliant with a variety of UL, CSA, TUV, and RoHS requirements. The fuse features an extremely low resistance even at high temperatures, which allows it to provide reliable protection from electrical surges and current overload. The PFLT.260 also has a wide operating temperature range, from -40°C to 125°C, making it suitable for a variety of applications.

Application Field

The PFLT.260 is designed for high-current applications due to its superior over-current protection capabilities. Due to its rating and low resistance, the PFLT.260 can be used in many areas, such as:

• Automotive: The PFLT.260 is commonly used to protect automobile electronics from potential damage due to electrical surges. It can also be used to protect audio and video components in cars.
• Consumer Electronics: The PFLT.260 is widely used in consumer electronics, such as laptops, tablets, and smartphones. It can provide protection against electrical surges, overloading and other power issues.
• Industrial: The PFLT.260 is suitable for industrial applications, such as machinery, computers, and control systems.
• Household Appliances: The PFLT.260 can be used to protect household appliances, such as microwaves, toasters, and vacuums, from potential damage due to current overload.
• Other applications: The PFLT.260 can also be used in LED lights, medical and aviation equipment, and other high-current applications.

Working Principle

The core part of PFLT.260 is composed of a polymeric positive temperature coefficient (PPTC) device. The PPTC device is made of polymer material which exhibits a significant increase in resistance as temperature rises. When the PPTC device is subjected to a predetermined fault current the PFLT.260 will activate. This exposes the device to an increased temperature which causes the resistance to increase further, thereby limiting the flow of current.

Once the fault current is cleared, the PFLT.260 will slowly reset and restore itself to its original low resistance state, thus allowing current to flow normally again without the need for manual resetting. This resetting action protects against damage to the protected circuit by rapidly eliminating high current during an over-current event.

Conclusion

The PFLT.260 is a popular type of PTC resettable fuse, which features an extremely low resistance even at high temperatures and is suitable for many high-current applications. It is rated for up to 5A at 85°C and is fully compliant with a variety of UL, CSA, TUV, and RoHS requirements. The PFLT.260 uses a PPTC device to protect against over-current events, and its resetting action eliminates high current rapidly upon fault without the need for manual resetting.

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