RUSBF135-AP Circuit Protection

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PTC Resettable Fuses are an important and vital type of electrical component designed to protect against electrical overcurrent conditions. The RUSBF135-AP is one example of this type of fuse. This article will discuss the application field and working principle of this product.

RUSBF135-AP is a 140 A fusing element within a 6 mm x 15 mm package with SMT terminals. Its surface mount design provides a space-saving solution for overcurrent protection in today’s compact consumer electronics devices. This PTC fuse features a fast and soft acting response to electric overcurrent conditions, as well as a low reset voltage characteristics, making it suitable for use in a range of electronic circuits.

RUSBF135-AP is designed for use in applications where a fast and safe overcurrent protection solution is desired. These applications include audio/visual equipment, home/office electronics, personal communications devices, and industrial control systems. Due to its small size, it is ideal for use in applications with tight space requirements, such as cell phones and tablets. Its high current rating also makes it suitable for use in applications with higher power requirements, such as LED lighting and medical equipment.

The working principle behind the RUSBF135-AP is founded upon the properties that characterize PTC materials. These materials are designed to change from low-resistance states to higher-resistance states when a current in excess of their rated current passes through them. When this occurs, the fuse opens, effectively isolating the circuit from any further current while protecting it from damage due to overload. The fuse then cools down and its resistance drops back to a low-resistance state, allowing the circuit to function normally once again.

The RUSBF135-AP has several key advantages that make it particularly suitable for use in a range of applications. It has a fast trip time of less than 10 µs, making it suitable for high current protection applications. Its low reset voltage of 4V makes it ideal for use in lower voltage applications. It also has good temperature stability, making it suitable for use in higher temperature environments. Finally, it is cost-effective and is UL-approved, making it a reliable and safe choice for use in a range of applications.

In conclusion, the RUSBF135-AP is a reliable and cost-effective PTC Resettable Fuse suitable for use in a wide range of electrical protection applications. It is fast and soft reacting to overcurrent conditions, with a low reset voltage and temperature stability that make it suitable for use under a variety of conditions. Its surface mount design also makes it ideal for use in applications where space is at a premium.

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