The RF1348-000 is a resettable fuse (PPTC) manufactured by Littelfuse Inc., designed to provide overcurrent protection for electronic circuits. This device utilizes Polymeric Positive Temperature Coefficient (PPTC) technology, meaning its resistance increases dramatically when subjected to an overcurrent condition, effectively limiting the current and protecting downstream components. Once the overcurrent condition is removed and power is cycled, the device cools down and resets to its low-resistance state, allowing normal circuit operation to resume.

Applications:

• USB Power Delivery (PD) circuits
• Power adapters
• Battery chargers
• Portable electronic devices
• General circuit protection against overcurrent faults

Features:

• Resettable functionality, eliminating the need for fuse replacement
• Compact surface mount package for space-constrained applications
• Low resistance during normal operation to minimize voltage drop
• Fast trip time for quick response to overcurrent events
• Compliant with industry safety standards such as RoHS

Benefits:

• Provides reliable and repeatable overcurrent protection
• Reduces downtime and maintenance costs associated with fuse replacement
• Enhances the safety and reliability of electronic products
• Allows for automatic recovery after fault conditions are cleared
• Meets regulatory requirements for environmental protection

Additional Details:

The RF1348-000 features a hold current (Ihold) of 1.35A and a trip current (Itrip) of 2.7A. It has a maximum voltage rating of 16V. The typical resistance is around 0.035 Ohms. The operating temperature range spans from -40°C to +85°C. PPTC resettable fuses like the RF1348-000 are widely used in a variety of applications due to their self-resetting capability and reliable performance. They are particularly suited for protecting sensitive electronic components from damage caused by transient overcurrent events. The device’s compact size and robust design make it a versatile solution for circuit protection needs in modern electronic systems.