The RGEF300-2 HF is a resettable fuse, also known as a Polymeric Positive Temperature Coefficient (PPTC) device, manufactured by Tyco Electronics (now TE Connectivity). It's designed to protect electronic circuits from overcurrent conditions by limiting the flow of current during a fault and automatically resetting once the fault is cleared.

Applications:

• USB ports: Protects USB ports from overcurrent conditions caused by faulty devices or excessive current draw.
• Computer peripherals: Safeguards peripherals like printers, scanners, and external hard drives from damage due to overcurrent.
• Power supplies: Provides overcurrent protection for power supplies in various electronic devices.
• Automotive electronics: Used in automotive systems to protect sensitive electronic components from electrical surges and overloads.
• Battery packs: Protects lithium-ion and other battery packs from overcurrent and short-circuit conditions.

Features:

• Resettable: Automatically resets after the overcurrent condition is removed, eliminating the need for manual replacement.
• Solid-state: Offers reliable performance and long lifespan compared to traditional fuses.
• Fast trip time: Responds quickly to overcurrent events, minimizing damage to protected circuits.
• Low resistance: Minimizes voltage drop during normal operation.
• Compact size: Allows for easy integration into space-constrained applications.

Benefits:

• Enhanced circuit protection: Provides reliable overcurrent protection, preventing damage to electronic components.
• Reduced downtime: Automatic resetting minimizes downtime and eliminates the need for fuse replacement.
• Improved product reliability: Extends the lifespan of electronic devices by protecting them from overcurrent damage.
• Lower maintenance costs: Eliminates the cost of replacing traditional fuses.
• Safer operation: Helps prevent electrical fires and other hazards caused by overcurrent conditions.

Technical Specifications:

The RGEF300-2 HF has a hold current of 3.0A and a trip current of 6.0A. The maximum voltage is 16V. The RGEF series indicates a radial leaded form factor. It is designed for through-hole mounting. The operating temperature range is typically -40°C to +85°C. Agency approvals include UL, CSA and TUV.