The FSMD005-0603-R is a surface-mount resettable fuse, also known as a Polymeric Positive Temperature Coefficient (PPTC) device, manufactured by Fuzetec. It is designed to protect electronic circuits from overcurrent faults. This particular model is in a 0603 surface-mount package, making it suitable for compact and densely populated circuit boards.

Applications

• USB ports
• Mobile phones
• Digital cameras
• MP3 players
• Game consoles
• Portable devices
• General electronic circuit protection

Features

• Surface mount package (0603)
• Resettable fuse
• Fast trip time
• Low resistance
• RoHS compliant
• Compact size

Benefits

• Provides overcurrent protection
• Resets automatically after fault is removed
• Protects circuits quickly
• Minimal impact on circuit performance
• Environmentally friendly
• Saves board space

Additional Details

The FSMD005 indicates a hold current of 0.5A. The 0603 refers to the physical dimensions of the component (0.06 inch x 0.03 inch). 'R' commonly denotes tape and reel packaging. When an overcurrent condition occurs, the PPTC device heats up and its resistance increases significantly, limiting the current flow and protecting the circuit. Once the fault is cleared and power is removed, the device cools down and its resistance returns to a low level, allowing the circuit to resume normal operation. It meets industry standards for safety and performance. It typically has a maximum voltage rating that should not be exceeded.