The SMD0603-050 is a surface-mount resettable fuse (PPTC) manufactured by TECHFUSE. This device is designed to protect electronic circuits from overcurrent conditions. It operates by increasing its resistance significantly when an overcurrent event occurs, limiting the current flow and protecting downstream components. Once the fault condition is removed, the fuse automatically resets to its low-resistance state.

Applications

• USB port protection
• Portable electronic devices
• Battery protection
• Automotive electronics
• Industrial control systems

Features

• Hold current of 0.5A
• Voltage rating of 6V
• Surface-mount package (0603 size)
• Resettable functionality
• Fast trip time

Benefits

• Protection against overcurrent faults
• Automatic reset after fault removal
• Reduced board space requirements due to small size
• Improved system reliability
• Elimination of fuse replacement costs

Additional Details

The SMD0603-050 has a trip current of typically 1A. The device’s operating temperature range is typically from -40°C to +85°C. The PPTC technology provides a fast response to overcurrent conditions, protecting sensitive components. The 0603 package size is industry-standard for small surface-mount components. The device is designed for automated assembly using pick-and-place equipment. It offers excellent reliability and long-term stability, ensuring consistent performance in demanding applications. The resettable fuse eliminates the need for manual fuse replacement, reducing maintenance costs. The device is suitable for use in high-density circuit boards. It provides robust protection against both short-circuit and overload conditions. The PPTC material exhibits a positive temperature coefficient, meaning its resistance increases with temperature.