The RUILON SMD1812 Series Positive Thermal Coefficient (PTC) resettable fuses are high-performance overcurrent protection devices designed for reliable circuit safety in compact electronic systems. They automatically increase resistance during fault conditions, limiting current flow and protecting sensitive components from damage caused by short circuits or overloads.

Engineered in a compact 1812 SMD package, this series delivers stable trip performance, fast response to overcurrent events, and automatic recovery once the fault is removed. It is ideal for modern high-density PCB designs requiring self-resetting protection.

🔹 Key Features

• Resettable overcurrent protection (PTC effect)
• Fast response to fault conditions
• Compact 1812 SMD package for space-saving design
• Stable trip current performance
• Automatic recovery after fault removal
• High reliability and long service life
• Suitable for repeated surge protection

🔹 Applications

• USB and Type-C power protection
• Battery management systems (BMS)
• Consumer electronics circuits
• Communication devices and modules
• Industrial control electronics
• Automotive electronic systems
• PCB-level overcurrent protection