The SMD 1812 series resettable fuses, in a rugged 1812 surface mount package, provide excellent overcurrent protection for various circuits from 6V to 60Vdc.
This product utilizes the inherent properties of PTC (positive temperature coefficient) materials to quickly increase resistance when abnormal overcurrent is detected, effectively cutting off the current and protecting downstream components from damage. Once the fault is eliminated, its resistance automatically returns to its initial low resistance state without the need for manual intervention or replacement.
With its wide voltage range, automatic recovery function, and reliability under high current shocks, the SMD 1812 series is an ideal choice for high-power or critical applications such as industrial equipment, automotive electronics, power systems, communication infrastructure, and LED drivers, significantly improving the overall safety and long-term operational stability of the product.