MF-USML300-2 is a low-ohmic PTC resettable fuse designed for automated surface mount assembly in compact mobile applications. This device features a 1210 footprint with ultra-low resistance of 0.0040 Ohms at 23°C, a maximum voltage rating of 6V, and a maximum current rating of 50A. The hold current is 3.00A with a trip current of 6.00A, providing reliable overcurrent protection with a maximum time to trip of 8.00 seconds at 23°C. The fuse is RoHS compliant and halogen-free, with agency recognition (cUS), making it suitable for consumer electronics, power distribution circuits, and portable devices requiring space-efficient protection. Its low profile and small footprint enable integration into densely populated circuit boards while maintaining consistent performance across the operating temperature range of -40°C to +85°C.