The MF-R300-2 is a radial leaded PTC resettable fuse from Bourns' MF-R Series, engineered to provide automatic overcurrent protection in low-voltage power supply applications. It features a maximum voltage rating of 30 V, a hold current (Ihold) of 3.0 A, and a trip current (Itrip) of 6.0 A, with an initial resistance of 0.020 to 0.05 Ohms at 23°C. The device exhibits a 1-hour post-trip resistance of 0.08 Ohms maximum and a maximum time to trip of 15.0 seconds at 23°C, with typical tripped power dissipation of 2.00 W. Constructed with flame-retardant epoxy polymer insulation meeting UL 94V-0 requirements, the MF-R300-2 is RoHS compliant and halogen-free, making it suitable for computers, peripherals, general electronics, and automotive applications where reliable load protection is essential.