MF-R010-2-99 is a radial-leaded PTC resettable fuse designed for low-voltage power supply protection in electronic circuits. It features a maximum voltage rating of 60 V and maximum current rating of 40 A, with a hold current (Ihold) of 0.10 A and trip current (Itrip) of 0.20 A at 23°C. The device exhibits an initial resistance of 4.50 Ohms and a post-trip resistance of 7.50 Ohms maximum, with a maximum time to trip of 4.0 seconds at 23°C. Constructed with cured, flame-retardant epoxy polymer insulation meeting UL 94V-0 requirements and featuring Sn/NiCu lead material, this component is RoHS compliant and halogen-free. It is commonly used in computers, peripherals, and general electronics applications where reliable overcurrent and overtemperature protection is required.