MF-R020 is a radial-leaded PTC resettable fuse designed for low-voltage power supply protection in consumer electronics and computing applications. It features a maximum voltage rating of 60 V and maximum current rating of 40 A, with a hold current (Ihold) of 0.20 A and trip current (Itrip) of 0.40 A at 23°C. The device exhibits an initial resistance of 2.84 O and a post-trip resistance of 4.40 O (maximum at 23°C), with a maximum time to trip of 2.2 seconds and typical tripped power dissipation of 0.40 W. The component is constructed with cured, flame-retardant epoxy polymer insulation meeting UL 94V-0 requirements, and features Sn/CuFe lead material with radial lead spacing of 5.08 mm. This device is ideal for protecting circuits in computers, peripherals, and general electronics where automatic reset capability and low-voltage protection are required.