MF-R250-2-99 is a radial-leaded PTC resettable fuse from Bourns' MF-R Series, engineered to provide automatic circuit protection in low-voltage power supply applications. The device features a maximum voltage rating of 30 V, a hold current (Ihold) of 2.50 A, and a trip current (Itrip) of 5.00 A at 23°C, with an initial resistance of 0.048 O and a post-trip resistance of 0.07 O maximum. The fuse exhibits a maximum time to trip of 10.3 seconds at 23°C with a typical tripped power dissipation of 1.20 W, and is constructed with flame-retardant epoxy polymer insulation meeting UL 94V-0 requirements. This device is RoHS compliant and halogen-free, making it suitable for computers, peripherals, and general electronics where reliable overcurrent protection and automatic reset capability are required.