Bourns MF-R900-2 is a resettable fuse, also known as a PTC (Positive Temperature Coefficient) fuse. These fuses are designed to protect circuits from overcurrent conditions by increasing their resistance when the current exceeds a specified level. Unlike traditional fuses, resettable fuses automatically return to a low-resistance state once the fault condition is removed, eliminating the need for manual replacement. The MF-R900-2 is RoHS compliant and halogen free, making it suitable for environmentally conscious applications. It finds use in computers, peripherals, and general electronics where reliable overcurrent protection is required. The device features a cured, flame retardant epoxy polymer insulating material meeting UL 94V-0 requirements, ensuring safety and durability.