MF-PSMF020X-2 is a PTC resettable fuse from Bourns' MF-PSMF series, engineered for compact overcurrent protection in 0805 surface mount form factor. The device features a maximum voltage rating of 9 V, maximum current of 40 A, and a hold current of 0.20 A with a trip current of 0.50 A, providing reliable protection against fault events with fast response times. It exhibits a minimum resistance of 0.65 O at 23°C and a maximum time to trip of 0.02 seconds at specified current, ensuring rapid fault isolation. The component is RoHS compliant, halogen-free, and carries cUL and TÜV agency recognition, making it suitable for USB 2.0/3.0 port protection, HDMI source protection, PC motherboards, mobile phones, and gaming console applications where space-saving and reliable resettable protection are essential.