13. PTC Fuse for USB Port Protection

Aarav is designing a USB host board that provides 5V power to external USB devices. 

Each USB port can supply up to 500mA to the connected device. 

To protect against overcurrent from a shorted or faulty USB device, he needs an SMD PTC resettable fuse on each port's 5V output line. 

The fuse should hold above normal operating current with a margin for thermal derating, and trip on overcurrent, then reset automatically when the fault is removed. 

He wants a 1210 SMD package. The company's AVL specifies Littelfuse, so the part must be selected from Littelfuse on DigiKey.  

Help him select a suitable PTC resettable fuse from Littelfuse on DigiKey.