Found 5 alternatives for 0203.500H by Littelfuse Inc.. Fuses — 2-DIP (0.400", 10.16mm).
FUSE BOARD MOUNT 5A 250VAC 2DIP
FUSE BOARD MOUNT 3A 250VAC 2DIP
FUSE BOARD MOUNT 2A 250VAC 2DIP
FUSE BOARD MOUNT 4A 250VAC 2DIP