A semiconductor device may include a semiconductor substrate, a first bonding pad provided on an upper surface of the semiconductor substrate and constituted of a metal including aluminum, a second bonding pad provided on the upper surface of the semiconductor substrate, and a first protrusion protruding from an upper surface of the first bonding pad. The first protrusion may be provided on the upper surface of the first bonding pad only at a position adjacent to a peripheral edge of the first bonding pad, the peripheral edge of the first bonding pad may be opposed to the second bonding pad.