A semiconductor apparatus comprising: a rectangular plate-like body including a major surface, the body including a first long side, a second long side parallel to the first long side, a first short side, a second short side parallel to the first short side; a plurality of light emitting portions formed in the major surface, and aligned in a straight line; and a first terraced portion, a second terraced portion (146b,), a third terraced portion and a fourth terraced portion which are formed in the major surface except areas in which the plurality of light emitting portions are formed, the areas including a first longitudinal end portion of the body and a second longitudinal end portion opposite to the first longitudinal end portion of the body, wherein the first terraced portion is formed in the first longitudinal end portion and extends to the first short side and to the first long side, wherein the second terraced portion is formed in the second longitudinal end portion and extends to the second short side and to the first long side, wherein the third terraced portion is formed in the first longitudinal end portion beside the first terraced portion and extends to the first short side and to the second long side, defining a first peninsula-shaped portion extending to the first short side between the third terraced portion and the first terraced portion, wherein the fourth terraced portion is formed in the second longitudinal end portion beside the second terraced portion and extends to the second short side and to the second long side, defining a second peninsula-shaped portion extending to the second short side between the fourth terraced portion and the second terraced portion, and wherein the light emitting portions aligned in the straight line include an endmost light emitting portion, the endmost light emitting portion being positioned on the peninsula-shaped portion. a rectangular plate-like body including a major surface, the body including a first long side, a second long side parallel to the first long side, a first short side, a second short side parallel to the first short side; a plurality of light emitting portions formed in the major surface, and aligned in a straight line; and a first terraced portion, a second terraced portion (146b,), a third terraced portion and a fourth terraced portion which are formed in the major surface except areas in which the plurality of light emitting portions are formed, the areas including a first longitudinal end portion of the body and a second longitudinal end portion opposite to the first longitudinal end portion of the body, wherein the first terraced portion is formed in the first longitudinal end portion and extends to the first short side and to the first long side, wherein the second terraced portion is formed in the second longitudinal end portion and extends to the second short side and to the first long side, wherein the third terraced portion is formed in the first longitudinal end portion beside the first terraced portion and extends to the first short side and to the second long side, defining a first peninsula-shaped portion extending to the first short side between the third terraced portion and the first terraced portion, wherein the fourth terraced portion is formed in the second longitudinal end portion beside the second terraced portion and extends to the second short side and to the second long side, defining a second peninsula-shaped portion extending to the second short side between the fourth terraced portion and the second terraced portion, and wherein the light emitting portions aligned in the straight line include an endmost light emitting portion, the endmost light emitting portion being positioned on the peninsula-shaped portion.