Light emitting device, and package array for light emitting device

A light emitting device, comprising:

• a package constituted by a molded article and first and second leads, the first and second leads being each embedded in the molded article, the package formed in a substantially cuboid shape;
• and
• a light emitting element installed in the package,
• the first lead has a first terminal component, the first terminal component exposed from the molded article at a boundary between a first side face, a bottom face, and a rear face of the package, the rear face being opposite to a light emission face contiguous with the bottom face,
• the second lead has a second terminal component, the second terminal component exposed from the molded article at a boundary between a second side face, the bottom face, and the rear face, the second side face being opposite to the first side face,
• the first terminal component having a first terminal concavity, the first terminal concavity continuously opening on the first side face, the bottom face, and the rear face, and
• the second terminal component having a second terminal concavity, the second terminal concavity continuously opening on the second side face, the bottom face, and the rear face.