According to one embodiment, a semiconductor storage device is provided with a memory chip including a storage circuit, a controller chip that controls a memory chip, and a substrate having a first surface and a second surface opposing one another, on the first surface of which the controller chip is mounted. Further, the semiconductor storage device is provided with an external connection terminal formed on the second surface of the substrate, and resin that encapsulates the memory chip, the controller chip, and the substrate, includes a third surface and a fourth surface opposing one another, and has a predetermined mark directly printed only on the fourth surface that is adjacent to the second surface of the substrate.