A semiconductor device package includes a lead frame, an electronic component, a package body, at least one conductive via and a conductive layer. The lead frame includes a paddle, a connection element and a plurality of leads. The electronic component is disposed on the paddle. The package body encapsulates the electronic component and the lead frame. The at least one conductive via is disposed in the package body, electrically connected to the connection element, and exposed from the package body. The conductive layer is disposed on the package body and the conductive via.