A semiconductor device package includes a substrate, a first electronic component, a first package body, an electrical contact and a first conductive layer. The substrate has a first surface, a second surface and a lateral surface extending between the first surface and the second surface. The first electronic component is disposed on the first surface of the substrate. The first package body encapsulates the first electronic component. The electrical contact is disposed on the second surface of the substrate. The first conductive layer includes a first portion and a second portion. The first portion is disposed on the first package body and the lateral surface of the substrate. The second portion contacts the electrical contact.