Some embodiments of the present disclosure provide a semiconductor device. The semiconductor device includes: a bottom package; wherein an area of a contact surface between the conductor and the through via substantially equals a cross-sectional area of the through via, and the bottom package includes: a molding compound; a through via penetrating through the molding compound; a die molded in the molding compound; and a conductor on the through via. An associated method of manufacturing the semiconductor device is also disclosed.