A semiconductor device in which a power element and a control element for controlling the power element are packaged, and which has an excellent assembly workability and a reduced assembling cost. A lead frame (10) before the power element (PD) and the control element (CD) are mounted is shown. The region where gold wires (W2) are arranged and the region where the power element (PD) is mounted are a silver-plated region (A). The region where aluminum wires (W1) are arranged is a nickel-plated region (B). A die pad (1A) for the power element is connected with a tie bar (5) and a frame (6) by suspension leads (40 to 45) and is supported in three directions. Intermediate leads (3A to 3D) are formed in the vicinity of the control element (CD).
