Manufacturing method of power module

A manufacturing method of a power module, comprising steps of:

• (a) providing a substrate panel, wherein the substrate panel comprise a plurality of substrates and the plurality of substrates are arranged in an array, wherein each substrate comprises a first side, a second side and a conductive wire, and the first side and the second side are opposite to each other, wherein the plurality of substrates comprises a first substrate and a second substrate;
• (b) providing at least one leading unit and a plurality of power devices disposed on the substrate panel, wherein the plurality of power devices are disposed on and corresponding to the plurality of substrates, and each power device is electrically connected with the conductive wire of the corresponding substrate, wherein the at least one leading unit comprises at least two of a first leading component and a second leading component connected adjacent to each other, and the first leading component and the second leading component both comprise a first horizontal portion and a vertical portion, wherein the first horizontal portions of the first leading component and the second leading component are electrically connected to the conductive wires of the adjacent two of the first substrate and the second substrate through the corresponding vertical portions, respectively;
• (c) forming a molding layer disposed on the substrate panel to cover at least portion of the first leading component and at least portion of the second leading component;
• and
• (d) separating the substrate panel, the at least one leading unit and the molding layer, wherein the molding layer is separated into a plurality of molding components, and the first leading component and the second leading component are separated.