According to the requirements of SMT, make positioning holes, sight eyes, reference points, etc. Use the PLACE TRACK command to draw the appearance of the PCB on the MECHANICAL LAYER layer.ī. The shape and size of the PCB are determined according to the position of the designed PCB in the product, the size of the space, the shape and the cooperation with other components. After the schematic design is completed, a netlist can be formed for use in PCB design.Ī. Then, just call the required components from the component library and connect them according to the designed circuit diagram.ģ. In order to realize the network connection, the components used must exist in the component library during the principle design, otherwise, the required components should be made in SCHLIB and stored in the library file. As Protel99 SE adopts the project (PROJECT) database mode management, which is implicit under Windows, so you should first create a database file to manage the designed circuit schematic and PCB layout.Ģ. Since the use of Protel99 SE software is different from Protel 98 and other software, firstly, we will briefly discuss the process of PCB design using Protel99 SE software.ġ.
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