In this part 3 of a multipart series on surface mount technology (SMT) the design of an SMT project board using a high-end, pc-board CAD system is presented. What is learned about about the features required to perform CAD-based SMT design applies to all CAD systems from low-end, PC-based tools to the most expensive workstations. The pad pattern is selected, trace/space widths and via sizes are
... [Show full abstract] determined and the hierarchy of CAD-based design is established.