The netlist produced from the schematic seize will be the input for the format design on the printed circuit board. The PCB substrate product and stack-up are made a decision in this stage. The layout design with part placement and routing is completed According to the DFM (Design for manufacturability) https://cbseschoolsfees75937.prublogger.com/27618438/electronic-product-design-and-development-fundamentals-explained