“Printed circuit board (hereinafter referred to as PCB) design is one of the important components of surface mount technology. The quality of PCB design is an important indicator to measure the level of surface assembly technology and one of the primary conditions to ensure the quality of surface assembly.

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Printed circuit board (hereinafter referred to as PCB) design is one of the important components of surface mount technology. The quality of PCB design is an important indicator to measure the level of surface assembly technology and one of the primary conditions to ensure the quality of surface assembly.

DFM (Design for Manufacturing) is the most effective method to ensure the quality of PCB design. DFM is the design practice and process of matching a product’s engineering requirements with global manufacturing capabilities to achieve the lowest cost, highest yield, and faster time to market. DFM takes manufacturability and testability into consideration from the time of product development and design, so as to make a close connection between design and manufacturing, and achieve the purpose of one-time success from design to manufacturing. DFM has the advantages of shortening the development cycle, reducing costs, and improving product quality. It is the way for enterprise products to succeed.

The traditional method of new product development is usually completed serially at each stage of design, manufacturing and sales. The traditional design method emphasizes the design speed in the first design of the crystal production, and only pays attention to the realization of the product function. In the design stage, the manufacturing requirements cannot be fully considered. As a result, due to the unmanufacturability or poor manufacturability, in order to correct the problems in the manufacturing process, the It is necessary to go back for one or more redesigns, and re-prototype for each improvement, resulting in a longer actual development cycle for the entire product and an increase in cost.

Modern design methods emphasize more detailed design when the product is first designed, and solve the problems that may arise during the manufacturing and testing process in advance to the design stage. Although this approach takes more time in the initial design, the end result reduces the time to develop the design, while also reducing the cost. A comparison of traditional design methods and modern design methods is shown in Fig.

HP’s DFM statistical survey shows that 60% of the total product cost depends on the initial design of the product, 75% of the manufacturing cost depends on the design instructions and design specifications, and 70%-80% of production defects are caused by design reasons.

DFX related to manufacturing includes design for manufacturability, design for testability, design for analysis, design for assembly, design for environmental protection, design for PCB processability, design for logistics, and design for reliability.