{"id":3411,"date":"2023-11-27T20:36:09","date_gmt":"2023-11-27T12:36:09","guid":{"rendered":"https:\/\/www.jingpengpcb.com\/?p=3411"},"modified":"2026-10-02T19:43:33","modified_gmt":"2026-10-02T11:43:33","slug":"double-sided-pcb-and-pcba-process","status":"publish","type":"post","link":"https:\/\/www.jingpengpcb.com\/en\/blog\/double-sided-pcb-and-pcba-process\/","title":{"rendered":"Introduction to Double-Sided PCB Manufacturing and PCBA Processes"},"content":{"rendered":"

Given the growing demand for high-performance products today, traditional single-layer PCBs can no longer meet market requirements. This is why double-sided PCBs and related PCBA manufacturing and assembly services are currently in high demand.<\/p>\n

These circuit boards feature double-sided routing and are typically made of copper-clad laminate with an epoxy-glass fabric base. They are widely used in telecommunications equipment, high-end instruments, high-performance computers, and other fields.<\/p>\n

\"Double-sided<\/p>\n

Typical Process for Manufacturing Double-Sided Plated-Through Printed Circuit Boards<\/h2>\n

Manufacturing double-sided PCBs is a complex engineering process that typically involves multiple steps. The following is a typical manufacturing process for double-sided PCBs:<\/p>\n

Making the First Sheet<\/h3>\n
    \n
  1. Cutting Double-Sided Copper-Clad Laminate<\/strong>: First, the double-sided copper-clad laminate is cut to the required dimensions.<\/li>\n
  2. CNC Drilling Inspection and Deburring<\/strong>: Drill holes in the board, then inspect it and remove any burrs.<\/li>\n
  3. Electrolytic Plating Using Brushes (Through-Hole Metallization)<\/strong>: Using an electrochemical process, metal is deposited through the through-holes on the circuit board to establish conductivity.<\/li>\n
  4. Electroplating on Thin Copper Full Plates<\/strong>: A thin layer of copper is applied to the circuit board to enhance electrical conductivity.<\/li>\n
  5. Inspection and Cleaning of Screen-Printed Anode Circuit Patterns<\/strong>: The negative circuit pattern is printed onto the circuit board using screen printing technology, followed by inspection and cleaning.<\/li>\n
  6. Curing<\/strong>: Heat-cure the design to ensure its stability.<\/li>\n<\/ol>\n

    Making the Second Side<\/h3>\n
      \n
    1. Electrolytic Tin Plating (Corrosion-Resistant Nickel\/Gold)<\/strong>: Tin is applied to the circuit pattern on the other side to improve the performance of the circuit board.<\/li>\n
    2. Etched Copper<\/strong>: The uncovered copper is removed through an etching process to form the circuit.<\/li>\n
    3. Cleaning<\/strong>: Clean the circuit board to remove any residual material.<\/li>\n
    4. Thermosetting Green Solder Paste Screen Printing<\/strong>: The circuit board is coated using a thermosetting green solder mask screen-printing process.<\/li>\n
    5. Printing Solder Mask Patterns<\/strong>: Print a solder mask pattern on the desired areas to provide insulation and protection.<\/li>\n
    6. Curing and Oil Records: Curing<\/strong>: Heat curing ensures that the design is set.<\/li>\n<\/ol>\n

      Completed Process<\/h3>\n
        \n
      1. Tin Plating or Organic Solder Mask<\/strong>: Apply a layer of tin or organic solder mask to the circuit board to further protect the circuitry.<\/li>\n
      2. Shaping, Cleaning, Drying<\/strong>: The final processing step for circuit boards to ensure quality.<\/li>\n
      3. Power Switch Testing<\/strong>: Test the performance and functionality of the circuit board.<\/li>\n
      4. Packaging Inspection, Shipment of Finished Products<\/strong>: Once all tests and inspections have been completed, the circuit board is ready to be delivered to the customer.<\/li>\n<\/ol>\n

        PCBA Manufacturing and Assembly<\/h2>\n

        1. Preparing Materials and Tools<\/h3>\n

        Before proceeding with PCBA manufacturing and assembly, you need to prepare the following materials, equipment, and tools:<\/p>\n

          \n
        • A DC regulated power supply and a multimeter.<\/li>\n
        • A circuit board ready for assembly.<\/li>\n
        • Kits and lists of enclosures for products to be assembled, as well as related machine parts.<\/li>\n
        • Electric screwdrivers, rags, and electronic tags.<\/li>\n<\/ul>\n

          2. Pre-assembly Inspection<\/h3>\n

          Before beginning assembly, perform a thorough inspection:<\/p>\n

            \n
          • Carefully check the assembly list and the circuit boards.<\/li>\n
          • Inspect the product housing.<\/li>\n
          • Inspect the product kit's case for defects and damage.<\/li>\n
          • Visually inspect the printed circuit board to ensure it is intact, that the solder coating on the surface is intact, and that there are no obvious short circuits or short-circuit defects. Use a multimeter to check for short circuits between the power supply and ground on the printed circuit board.<\/li>\n<\/ul>\n

            3. Final Assembly and Shipping<\/h3>\n

            After completing the above inspections, proceed with final assembly and shipment:<\/p>\n

              \n
            • Align the printed circuit board and place it inside the enclosure. Make sure the mounting holes are aligned, and be careful not to let components such as potentiometers come into contact with the enclosure.<\/li>\n
            • Install the screws that secure the printed circuit board, place the housing on top, and tighten the assembly screws.<\/li>\n
            • Inspect the exterior for damage and other cosmetic defects.<\/li>\n
            • Apply the product label.<\/li>\n
            • Conduct follow-up tests, such as aging tests.<\/li>\n<\/ul>\n

              Double-sided PCB fabrication and related PCBA assembly are critical steps in the manufacturing of modern electronic devices. The precise execution of these processes ensures that electronic products deliver high performance and reliability.<\/p>\n

              If you have any further questions about PCBA or double-sided PCBs, please feel free to visit our website. We also offer a wide variety of circuit boards, including high-frequency boards and SMT boards. We look forward to seeing you again.<\/p>","protected":false},"excerpt":{"rendered":"

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