Generic PCB Fabrication Process

The steps required to build a standard printed circuit board are numerous. I shall start by itemizing the steps. I shall then document each one in greater detail as we go. The generic fabrication steps are as follows…

  1. Data Preparation
  2. Material Allocation

  3. Inner-Layer Process

    1. Exposure

      1. Pre-Clean

      2. Dry Film Lamination

      3. Dry Film Expose

    2. DES

      1. Develop

      2. Etch

      3. Strip

    3. PEP (Post Etch Punch)

    4. AOI (Automatic Optical Inspection) Inner layers

    5. Oxide Treatment

    6. Multilayer Lamination

      1. Dry Bake

      2. Lay-up

      3. Press

      4. Trim Flash and bevel edges

  4. Outer-Layer Process

    1. Primary Drill

    2. Surface Preparation

    3. Desmear/Etch-back

      1. Plasma desmear

      2. Chemical desmear

      3. Glass etch

    4. Metallization

    5. Exposure

      1. Dry Film Lamination

      2. Dry Film Expose

      3. Dry Film Develop

    6. Pattern Plate Copper/Tin

    7. Strip Dry Film Resist

    8. Copper Etch

    9. Tin Strip

    10. AOI (Automatic Optical Inspection) Outer layers

    11. Solder Mask

      1. Ionic Contamination Testing

      2. Pre-Clean

      3. Application

      4. Tack Dry

      5. Expose

      6. Develop

      7. Cure

        1. Bake

        2. UV Bump

    12. Nomenclature

    13. Final Finish

    14. Via Cap/Plug

    15. Nickel/Gold Tab Plate

    16. Final Fabrication

      1. Secondary Drill

      2. Counter Sink/Bore

      3. Edge Milling

      4. Score

      5. Rout

      6. Chamfer/Bevel

      7. Rinse

    17. Electrical Test

    18. Quality Control

      1. Sampling Plan

      2. Ionic Contamination Testing

      3. Solder Float

      4. Micro-Section

      5. Mechanical Inspection

      6. Visual Inspection

    19. Dry Bake (optional)

    20. Package/Ship

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3 Responses to “Generic PCB Fabrication Process”

  1. tin plate Says:

    tin plate…

    That’s good that you are making such smashing knowledge just about this good topic. And we think that should be very good if people order the thesis abstract or buy dissertation from you.:)…

  2. shahabamo Says:

    “I shall start by itemizing the steps.”
    we are waiting… :)
    tank you!

  3. David Duross Says:

    Sorry for being away from the BLOG for so long. The past few months have been very busy for me. However, I’m back now. :-)

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