The standard drill bit sizes are in metric and Imperial gradations. The drill locations are also defined in the Gerber files and an NC drill file, which are then used with a NC drill machine to place holes. The drill locations and drill bit sizes are indicated in a drill table in the PCB fabrication documents. The drill holes in a PCB are placed with standard drill bit sizes after a board stackup is fabricated but before the board is plated. PCB Drill Sizes and How They Are Fabricated The right PCB design software can help ensure your next design is manufactured correctly with the right PCB drill sizes. Knowing something about the standard PCB drill sizes and how a drill hole is defined in your PCB design software will help ensure your fabrication run is successful and has high yield. Part of ensuring successful manufacturing involves placing the correct fabrication notes into your documentation, which should be pulled directly from your design data.Īn important part of PCB fabrication is placing drill holes with standard drill bit sizes in the board to provide through-hole component solder points, mounting holes, and via holes in your circuit board. Your CAD software should help you stay productive in all of your design projects, and it should help you get your designs into manufacturing. With the number of PCB design software programs and utilities out there, it can be difficult to choose the program that will work best for you. A PCB design software package that generates manufacturing and assembly instructions in industry-standard file formats.
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