Closed ForrestErickson closed 2 months ago
Question left with JLCPCB on line help on 20240529
Hello Regarding my setup for PCB design drills... I would think that sized that are some "standard" drill would be the best to choose but I have no informed idea what those sizes may be. Would the be number drill sizes? Increments of some metric dimension to which I living in the USA have never had exposure? Even some increment of mills? Read FYI I hope to share some list of prefered hole sizes (Drill sizes) with fellow designers of PCBs on the KiCAD Facebook group I frequent and where I asked this question.
This linked in thread has some information on PCB hole sizes: https://www.linkedin.com/pulse/what-production-hole-diameter-pcb-rayming-techonloy-0vl5c/ There is a chart there: https://media.licdn.com/dms/image/D5612AQHkzJ1s9hjzHQ/article-inline_image-shrink_1000_1488/0/1699238149589?e=1722470400&v=beta&t=GxRSd8Mz3mJPI1Iur5hHvuaNLWC-nTDxOFG2-RS0GaU
A summary:
Some of the most common hole diameter sizes from these standards: 0.8 mm - Used for many axial leaded components like resistors and ceramics. Also a popular via size. 1.0 mm - Larger axial leaded components, wire-to-board connectors, IC sockets. 1.27 mm (0.050 inches) - Widely used for ICs, interconnects, and mounting holes. 1.5 mm to 3.2 mm - For larger through-hole components like electrolytic capacitors, fuses, and TO-220 transistors. 0.9 mm to 1.5 mm - Common via sizes in multilayer boards.
Another reference but with far too many to help:
https://www.kyoceraprecisiontools.com/pcb/pdf/PCB_Diameter_Chart.pdf
Lee left the following question on the FaceBook KiCad page.
https://www.facebook.com/groups/861083273995933/user/100001157659918