Appropriate Pad Hole Size for Through-hole Lead Diameter

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Initially PCBs were designed manually by creating a photomask on a clear mylar sheet, usually at two or four times the true size. Starting from the schematic diagram the component pin pads were laid out on the mylar and then traces were routed to connect the pads. If you have many questions of PCB Design, please come here!

Community > Groups > PCB Design Rules > What pad hole size is appropriate for a given through-hole lead diameter?

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What pad hole size is appropriate for a given through-hole lead diameter?

350

Chris Bethea

When I am making some new through-hole parts in Eagle, I've realized that the drill size needs to be a little larger than the lead diameter, but I'm not sure how much larger it should be?

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2016/7/9 22:37:28

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