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PCB Design Rules

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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 > The space between a pcb's edge and traces and holes, how much should it be?
The space between a pcb's edge and traces and holes, how much should it be?
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Lebrun Bernard

A PCB is designed for use with an Arduino mega. I want to know if there is a good rule for how much space I should leave between the edge of the pcb and various items, such as traces, surface mounts etc. The space around everything is 0.1" except of a through hole for a DC jack, which comes 0.05" from the edge. Can I remove some of this space without hurting my design?
Statement: This post is only the personal view of the author and does not represent the opinions of


In a DRC file,it is ususlly specified the minimum clearances and other parameters, and used to verify the layout meets these rules before Gerbers are generated.


In your case, you are safe with a 20mil clearance.

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