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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!

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Pad size from technical drawings
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Anders Appelgren

what would the best drill size and pad size for 0.56/0.36 and spacing for 2.80/2.40?
Statement: This post is only the personal view of the author and does not represent the opinions of


The pad diameter is 1.71MM.

Teguh Sobirin

For your question, the minimum drill size is 1.01MM.

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