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** Check with board house manufacturer for accepted minimums and clearances **
Standards for Traces
Standards for Traces
Default Traces
MIN Trace Width: 8 mils / 0.2032 mm
MIN Trace Clearance: 6 mils / 0.1524 mm
Ground & Power Traces
MIN Trace Width: 15 mils / 0.381 mm
MIN Trace Clearance: 10 mils / 0.254 mm
USB / Clock / High Speed Traces
MIN Trace Width: 6 mils / 0.1524 mm
MIN Trace Clearance: 6 mils / 0.1524 mm
Differential Pair Width: 7 mils / 0.1778 mm
Differential Pair Gap: 7 mils / 0.1778 mm
Clock Traces
Maintain at least 50 mils distancing from other traces
Vias / Holes
Vias / Holes
Default Vias
MIN Via Size: 23 mils / 0.5842 mm
MIN Via Drill Size: 12 mils / 0.3048 mm
Clearance: 2-3 x drill size
Micro Vias
MIN Via Size: 10 mils / 0.254 mm
MIN Via Drill Size: 4 mils / 0.1016 mm
Fiducials
Fiducials
Default Setup Copper: 39.37 mils / 1 mm
Default Setup Solder Mask: 78.74 mils / 2 mm
Margin
Margin
A standard margin should be between 0.4 and 0.5 mm from the board edge.
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