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File Naming Conventions

Gerber Foil Layers *.TOP = Top or Component Side
*.BOT = Bottom or Solder Side
Gerber Mask Layers *.SST = Component Legend
*.SMT = Solder Mask
Legend and Mask layers can be unique for top and bottom causing an alteration to the file suffix.
Aperture File sample *.APP (is the most common)
RS274-X sample
RS274-D sample
Gerber should be generated in 2.4 format
NC or Excellon Drills *.TAP = Drill file
*.DTS = Tool Report - sizes are also in NC file header
NC Drill File sample 2.4 Trailing Zeros


Note: The Board Outline is often found in the DRD Gerber file.


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