What is PCB Gerber file?

The Gerber format is an open 2D binary vector image file format. It is the standard file used by printed circuit board (PCB) industry software to describe the printed circuit board images: copper layers, solder mask, legend, etc.

Gerber files should be inside a .rar or.zip archive with standard file extensions:
Extension                       Layer

  • pcbname.GTL¬†¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬†¬†Top Copper
  • pcbname.GTS¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬†Top Soldermask
  • pcbname.GTO¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬†Top Silkscreen
  • pcbname.GBL¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬†Bottom copper
  • pcbname.GBS¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬†Bottom Soldermask:
  • pcbname.GBO¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬†Bottom Silkscreen:
  • pcbname.TXT¬†¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬†Drills
  • pcbname.GML/GKO¬†¬† ¬† ¬† ¬†*Board Outline:
  • 4 layer board also need
  • pcbname.GL2¬†¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬†¬†Inner Layer2
  • pcbname.GL3¬†¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬†¬†Inner Layer3

Notes: Gerber file must be RS-274X format.  Drill file(pcbname.TXT) should be Excellon format.
PCB Outline is required.

Gerber file is used for manufacturing process.

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