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Generate Fabrication File Gerber

When you finish your PCB, you can output the Fabrication Files(gerber file) via: File > Generate PCB Fabrication File(Gerber) , or Fabrication > PCB Fabrication File(Gerber).

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After clicking, will open the Gerber generate dialog:

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You can calculate the price for the PCB order, click SAVE to CART will go to JLCPCB and add your PCB in the cart.

Gerber file name

The generated Gerber file is a compressed zip file. After decompression, you can see the following files:

File Name Type Remarks/Description
Gerber_BoardOutline.GKO Outline file The PCB board factory cuts the board shape according to this file. The slots and solid-filled non-copper-plated through holes drawn by Jialichuang EDA are reflected in the border file after Gerber is generated.
Gerber_TopLayer.GTL PCB Top Layer Top Copper Foil Layer
Gerber_BottomLayer.GBL PCB bottom layer Bottom copper foil layer
Gerber_InnerLayer1.G1 Inner copper foil layer, signal layer type.
Gerber_InnerLayer2.GP2 Inner copper foil layer, inner electrical layer type
Gerber_TopSilkLayer.GTO Top silkscreen layer
Gerber_BottomSilkLayer.GBO* Bottom silkscreen layer
Gerber_TopSolderMaskLayer.GTS Top Solder Mask Layer It can also be called the window opening layer. By default, the board is covered with oil, and the elements drawn on this layer correspond to the area of the top layer, which is not covered with oil
Gerber_BottomSolderMaskLayer.GBS Bottom Solder Mask It can also be called the window layer. The board is covered with oil by default, and the elements drawn on this layer correspond to the area of the bottom layer without oil
Drill_PTH_Through.DRL metallization drilling layer This file shows the drill hole position that needs metallization on the inner wall, such as multi-layer pads, vias
Drill_PTH_Through_Via.DRL via metallization drilling layer This file shows the drill hole position that needs metallization on the inner wall, this file for JLCPCB use
Drill_NPTH_Through.DRL Non-metallized drilling layer This file shows the drill hole position that does not need metallization on the inner wall, such as through holes
Gerber_TopPasteMaskLayer.GTP Top layer flux layer For stencil opening
Gerber_BottomPasteMaskLayer.GBP Bottom layer of soldering flux For stencil opening
Gerber_TopAssemblyLayer.GTA Top Assembly Layer Only for reading, does not affect PCB manufacturing. Former name: ReadOnly.TopAssembly
Gerber_BottomAssemblyLayer.GBA Bottom assembly layer Only for reading, does not affect PCB manufacturing. Former name: ReadOnly.BottomAssembly
Gerber_MechanicalLayer.GME Mechanical Layer Only for reading, does not affect PCB manufacturing by default. Former name: ReadOnly.Mechanical. The information recorded in the mechanical layer in the PCB design is only for information recording. For example: process parameters, V-cut path, etc.
Gerber_DocumentLayer.GDL Document Layer Used to record PCB remarks, not involved in manufacturing

Notice:

  • Before ordering the PCB, please check the gerber at the Gerber view as below.
  • The Gerber files are generated by browser, please use the browser inner downloader to download!
  • The coordinates of the Gerber file follow the canvas coordinates
  • When exporting Gerber, the drill file coordinate format accuracy defaults to 3:3. When the PCB size is out of range, it automatically uses 4:2 format. If you view the Gerber as such as CAM350, found that the Drill hole has been offset the location, you can modify the drill coordinate format to fit the location

Gerber View

Before sending Gerber to the factory, please use gerber viewer to check the Gerber carefully.

local gerber viewer you can use such as: Gerbv, FlatCAM, CAM350, ViewMate, GerberLogix etc.

Gerber viewer recommend Gerbv:

How to use Gerbv:

1.Download Gerber zip file, and download Gerbv, unzip Gerber file and run the Gerbv;

2.Click the + button at the Gerbv dialog bottom-left corner, open the gerber folder, select all the gerber files, and open.

3.And then zoom, measure, check every layer, check drill holes and location. etc.

FlatCAM is a nice tool too: http://flatcam.org/

FlatCAM lets you take your designs to a CNC router. You can open Gerber, Excellon or G-code, edit it or create from scatch, and output G-Code. Isolation routing is one of many tasks that FlatCAM is perfect for. It’s is open source, written in Python and runs smoothly on most platforms.

Free Online Gerber Viewer:

Recommend:
jlcpcb.com
tracespace.io/view
gerber.ucamco.com


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