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General Introduction of Gerber File

2017/2/2 18:51:44


The Gerber format is an open ASCII vector format for 2D binary images. It is the de facto standard used by printed circuit board (PCB) industry software to describe the printed circuit board images: copper layers, solder mask, legend, etc.
Gerber is used in PCB fabrication data. PCBs are designed on a specialized electronic design automation (EDA) or a computer-aided design (CAD) system. The CAD systems output PCB fabrication data to allow manufacturing. This data typically contains a Gerber file for each image layer (copper layers, solder mask, legend or silk...). During bare board fabrication Gerber is the standard input format for photoplotters and all other fabrication equipment needing image data, such as legend printers, direct imagers or automated optical inspection (AOI) machines or for viewing reference data in different departments. Gerber files also contains a 'stencil' layer for solder paste and the central locations of components to allow the PCB assembler to create the stencil and place and bond the components.
There are three major generations of Gerber format:
Gerber X2. This is the current Gerber format.
Extended Gerber, or RS-274X.
Standard Gerber, or RS-274-D. This obsolete format was revoked.
The standard file extension is .GBR or .gbr though other extensions are also used.Some abbreviations that you often see:
GTL=Top copper layer
GBL=Bottom copper layer
GTS=Top solder mask layer
GBS=Bottom solder mask layer
GTO=Top silk screen layer
GBO=Bottom silk screen layer
GTP=Top paste file (top stencil file)
GBP=Bottom paste file (bottom stencil file)
GKO=Outline layer
DRL=Drill layer
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    Miguel Angel

    2017/2/4 18:51:44

    Appreciate your sharing.Please keep up your updates.

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