Most engineers are used to send a good PCB design files directly after processing circuit board factory, and is relatively popular in the international approach converts PCB file after the GERBER file and drilling data, circuit board factory, why 'redundant'?
Because electronic engineers and understanding of circuit boards, PCB engineers from PCB factory of GERBER file may not be what you want, as you will be in the design of the parameters of the components are defined in the PCB file, you don't want to let these parameters showed on the PCB products, you not, circuit board factory to all these parameters in the gourd painting gourd ladle on the PCB on the finished product.
This is just one example.
If you convert PCB file into GERBER file to avoid such events.
GERBER file is an international standard light painting format file, it includes RS -
D - and RS
X both formats, including RS -
D called basic GERBER format, and at the same time with the D code files can complete description a graphics;
X is called extension GERBER format, it itself contains a D code information.
Commonly used CAD software can generate the two format files.
factory why gerber file is required for drilling data can also be produced by a variety of CAD software, general format for Excellon;
No drilling data of course do not out of circuit board.
Gerber file suffix meaning GTL & # 8212;
The top toplayer GBL & # 8212;
Bottomlayer underlying decision & # 8212;
TopOverlay top silk screen layer GBO & # 8212;
Bottomlayer GTP & # 8212 made the bottom screen printing layer;
TopPaste top table paste (
Do laser template)
BottomPaste the underlying table stick GTS & # 8212;
Topsolder top resistance welding (
Also known as the tin/green oil, negative)
BottomSolder bottom resistance welding G1 & # 8212;
Midlayer1 running internal layer 1 G2 & # 8212;
Midayerr2 running inside the layer 2 & # 8230;
InternalPlane1 plane 1 (
InternalPlane2 plane 2 (
Mechanical layer 1 Mechanical1 GM2 & # 8212;
Layer 2 Mechanical2 machinery & # 8230;
KeepOuter ban wiring layer GG1 & # 8212;
DrillGuide guide drilling layer GD1 & # 8212;
DrillDrawing drilling layer GPT & # 8212;
ToppadMaster top-level main welding plate of GPB & # 8212;
BottompadMaster underlying primary solder Rocket PCB circuit board
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