Seeed Fusion PCB Specification – PCB DFM Part 2
Seeed Fusion PCB Specification
2.1 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:
Notes:1. Gerber file must be the RS-274x format.
- Drill file(pcbname.TXT) should be Excellon format.
- Gerber file and Drill file(pcb name.TXT) must be put in the same file.
- Board outline is must
| 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 |
| pcbname.GL2 | Inner Layer2( for ≥4 layer) |
| pcbname.GL3 | Inner Layer3( for ≥4 layer) |
2.2 PCB Specification for FR4-TG130
More Chapters:
1. Brief Introduction
3. Panelization and Bridge Design
4. Component Layout Considerations
5. PCB Hole design
6. Solder Mask Design
7. Copper Trace Design
8. Silkscreen Design
9. PCB Lamination Structure
10. PCB Dimensions Specification
11. Fiducial Mark Design
12. Surface Treatment
13. Files for Manufacture Requirements
14. Appendix
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