Fusion PCB Specification

Seeed Fusion Service offers one-stop prototyping service for PCB(printed circuit board) service, PCBA (PCB Assembly) service and other electronic and mechanical customized service (like CNC milling,3D printing, PCB layout service)

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1. PCB Gerber

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
  • pcbname.GL2                   Inner Layer2( for ≥4 layer)
  • pcbname.GL3                   Inner Layer3( for ≥4 layer)


Notes:1. Gerber file must be the RS-274x format.  
         2. Drill file(pcbname.TXT) should be Excellon format.

         3. Gerber file and Drill file(pcb name.TXT) must be put in the same file.  
         4. Board outline is must


2. PCB Specification for FR4-TG130

Items

DescriptionSpecs
Unit: mm
Board Dimension Min size

10mm*10mm
Tip: If your board width is smaller than this size, you can make a bigger panel and use slots to separate the board.

Max size500*500mm
Available Board Layers1-16 layers
Available Board QtyMin:5pcs
Max: 8000pcs
Dielectric Constant4.2-4.7
Dielectric Separation thickness0.075 - 5.0
Available Board Thickness1-2 layers0.6, 0.8, 1, 1.2, 1.6, 2, 2.5, 3 
4 layers0.8, 1, 1.2, 1.6, 2, 2.5, 3 
6-8 layers1, 1.2, 1.6, 2, 2.5, 3 
10 layers1.2, 1.6, 2, 2.5, 3 
12 layers1.6, 2, 2.5, 3 
14 layers2, 2.5, 3 
16 layers2.5,3 
Available Board Copper Weigh1oz.  2oz.  3oz.
Board Thickness Tolerance± 10%
Minimum trace spacing / width


      
For 1oz, 4/4mil, 5/5mil, 6/6mil
For 2oz, 10/10mil
For 3oz, 15/15mil
Minimum trace width in inner layers
(for 4 layers board)
  ≥6mil
Minimum distance between trace and copper pour
 For 1oz     ≥8mil
 For 2oz     ≥12mil 
 For 3oz     ≥15mi
Minimum distance between vias

≥12mil
Aim to prevent Ion migration

Minimum distance between via and trace


≥5.5mil
Aim to prevent Ion migration

Annular Rings ≥0.152mm/6mil
Outer Layer Copper Thickness  0.035-0.07(1oz-2oz)
Inner Layer Copper Thickness  0.017(0.5oz)
Drilling Hole Diameter(Mechanical)

0.2 - 6.5mm 
Width of Solder Mask Dam
Normal:
≥0.32mm for Green
≥0.35mm for Other colors
Limitation:
≥0.10mm for Green
≥0.13mm for Other colors

Diameter of Castellated Holes

≥0.60mm

Size of BGA
For 6/6mil ≥0.45mm
For 5/5mil ≥0.35mm
For 4/4mil ≥0.25mm
Circuit to edge  ≥0.3mm
Minimum distance between inner trace and drilling hole  ≥0.2mm/7.87mil
Minimum silkscreen height/trace width  height ≥0.5842mm /23mil
trace width ≥0.1016mm /4mil
Perfect aspect ratio of silkscreen1:5
Silkscreen colour  
 Silkscreen colour is WHITE   when solder mask is Green, Red, Yellow, Blue, Black

Silkscreen colour is BLACK when solder mask is white  



Minimum distance between pad and silkscreen
≥0.1524mm/6mil
Minimum milling slot width≥0.8mm
Slot Tolerance(Mechanical)±0.15mm
The minimum board dimension of V-CUT
The V-cut line only is cut from edge to edge
≥70*55mm
The maximum board dimension of V-CUT≤380*380mm
The minimum sub-board dimension of V-CUT

≥8*8mm

PCB production time(build time) 3-14 working days


Aluminum Board Specification
Layer:1,2
Available Board Thickness:1mm, 1.2mm, 1.6mm, 2mm
QTY within: min : 5, max:8000
Board Dimension:min : 10mm*10mm
max : 500*500mm
Available Board Colour:White (Silkscreen is black)
Black (Silkscreen is white )
Copper weight:1oz
Surface Finish: HASL, HASL lead free,  ENIG, OSP,Hard Gold
Minimum Trace Width: 4mil
Minimum Trace Spacing: 4mil
Minimum Drilling Hole: 0.2mm
Production Lead Time:5-11 business days

FPC Board Specification
Layer:1,2
Available Board Thickness:0.1mm,0.15mm
QTY within:min:5,max:100
Board Dimension:max:100mm*100mm
Available Board Colour:Yellow
Silkscreen:White
Copper weight:0.5oz
Surface Finish:ENIG
Minimum Trace Width:0.10mm
Minimum Trace Spacing:0.10mm
Minimum Drilling Hole:0.3mm
Production Lead Time:5-7 business days




3.Panelization Rules:

Please click here for more details.


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