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Thick copper Heavy Copper PCB Design Guide
A) Min Plated Through Hole (PTH) Diameter
PTH should be >=0.3mm; copper ring annular: 0.15mm
B)The most important heavy copper PCB design guide and DFM (design for manufacturing) is the line width and line space for heavy copper PCB, meanwhile the DFM (design for manufacturing) is very important for heavy copper PCB because most of PCB design guides will not meet heavy copper PCB. Lots PCB supplier can manufacture PCB with 3 mil ~ 4mil line width and line space as min trace/space, but it is not meet the requests of heavy copper PCB, 3 mil circuit line width is always for 0.5 OZ or 1 OZ copper layer on PCB, but not for heavy copper PCB (3 OZ ~ 20 OZ copper PCB), you know PCB manufacturer can't do 3 mil line line space for 20 OZ PCB, this is why PCB designer have to consider the DFM.
Meanwhile, you can visit heavy copper PCB and FAQ of heavy copper PCB for more information.
A) Line Space & Line Width on heavy copper PCB
When design the board, you should consider relationship between Minimum line space (refers to Min LS later) and Minimum line width (refers to Min LW later). And to have a bigger value will make the board easier to be made.
C) Wall copper thickness for PTH: Normal: 20um-25um, and Max 2-5OZ (50-100um).
D) Max layers: For heavy copper, max layers we can make is 10L.
Board thickness should be >1.6mm for 20OZ copper.
Impedance control, high Tg, are not workable for heavy copper.
Min Via: 0.3mm.
E): Max board size: 400x300mm is the most economical. Bigger size (500x500mm) also workable but cost will be much higher.
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Relationship between |
Special Parameters |
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|
Copper |
Min LW |
Min LS |
Copper |
Min LW |
Min LS |
|
2OZ |
0.20mm |
0.23mm |
2OZ |
0.20mm |
0.23mm |
|
3OZ |
0.30mm |
0.30mm |
3OZ |
0.30mm |
0.28mm |
|
4OZ |
0.40mm |
0.40mm |
4OZ |
0.40mm |
0.35mm |
|
5OZ |
0.50mm |
0.50mm |
5OZ |
0.50mm |
0.45mm |
|
6OZ |
0.60mm |
0.60mm |
6OZ |
0.60mm |
0.55mm |
|
7OZ |
0.70mm |
0.70mm |
7OZ |
0.70mm |
0.65mm |
|
8OZ |
0.80mm |
0.80mm |
8OZ |
0.80mm |
0.75mm |
|
9OZ |
0.90mm |
0.90mm |
9OZ |
0.90mm |
0.85mm |
|
10OZ |
1.00mm |
1.00mm |
10OZ |
1.00mm |
0.90mm |
|
11OZ |
1.10mm |
1.10mm |
11OZ |
1.10mm |
1.0mm |
|
12OZ |
1.20mm |
1.20mm |
12OZ |
1.20mm |
|
|
13OZ |
1.30mm |
1.30mm |
13OZ |
1.30mm |
|
|
14OZ |
1.40mm |
1.40mm |
14OZ |
1.40mm |
|
|
15OZ |
1.50mm |
1.50mm |
15OZ |
1.50mm |
|
|
16OZ |
1.60mm |
1.60mm |
16OZ |
1.60mm |
|
|
17OZ |
1.70mm |
1.70mm |
17OZ |
1.70mm |
|
|
18OZ |
1.80mm |
1.80mm |
18OZ |
1.80mm |
|
|
19OZ |
1.90mm |
1.90mm |
19OZ |
1.90mm |
|
|
20OZ |
2.00mm |
2.00mm |
20OZ |
2.00mm |
|
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Min: Minimum |
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LW: Line Width (Trace Width) |
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LS: Line Space (Trace Space/Margin/Clearance) |
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Contact: Ms Tracy
Phone: 0086 18682010757
Tel: 0086 18682010757
Add: BludingA,Shixiaganglian Industrial Park,Shajing,Baoan,Shenzhen,China