Owner manual

aTCA-RN720 User's Guide
54
11.2 Layer Stack-up
The layering of the PCB is illustrated in Figure 11-2.The blade has 10layers of PCB laminate with
FR408HR material, which has a low dielectric constant and low dissipation factor that are
adequate to support 10Gbps SerDes signals.
Design Specifications Design Specifications
Lyrs: 1L(Ref 2L) & 10L(Ref 9L) Lyrs: 1L(Ref 2L) & 10L(Ref 9L)
Line: 5.30mil Line: 3.70mil Space: 6.30mil
Zo: 50 Tol: 10% Zd: 100 Tol: 10%
Lyrs: 3L(Ref 2L & 4L) Lyrs: 3L(Ref 2L & 4L)
Line: 6.10mil Line: 4.35mil Space: 5.65mil
Zo: 50 Tol: 10% Zd: 100 Tol: 10%
Lyrs 8L(Ref 7L & 9L) Lyrs 8L(Ref 7L & 9L)
Line 6.10mil Line 4.35mil Space: 5.65mil
Zo: 50 Tol: 10% Zd: 100 Tol: 10%
Zo Line Zd Line Space Line
1 49.9 5.30 100.1 3.70 6.30 3.70 10.00 1
2 2
3 50.0 6.10 99.8 4.35 5.65 4.35 10.00 3
4 4
5 5
6 6
7 7
8 50.0 6.10 99.8 4.35 5.65 4.35 10.00 8
9 9
10 49.9 5.30 100.1 3.70 6.30 3.70 10.00 10
Figure 11-2 PCB Layer Stack-up