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A trace that is internal to the board (inner layer) and is referenced to a ground plane.
Critical Variables
Examples
50 Ohms
70 Ohms
User Input
Dielectric Constant
Total Height (H1)
"
"
"
Height To Plane (H)
"
"
"
Trace Width (W)
"
"
"
Thickness (T)
"
"
"
Impedance (Ohms)
Variance (+/- Ohms)
Trace Width Sensitivity
-0.001
-0.0005
Target
0.0005
0.001
1 Mil Variance =
Ohms
Total Height Spacing
Sensitivity
-0.001
-0.0005
Target
0.0005
0.001
1 Mil Variance =
Ohms
Height To Plane Sensitivity
-0.4
-0.2
Target
0.2
0.4
.1 Mil Variance =
Ohms
Dielectric Constant Sensitivity
-0.001
-0.0005
Target
0.0005
0.001
1 Mil Variance =
Ohms