Lumped / Distributed Line Length Calculator

Updated Feb 16, 2020

Digital     1/4  
RF Ckts  1/12
Analog    1/16
Stitching Vias 1/20

Inner layer example calculation where Risetime = 5nSec

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Lumped / Distributed Line Length Boundary ~ 7.27 Inches

Outer layer example calculation where Risetime = 5nSec

Note Effective ER (2.55) is lower on outer layers

That's it !