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Interactive SI Tool
Does Your Channel Fit the Budget?
A rough, first-order check of whether your channel’s dielectric loss fits a typical interface budget. Pick the interface, enter the channel length, and choose the laminate loss class — the bar shows where you land against a representative budget.
- ≤ 60%Comfortable
- 60–90%Tight
- > 90%Over budget
Insertion-Loss Budget Estimator
First-order check of whether your channel’s dielectric loss fits a typical interface budget.
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Estimated dielectric insertion loss across the channel
Rough estimate only. Uses the first-order dielectric-loss approximation αd ≈ 2.3 × f(GHz) × Df × √Dk (dB/inch) at the interface Nyquist frequency, against a representative budget for that interface. It excludes conductor (copper-roughness) loss, via and connector loss, and crosstalk — real margin is always lower. Treat this as a planning sanity check; PCBark models the full channel during DFM.
