Microstrip Line Impedance
Estimate single-ended microstrip impedance from trace and board geometry.
Input parameters
Results
Review model limits, solder mask, and manufacturing tolerance.
Model & assumptions
Z0 = 87/√(εr + 1.41) × ln[5.98h/(0.8w + t)].
Surface microstrip approximation: w/h 0.1–2, t/h ≤0.1 and εr 2–10. Continuous ground plane; excludes solder mask and coplanar copper.
Sources
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