# Via resistance and loss
# Scope: Thin cylindrical plated barrel DC resistance; pads/contact omitted.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

resistivity = 0.0000000168 ohm*m
length = 1.6 mm
diameter = 0.3 mm
plating = 25 um

area := pi*diameter*plating [mm^2]
resistance := resistivity*length/area [ohm]

check via resistance budget: resistance <= 0.002 ohm

scenario alternative: resistivity = 1.344e-08 ohm*m