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Via Current Capacity

Uses the IPC-2221 approach adapted for cylindrical vias. The current-carrying capacity of a via depends on the cross-sectional area of the copper barrel. Larger diameter and thicker plating both increase capacity.

Inputs

Drill Diameter(mm)

Copper Plating Thickness(mm)

Typical IPC Class 2: 0.025 mm (1 mil)

Temperature Rise(°C)

Results

Max Current1.9023A

Via Resistance1.0806mΩDC resistance of the copper barrel