PCB Trace Analyzer
⚡ WARNING
Parameters
0.1 A35 A
0.1 mm10 mm
1 mm500 mm
0 °C85 °C
5 °C80 °C
Live Visualization
Top View (Width: 2.00 mm)
Cross-section (1 oz = 34.8 µm thick)
94%
Analysis Results
Current Utilization
93.6%
5.0 A / 5.34 A capacity
Resistance
25.26 mΩ
Voltage Drop
126.29 mV
Power Loss
631.5 mW
Final Temperature
42.5 °C
Temperature Rise
17.5 °C
REVERSE Min Required Width
1.826 mm
✓ Current width OK (0.17 mm margin)
IPC-2221B § 6.2
Current carrying capacity, external layer
Trace Path Builder
Chain multiple trace segments in series to analyze a complete power path. Detects the bottleneck segment — the narrowest section with the highest thermal stress.
Trace Path Builder 3 segments
Utilization 91%
Capacity 8.83 A
Resistance 6.31 mΩ
ΔT Rise 16.4 °C
⚠ BOTTLENECK
Utilization 248%
Capacity 3.23 A
Resistance 1.52 mΩ
ΔT Rise 122.6 °C
Utilization 91%
Capacity 8.83 A
Resistance 6.31 mΩ
ΔT Rise 16.4 °C
Path Summary
Total Resistance 14.14 mΩ
Total Voltage Drop 113.16 mV
Total Power Loss 905.3 mW
Worst Segment Segment B (Neck-down)
How It Works
Current Capacity (IPC-2221B)
I = k · ΔT0.44 · A0.725
Where k = 0.048 (external) / 0.024 (internal), ΔT = temperature rise (°C), A = cross-section area (mil²).
Trace Resistance
R = ρ(T) · L / A
Copper resistivity ρ = 1.724×10⁻⁸ Ω·m at 20°C, with temperature correction α = 3.93×10⁻³ /°C.
Thermal Heatmap
Hue = 120 · (1 − I/Imax)
HSL color: hue slides from 120° (green, safe) to 0° (red, danger) as current utilization increases.
Reverse Calculation
Wmin = Arequired / t
Inverting the IPC-2221B formula to find the minimum trace width that safely carries a given current.
Related Tools
Feedback & Bug Reports
Help improve this tool
Did you find a miscalculation? Have an idea for a new feature? I actively maintain this project and would love to hear from you. Drop a message and let's make PCB design easier for everyone.