PCB Trace Width Calculator
Calculate minimum trace width for your current using IPC-2152 standards
Parameters
0.5A10 A50A
5°C20°C60°C
Internal layers require wider traces due to reduced heat dissipation
Optional: Resistance Calculation
Minimum Trace Width
4.72 mm
(186.0 mils)
Recommended Standard Width
4.72 mm
Next standard size above minimum
Visual Preview
PCB (External Layer)
Copper: 1 oz (35 µm)
Width: 4.72mmThickness: 35µm
Electrical Properties
5579.42
Resistance (mΩ)
55794.2
Voltage Drop (mV)
557942
Power Loss (mW)
45
Final Temp (°C)
IPC-2152 Formula
Area = (I / (k × ΔT0.44))1/0.725
k = 0.048 (external)
IPC-2152 supersedes IPC-2221 with more accurate thermal modeling. Values are for DC or low-frequency AC current.