HEMEIXIN PCB Trace Width Calculator | |||||||
---|---|---|---|---|---|---|---|
Input Data | Results Data | ||||||
Internal Traces | External Traces | ||||||
Field | Value | Units | Trace Data | Value | Units | Value | Units |
Current (max. 35A) | Required Trace Width | ||||||
Temperature Rise (max. 100°C) | Cross-section Area | ||||||
Cu thickness | Resistance | Ω Ohms | Ω Ohms | ||||
Ambient Temperature | Voltage Drop | Volts | Volts | ||||
Conductor Length | Loss | Watts | Watts | ||||
Peak Voltage | Volts | Required Track Clearance |
The trace width is calculated as follows:
First, the Area is calculated:
Area[mils^2] = (Current[Amps]/(k*(Temp_Rise[deg. C])^b))^(1/c)
Then, the Width is calculated:
Width[mils] = Area[mils^2]/(Thickness[oz]*1.378[mils/oz])
For IPC-2221 internal layers: k = 0.024, b = 0.44, c = 0.725
For IPC-2221 external layers: k = 0.048, b = 0.44, c = 0.725
where k, b, and c are constants resulting from curve fitting to the IPC-2221 curves
I’ve added a recommended track clearance value based on the UL rule:
clearance in inches = 0.023″ + (0.0002″ x V)
Change a value in an input field, then press TAB to move to the next field. The results tables will be updated automatically.