External PCB Trace Max Current

Calculate the maximum current of a trace

EEWeb

Trace Max Current Calculator

Choose Type

Microstrip Max Current Calculator

Inputs

Trace Width

Trace Thickness

Temperature Rise

Trise

Additional Inputs

Ambient Temperature

Tamb

Length

Output

Max Current:

Additional Output

Trace Temperature:

Resistance:

Voltage Drop:

Power Dissipation:

Tool Description

Trace max current is a requirement that designers specify to ensure that the trace can handle the required current capacity. This tool calculates the max trace current based upon the following design specifications:

Trace Width
Trace Thickness
Max Desired Temperature Rise

This tool also calculates the following additional valuable information related to the trace:

Resistance
Votlage Drop
Trace Power Dissipation

After a user specifies the trace width, trace thickness, and desired max temperature rise, the tool calculates the max current. This tool is based on charts in IPC-2221