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PCB Trace DC Resistance Estimate

Online pcb trace dc resistance estimate. Uniform rectangular trace; no current-carrying or temperature safety rating.

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pcb trace dc resistance calculator online

Use pcb trace dc resistance estimate online for length mm, width mm, thickness um, resistivity ohm m. Uniform rectangular trace; no current-carrying or temperature safety rating. Ideal nominal component model. Verify topology, operating range, tolerances and ratings against the actual component datasheet.

How to use it

Enter length mm. Set width mm, thickness um, resistivity ohm m. Select Calculate and check the labeled output. Copy or download the JSON result.

Options and example settings

OptionChoices / valueExample default
length mmMain input. Positive values. 100
width mmOption. Positive values. 1
thickness umOption. Positive values. 35
resistivity ohm mOption. Positive values. 1.68e-8

Calculation method

resistance_ohm = resistivity_ohm_m*length_mm*1e-3/(width_mm*1e-3*thickness_um*1e-6) (^ means exponentiation; trig functions ending in d use degrees).

Worked examples

Apply pcb trace dc resistance estimate to the case below, keeping the displayed units and assumptions. Uniform rectangular trace; no current-carrying or temperature safety rating.

PCB Trace DC Resistance Estimate — worked case

Settings: width mm: 1; thickness um: 35; resistivity ohm m: 1.68e-8

Input:

100

Calculated result for these inputs:

Output:

{
  "resistance_ohm": 0.048
}

Choose the right tool

Match the topology before entering values: series and parallel networks, inverting and noninverting stages, and buck and boost converters use different equations. Component ratings, parasitics, protection and measured conditions require separate review.

Limitations and common mistakes

  • Uniform rectangular trace; no current-carrying or temperature safety rating. Ideal nominal component model. Verify topology, operating range, tolerances and ratings against the actual component datasheet.
  • Use the displayed unit in every field. Ratios and percentages are different inputs; percent fields use values such as 25 rather than 0.25.

Frequently asked questions

How can I use pcb trace dc resistance calculator online?

Enter length mm. Set width mm, thickness um, resistivity ohm m. Select Calculate and check the labeled output. Copy or download the JSON result.

Technical references

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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