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PCB Trace Resistance Calculator
Calculate resistance of PCB traces and conductors
About PCB Trace Resistance
PCB trace resistance affects signal integrity, power distribution, and thermal performance. This calculator helps determine the DC resistance of copper traces based on their dimensions and material properties, accounting for temperature effects.
PCB Trace Resistance Design Tips
- Resistance Formula: R = ρ × L / A, where ρ is resistivity, L is length, A is cross-sectional area
- Temperature Effect: Resistance increases with temperature (positive temperature coefficient)
- Copper Weight: Thicker copper reduces resistance and improves current capacity
- Trace Width: Wider traces have lower resistance per unit length
- Power Loss: P = I²R - consider power dissipation in high-current traces
- Voltage Drop: V = IR - calculate voltage drop for power distribution