PCB Design
PCB Trace Impedance Calculator
Calculate characteristic impedance for microstrip and stripline configurations to ensure optimal signal integrity in your PCB designs.
Interactive PCB Trace Calculator
Enter PCB parameters to calculate trace impedance and optimize your design
PCB Structure
Microstrip Line Structure
━━━━━━━━━━━━━━━━ (Trace, thickness t)
░░░░░░░░░░░░░░░░ (Dielectric, thickness h)
████████████████ (Ground plane)
Width: w, Dielectric constant: εᵣ
Calculation Formula
Z₀ = (60/√εᵣ) × ln(8h/w + w/4h) (w/h ≤ 1)
Z₀ = 120π/(√εᵣ × (w/h + K)) (w/h > 1)
• Microstrip: Trace on PCB surface
• Effective dielectric: εᵣₑff = (εᵣ+1)/2 + (εᵣ-1)/2 × (1+12h/w)^(-0.5)
Common values: FR4≈4.3, Rogers≈3.5, PTFE≈2.2
Advanced PCB Design Guide Coming Soon
We're developing comprehensive content on PCB trace design, signal integrity, and layout best practices.
Explore RLC Calculator