1. What is the Impedance Calculator?

The Impedance Calculator estimates characteristic impedance (Z0) for PCB traces using JLCPCB's calculation methodology. It provides accurate impedance values based on various PCB parameters and material properties.

2. How Does the Calculator Work?

The calculator uses the impedance formula:

Where various PCB parameters are considered in the calculation.

3. Importance of Impedance Calculation

Details: Accurate impedance calculation is crucial for high-speed PCB design, signal integrity, and proper impedance matching in transmission lines.

4. Using the Calculator

Tips: Enter all required PCB parameters with appropriate units. Ensure all values are within valid ranges for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What parameters affect impedance calculation?
A: Trace width, dielectric thickness, dielectric constant, and copper thickness are key parameters that influence impedance.

Q2: Why is impedance matching important?
A: Proper impedance matching minimizes signal reflections and ensures optimal signal integrity in high-frequency circuits.

Q3: What are typical impedance values?
A: Common values range from 50Ω for RF applications to 90-100Ω for differential pairs in high-speed digital circuits.