## Controlled Impedance

[http://design.iconnect007.com/index.php/article/62513/what-is-trace-impedance-and-why-do-we-care/62516/](http://design.iconnect007.com/index.php/article/62513/what-is-trace-impedance-and-why-do-we-care/62516/)

  

## Dont forget at end:

- Double check impedance control
    
    - includes vias and removing of stubs (backdrilling of vias)
- No traces at board edge
- Many stitching vias everywhere