Controlled Impedance

Controlled Impedance PCBs are used across a broad range of applications to help ensure high signal integrity. It is the characteristic impedance of the PCB transmission lines that the designer and fabricator are setting out to control.

Impedance is measured in Ohms (Ω) and is an AC characteristic which becomes important as the signal frequency increases. Typically they become critical for PCB traces at signal components of two hundred MHz and above.

Our trained CAD engineers are more than happy to work with you at your design stage on any of your controlled impedance PCBs. Multiple impedance requirements can be added to one board. Ranging from a single track on a surface layer to multiple impedance buried deep in multilayers.

Firstly your track and gaps, layer builds, and calculations can be verified using our licensed Polar software. Our resulting confirmation that your design is correct and manufacturable. Secondly, once the boards have been manufactured we test the impedance. Additional impedance coupons are added onto our manufacturing panels. These coupons match your track and gap requirements as indicated within your data. We test these using our Polar CITS Controlled Impedance hardware resulting in confirmation of your figures.

Finally, test results can be supplied in a report when delivered with your finished printed circuit boards.

We have multiple impedance calculators available on our website, click on the pictures below or select one from the menu above.

For more information on any of the details mentioned above please contact a member of our team.