Controlled impedance

Controlled impedance

Printed circuit boards (pcb) are conductive paths located on an insulating substrate with the role of connection between different electronic components.

The term "controlled impedance" refers to the electrical interconnection paths between electronic components that present a constant impedance when propagating signals.

The impedance depends on the path geometry and the electrical permittivity of the substrate.

Stack-up printed circuit boards 4 layers

Layer Top
Prepreg
Layer Inner 1
Core
Layer Inner 2
Prepreg
Layer Bottom

Stack-up printed circuit boards 6 layers

Layer Top
Prepreg
Layer Inner 1
Core 1
Layer Inner 2
Prepreg
Layer Inner 3
Core 2
Layer Inner 4
Prepreg
Layer Bottom

 

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