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6 Layer PCB Stackup

by: Feb 19,2014 11638 Views 1 Comments Posted in Engineering Technical

PCB Stackup,PCB material,printed circuit board

The 6-layer PCB classic stackup includes four routing layers (two outer and two internal) and two internal planes (one for ground and the other for power).

Again, adhering to this stackup while utilizing FR-4 PCB material and 1 oz copper, the properties of 50 Ohm traces are provided in the table below.

Wrap-up
Remember, these stackups aren’t for every design.  For example, high speed designs will typically always keep power and ground planes on adjacent layers for decoupling and designs that require low electromagnetic emissions may need to utilize additional ground planes for shielding.  One final practicality to consider, always route traces perpendicular on adjacent routing layers, e.g., on the 6-layer stackup, side to side on Internal Routing Layer 1 and top to bottom on Internal Routing Layer 2.  This technique increases routing efficiency and also minimizes crosstalk.


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