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Balanced Construction

Keeping a balanced construction includes the following:

  • Dielectric thickness of layer
  • Copper thickness of layers and its distribution
  • Location of signal and plane layers
  • Glass-styles used in laminates and pre pregs.

Power planes:  typically built on thinnest cores available to maximize capacitance between the planes; thicker copper is often used to reduce resistance.

Power planes also provide stable reference voltages for signals, distribute power to all devices, and controls cross talk between signals.

Plane layers should be balanced around the Z-axis median line and typically routed internally.

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