Variable (standard):
Multi-CB selects the layer buildup depending on the manufacturing capacity. This is the option most often chosen by our customers (standard).
New: Defined layer buildup for 4 layers (4L-01)

Optimized for impedance applications (e.g. 100 ohm differential).
Impedance control generally only possible with custom layer buildup.
Custom:
Previous option “special layer construction”
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