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Surface roughness profile for multi-layer PCBs

Surface roughness profile for multi-layer PCBs
Surface roughness profile for multi-layer PCBs

28*******1A

2024-12-28 04:47 AM

What is the surface roughness of the copper laminate used in impedance controlled NP-155F (Tg155) multi-layer PCBs? I would like to apply a Modified Hammerstad roughness model to my high-speed designs.