18-Layer High-Speed Multilayer PCB — Panasonic M6, 64Gbps, 20:1 Aspect Ratio
High-speed digital PCB with 18 layers on Panasonic M6 (R-5775) laminate. 4.0 mm finished thickness, 0.20 mm minimum drill at 20:1 aspect ratio. Double-sided back-drilling with stub < 0.08 mm. Differential impedance control ±7.5% (≤ 50 Ω) and ±5% (> 5