8-Layer PCB Prototyping | High-Density Interconnection for AI and Data Centers
In the wave of AI computing power explosion and data center upgrades, traditional PCBs can no longer meet the demands for high-frequency and high-density signal transmission. Our team encountered an urgent requirement from an AI server manufacturer—signal delays frequently occurred during data processing on their existing 6-layer board, resulting in a 30% overall performance drop. After repeated testing, we ultimately resolved this pain point with an 8-layer high-density interconnection PCB solution.
Core ParametersLayers:8 layers (supports flexible customization for 1st/2nd stage stacking)Line Width/Spacing: 3mil/3mil (minimum can be 2.5mil)Material: Uses ultra-low loss PanasonicMEGTRON6 or Rogers RO4350BCopper Thickness:1oz-2oz adjustable, suitable for high current scenariosImpedance Control:±5% tolerance, ensuring signal integrity
Process Breakthroughs
1.Laser Blind Via Technology: Micro-holes with a diameter of 0.1mm achieve an equivalent interconnection density of 20 layers, increasing routing space by 40%;
2.Mixed Pressure Structure Design: High-frequency layers and power layers are separated in layout, reducing crosstalk tobelow 0.5dB;
3.3D Simulation Verification: Jointly conducted thermal coupling simulations with ANSYS to preemptively avoid deformation risks.
Customer ValidationCustomized 8-layer HDI board for a North American data center supplier, achieving after bulk delivery:
·Signal transmission rate increased to56Gbps, meeting PCIe 5.0 standards;
·0.3mm ultra-thin area passed 200 thermal cycling tests without delamination.
Application Scenarios
·AI accelerator cards: Supporting heterogeneous interconnection of multiple GPU/TPU chips
·Smart switches: Achieving stable docking of 400G optical modules
·Storage servers: Addressing the ultra-high throughput demands of NVMe protocols
Why Choose Us?Dingji Electronics has 15 years of experience in high-end PCB manufacturing, with the addition of a German LPKF laser drilling production line in 2023, combined with X-ray inspection to achieve 100% micro-hole quality screening. We have passed ISO13485 medical-grade certification and have provided urgent prototyping services for 36 of the world’s top 50 technology companies (with the fastest delivery in 72 hours).
“From design to mass production, we are not just a supplier, but your guardian of circuit performance.”