High frequency PCB Manufacturer-Shenzhen Chengchi Circuit Technology Co., Ltd.

Layered Design of Multi-Channel Parallel Communication Media on High-Order Multilayer PCBs (6+ Layers)

Devices such as multi-port network switches, server motherboards, automotive central gateways, and 5G baseband adapter boards feature parallel high-speed transmission requirements across multiple protocols—including Ethernet, PCIe, and SATA. When relying solely on a four-layer PCB, the number of ava

Jul 22, 2026 353

Detail

Collaborative Impedance Matching Design for PCB Board-Level Transmission and External Cable Media

A complete wired network communication link comprises two core transmission media: the board-level transmission channel formed by differential traces on the PCB, and the external transmission cables such as twisted-pair, coaxial cable, or optical fiber. In many hardware projects, standalone testing

Jul 21, 2026 498

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Detailed Guide: PCB Outline Dimension Tolerances and Warpage Design Allowance

After completing routing and drilling, a PCB undergoes CNC milling to cut its outline profile, while the lamination process determines the finished board thickness and planar warpage. These three physical dimension tolerances directly dictate assembly precision when interfacing with the enclosure, h

Jul 20, 2026 436

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System-Level DFM Tolerance Control for High-Density Multilayer PCB Lamination Shrinkage and Expansion

Single-layer PCBs involve only standalone tolerances from etching, drilling, and profiling. By contrast, four-layer and higher multilayer printed circuit boards undergo multiple cycles of photoresist exposure, book lay-up and lamination, interlayer alignment, and resin curing. Under combined thermal

Jul 18, 2026 100

Detail

Multi-Layer PCB Inner Layer Signal Partitioning and Bus Planning

Compared to 4–6 layer PCBs—which rely solely on surface layers and a limited number of inner layers for routing—high-layer-count PCBs (8+ layers) provide four to eight dedicated inner layer routing channels. These accommodate massive parallel digital signal lines from components such as FPGAs, CPUs,

Jul 17, 2026 21

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High-Layer Count PCB Lamination, Via Technology, and Mass Production DFM

High-layer count PCBs—characterized by numerous layers, increased board thickness, blind/buried vias, and advanced lamination structures—require design strategies that extend beyond mere signal and power integrity. Designers must proactively account for manufacturing constraints, including laminatio

Jul 16, 2026 324