What does a PCB engineer look for when your Gerber files arrive? This graphic breaks down 25 common DFM checks performed before fabrication. 🔍 Trace width and spacing, annular rings, solder mask, board-edge clearance, panelization, materials, surface finishes, and manufacturing files can all affect whether a PCB can be fabricated as intended. At Seeed Fusion, these details are reviewed before production. If a potential manufacturability issue is found, the team contacts the customer for clarification or confirmation before the order proceeds. The exact checks depend on the board design and manufacturing requirements. Quality control starts before fabrication. 🔗 Explore PCB/PCBA manufacturing options and upload your Gerber files👉: #SeeedFusion# #PCBDesign# #DFM# #PCBManufacturing#

As everyone rushes into Rack-level PCB manufacturing, endless screw-ups are forcing end clients to tread carefully. Expect major share shifts right before mass production for both HDI and high-layer boards." ​But here’s the kicker: all this chaos is actually a huge catalyst for upstream materials and consumables. Poor yields mean sky-high scrap rates, driving an already tight supply chain into an even tighter bottleneck.

C Sun’s Q3 revenue rose 7% from Q2 to NT$2.98 billion, but net profit attributable to shareholders fell 13.3% to NT$555 million, MoneyDJ reported on Oct. 14. For the first nine months, the Taiwanese supplier of semiconductor and PCB manufacturing equipment posted revenue of NT$8.02 billion, up 84.2% year over year. Net profit rose 191.8% to NT$1.66 billion, or NT$10.67 a share. The figures are preliminary. MoneyDJ attributed the sequential profit decline to product mix and non-operating items but did not quantify each factor’s impact.

Is Washington About to Push Chinese PCBs Out of the U.S. Supply Chain? The U.S. is moving toward restrictions on certain China-sourced printed circuit boards (PCBs) in Department of Defense procurement, scheduled to take effect in January 2027. The Printed Circuit Board Association of America (PCBAA) is pushing back against potential delays and broad exemptions, arguing that domestic PCB manufacturing is a national security priority. Some important distinctions: This is NOT a blanket ban on Chinese PCBs. The restrictions target specific defense procurement, not commercial AI servers. U.S. domestic PCB production accounts for only around 4% of global output, according to PCBAA. Advanced AI server PCBs require high-layer-count, high-speed, low-loss manufacturing capabilities that cannot be relocated overnight. Chinese PCB manufacturers could face growing supply-chain scrutiny, while Taiwanese, Japanese, and other non-Chinese suppliers may benefit. The bigger question is whether hyperscalers such as NVIDIA’s major cloud customers will eventually adopt similar sourcing requirements. If geopolitical restrictions expand from defense electronics into commercial AI infrastructure, the implications for the global PCB supply chain could be far greater than the Pentagon’s procurement market alone. #PCB# #AIServers# #SupplyChain# #Semiconductors# #Geopolitics#

My latest supply chain checks indicate that Nvidia has begun testing glass-free copper-clad laminate (CCL) based primarily on hydrocarbon (HC) resin as a replacement for glass-free PTFE-based CCL tested previously, paired with glass-free HC-based PP. The goal is to determine whether this material combination can meet the switch tray PCB requirements for Rubin Ultra NVL576, an eight-rack interconnected solution expected to enter mass production in 2H27. Preliminary tests conducted as part of efforts to improve PCB manufacturability show that glass-free HC CCL meets the switch tray’s high-frequency electrical requirements. Its electrical performance trails that of the original PTFE solution but exceeds that of M9-class solutions and even surpasses M10’s stated specifications. These results do not represent a final material selection, but they indicate that NVIDIA continues to seek higher PCB manufacturing yields and greater production efficiency while meeting electrical requirements. 1. Key Takeaways and Analysis (1) Previous NVL576 switch tray tests used glass-free PTFE CCL paired with glass-free HC PP. The latest round replaces the PTFE CCL with glass-free HC CCL while retaining the same HC PP part number. (2) Shengyi Technology is currently the leading supplier in the NVL576 switch tray material evaluations. The materials involved are SG5300N (glass-free PTFE CCL), SG1030N (glass-free HC CCL), and SIF09 (glass-free HC PP). (3) The primary objective of testing glass-free HC CCL as a replacement for glass-free PTFE CCL is to determine whether PCB manufacturing yields and production efficiency can be improved while still meeting high-frequency electrical requirements. (4) To further improve PCB manufacturability, subsequent tests may also evaluate replacing glass-free HC PP with woven-glass-reinforced HC PP. The challenge is whether the glass-reinforced material can still meet signal integrity and 0.4 dB/in loss requirements. (5) Notably, both SG1030N and SIF09 still contain small amount of PTFE, although HC is the primary material. These tests therefore do not represent a complete shift away from PTFE. Rather, they involve adjusting the primary resin system and material combination to balance high-frequency electrical performance with PCB manufacturability. 2. Conclusions (1) The long-term trend toward broader use of PTFE in advanced PCB materials, including CCL and PP, remains clear. However, the pace of shipment growth over the next two years remains uncertain. Key variables include NVL576 switch tray PCB’s final material selection, NVL576 adoption rate, and development progress on Kyber-like rack designs that use orthogonal backplanes. (2) HC use in advanced CCL and PP continues to expand. Beyond NVL576 switch trays, near-term growth drivers include the production ramp of M9-class materials beginning in 4Q26, followed by the adoption of M10-class materials. (3) Once specifications are finalized and mass production begins, it's expected that Shengyi Technology to accelerate sourcing from Chinese HC suppliers. These include existing suppliers such as Dongcai and Shengquan, as well as potential ones such as GCH Technology. This should help alleviate supply shortages and optimize its cost structure.