PTFE Enters Core Validation Phase for AI High-Speed PCBs: Why Does a Backplane Matter to the New Materials Chain?

Rubin Ultra has not yet entered mass production, yet a material previously mainly used in RF and radar applications has become an early hotspot in the AI industry chain. Recent supply chain information indicates that validation of PTFE multilayer boards is deepening, with end customers beginning to establish relevant material specifications, and multiple candidate material solutions emerging for Switch Tray and orthogonal backplanes. Does the question of whether PTFE can enter next-generation AI servers only affect demand for one type of resin? As in-cabinet interconnect approaches the performance limits of traditional PCB materials, a new materials upgrade covering PTFE, high-end spherical silica micropowder, hydrocarbon resin, Q-cloth, and CCL manufacturing may have already started ahead of schedule.