Next-generation 112G/224G SerDes channels push FR-4 far beyond its electrical limits. As data center switching, AI computing, and PCIe-6/7 architectures scale upward, loss tangent, copper roughness, and impedance drift become critical bottlenecks. Megtron 7 PCB laminates—Df 0.0012 class, highly stable Dk, and low copper-permittivity interaction—provide an electrically clean foundation for long-reach PAM4 channels. KKPCB integrates...


