The Impact of PCB Material Dielectric Constant on High-Frequency Signal Transmission and Material Selection

Jun 13,2025

This article provides an in-depth exploration of the critical role of Dielectric Constant (Dk) in high-frequency Printed Circuit Board (PCB) design, essential for advanced technologies like 5G, AI, and IoT. It explains how Dk directly impacts signal propagation speed, characteristic impedance, and signal loss, and offers practical strategies for selecting optimal PCB materials based on Dk accuracy, stability, and manufacturability. The content also features a comparison of common high-frequency substrates and highlights Fully Hong's comprehensive solutions for high-performance PCB manufacturing.

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