Dielectric constant is not a fixed magic number, and loss tangent is not a small side note. This article explains how frequency changes both values, why PCB datasheets can mislead buyers, and how engineers should select materials before cost mistakes become production problems.
MC PCB.,Ltd, alongside Dongguan MaoChang Printed Circuit Board Limited，has focused on PCB manufacturing over 20 years. MaoChang Printed Circuit Board Limited, a professional PCB factory for Quick Turn PCB, Prototype PCB and High Mix Low Volume fabrication. With UL certification for Rigid FR-4 / High Frequency / Aluminum Based PCB production.
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