# PCB行业"M8/M9"等级源自松下Megtron系列CCL

- 来源：SemiAnalysis (@SemiAnalysis_)
- 发布时间：2026-07-30 21:00
- AIHOT 分数：35
- AIHOT 链接：https://aihot.virxact.com/items/cms7juqu00j4qro2e5n2f9vu2
- 原文链接：https://x.com/SemiAnalysis_/status/2082813647034749262

## AI 摘要

PCB行业常说的“M8”或“M9”等级，源自松下Megtron系列铜箔基板（CCL），每一代都降低了耗散因子（Df）以减少高频信号损耗。如今“M8等级”已成为性能代称，指达到Megtron 8电气规格的CCL，无论由松下、EMC还是斗山制造。随着AI服务器对SerDes速率要求提升，高端CCL已成为硬件供应链中最紧缺、增长最快的环节之一。

## 正文

Ever wonder why PCB folks throw around "M8" or "M9" like a spec sheet magic word？

The "M" traces back to Panasonic's Megtron series - long the benchmark for low-loss， high-speed copper clad laminate （CCL）.

Each generation from Megtron 4 to 8 progressively lowered the dissipation factor （Df）， meaning less signal loss at high frequencies.

Because Megtron set the bar， it became industry shorthand for a performance tier rather than a Panasonic-exclusive part number. Say "M8 grade" today， and it simply means "meets Megtron 8 electrical specs" - whether it's made by Panasonic， EMC， or Doosan.

As AI servers demand ever-higher SerDes speeds， high-tier CCL has become the critical bottleneck material. That makes it one of the tightest， fastest-growing segments in the entire hardware supply chain.