VR2R-0338
① SA Source
- Source: 開啟完整 SA 文章
- Section:
PCB Materials Upgrade and Area Growth - Line hint:
296
Context Before
The classification of CCL materials is determined by its dielectric constant (Dk) and dissipation factor (Df) at a given frequency. Insertion loss is lower at lower Dk and Df value. The common classification is anchored to the Megtron series from Panasonic as they have been setting the industry standard.
Evidence
When people describe the CCL as M7 classification it usually means it matches the same Dk and Df specifications as Megtron 7 of Panasonic.
Context After
Copper foil content in Rubin is upgraded from HVLP2 to HVLP4 grade copper foil for the signal layers. As discussed earlier, due to the skin effect, smoother copper foil equals to lower insertion loss. HVLP is the classification of copper foil standing for Ultra-Low Profile Copper Foil. The higher the HVLP grade equals to lower surface roughness.
② Atomic Claim
當 CCL 被描述為 M7 classification，通常代表其 Dk 與 Df specifications 與 Panasonic Megtron 7 相同。
- Epistemic Mode:
ASSERTED - Mapping Status:
PARTIAL
③ Semantic Frame
{
"attribute": "M7_REFERENCE_SPECIFICATION",
"context_nodes": [],
"entity": {
"id": "04_knowledge_base/Copper-clad laminate",
"label": "CCL"
},
"frame_type": "ATTRIBUTE",
"qualifiers": {
"condition_text": "Panasonic Megtron 7 is plain text in source claim",
"numeric_mentions": [
"M7",
"7"
],
"temporal_mentions": []
},
"value": {
"numeric_mentions": [
"M7",
"7"
],
"value_text": "M7 classification usually means matching the Dk and Df specifications of Panasonic Megtron 7."
}
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| entity | CCL | 04_knowledge_base/Copper-clad laminate |
⑤ Human Review
請在 Properties 逐項確認：
- 原文 → Atomic Claim 是否忠實
- Atomic Claim → Semantic Frame 是否忠實
- Canonical Entity mapping 是否正確
- Epistemic mode 是否保留原文語氣
- 最後選擇
review_action
Review state
Markdown 內文不是正式 approval。只有 Apply bridge 寫入的 Decision Ledger event 才是正式決策。