Anyi-Semic / ST-Sanan JV (Chongqing 8-inch SiC) · 安意法半导体有限公司
Anyiwa Semiconductor Co., Ltd. (STMicroelectronics–Sanan JV) | Compound Semiconductor
STMicroelectronics’ China-for-China twin of its Catania 200mm SiC strategy: an 8-inch automotive SiC device fab built in ~20 months (per ST’s CEO), line activated 27 February 2025, and reported by March 2026 as China’s first 8-inch automotive-grade SiC line to reach volume production (2,000 wafers/week). JV entity formed August 2023; total project investment ~¥23 billion (~$3.2B) plus ¥7 billion for the co-located Chongqing Sanan substrate plant (activated September 2024).
Chinese name: 安意法半导体有限公司 (Ānyìfǎ Bàndǎotǐ Yǒuxiàn Gōngsī)
What does this facility make?
8-inch car-grade SiC MOSFET epi and die, ST-branded, feeding Chinese EV makers’ main-drive inverters.
Why does it matter?
The clearest case of a Western IDM localizing advanced power-device manufacturing inside China for the Chinese market — a structural answer to ‘de-risking’ pressure — and Chongqing’s anchor in its EV-supply-chain buildout around Changan.
Key Facts
| Company | Anyiwa Semiconductor Co., Ltd. (STMicroelectronics–Sanan JV) |
| Type | Compound Semiconductor |
| Category | JV |
| Capability | 8-inch automotive-grade SiC epitaxy + device (chip) fab, 480,000 wafers/year planned full capacity; output sold to ST; companion 8-inch substrate plant 重庆三安 (¥7 billion) |
| Status | Operational |
| Capacity | Not yet recorded |
| Investment | ¥230亿元 |
| Funding Source | Foreign |
| Location | Chongqing, Chongqing Municipality |
| Current Node | Not yet researched |
| Entity List | No |
| Equipment Origin | Not yet assessed |
| Last Verified | Not recorded (newest source dated May 2026) |
Technical Complexity
4/5
Technology Node Trajectory
Node history not yet researched.
Project Timeline
- Aug 2023 — JV company established in Chongqing Xiyong micro-electronics park
- Sep 2024 — Companion Chongqing Sanan 8-inch substrate plant activated
- Feb 2025 — 8-inch SiC device line activated (通线 ceremony, Xinhua)
- Mar 2026 — Volume production of the 2,000 wafers/week car-grade line reported (China first)
Sources
- 安意法半导体重庆8英寸碳化硅项目正式通线 (第一财经) (27 Feb 2025)
- 三安光电：安意法现有产能2000片/周，部分产品完成验证进入风险量产 (同花顺转上海证券报) (19 May 2026)
- 重庆三安-意法半导体8英寸SiC进展盘点 (电子工程专辑) (27 Aug 2025)