Semiconductor Fabs in Japan

Where the fabs are

Japan's fabs are spread across the country rather than concentrated in one hub. Kyushu has the most, including JASM and Sony's image sensor fabs; northern Japan combines Kioxia's NAND production with the new Rapidus fab. The map is a schematic of Japan's seven regions, not a geographic map.

Hokkaido & Tohoku (4)

More on this region: Hokkaido & Tohoku semiconductor region

• Rapidus IIM-1Chitose, Hokkaido
  Rapidus · 2 nm logic (in development)

  Pilot line started in 2025; mass production targeted for 2027.

• Kitakami PlantKitakami, Iwate
  Kioxia (with SanDisk) · 3D NAND flash (BiCS FLASH)
• Yamagata Technology CenterTsuruoka, Yamagata
  Sony Semiconductor Manufacturing · CMOS image sensors
• Fuji Electric Tsugaru SemiconductorAomori
  Fuji Electric · Power semiconductor devices

  Acquired from Renesas in 2012.

Kanto (Tokyo area) (1)

More on this region: Kanto (Tokyo area) semiconductor region

• Naka FactoryHitachinaka, Ibaraki
  Renesas Electronics · Microcontrollers and SoCs

  Renesas's most advanced in-house logic line (40 nm); finer nodes are made at foundries.

Hokuriku & Koshinetsu (3)

More on this region: Hokuriku & Koshinetsu semiconductor region

• Kofu FactoryKai, Yamanashi
  Renesas Electronics · Power semiconductors (300 mm)

  Closed in 2014 and restarted in April 2024 as a 300 mm power semiconductor line.

• Kaga Toshiba ElectronicsNomi, Ishikawa
  Toshiba Electronic Devices & Storage · Power semiconductors and discrete devices

  One of the Toshiba Group's largest power semiconductor production bases in Japan.

• Matsumoto FactoryMatsumoto, Nagano
  Fuji Electric · Power semiconductor devices

Tokai (2)

More on this region: Tokai semiconductor region

• Yokkaichi PlantYokkaichi, Mie
  Kioxia (with SanDisk) · 3D NAND flash (BiCS FLASH)
• United Semiconductor JapanKuwana, Mie
  UMC Group · Foundry logic

  The Japanese foundry subsidiary of Taiwan's UMC.

Kinki (Kansai) (1)

More on this region: Kinki (Kansai) semiconductor region

• Itami FactoryItami, Hyogo
  Mitsubishi Electric · Power semiconductors, high-frequency and optical devices

Chugoku & Shikoku (2)

More on this region: Chugoku & Shikoku semiconductor region

• Hiroshima PlantHigashihiroshima, Hiroshima
  Micron Memory Japan · DRAM

  The former Elpida Memory fab, acquired by Micron Technology.

• Fukuyama FactoryFukuyama, Hiroshima
  Mitsubishi Electric · Power semiconductors

Kyushu (8)

More on this region: Kyushu semiconductor region

• JASM Fab 1Kikuyo, Kumamoto
  JASM (TSMC majority-owned) · Foundry logic on 12/16 nm FinFET and 22/28 nm processes

  In production since December 2024; 55,000 12-inch wafers per month.

• Kumamoto Technology CenterKikuyo, Kumamoto
  Sony Semiconductor Manufacturing · CMOS image sensors
• Nagasaki Technology CenterNagasaki
  Sony Semiconductor Manufacturing · CMOS image sensors
• Oita Technology CenterOita
  Sony Semiconductor Manufacturing · Image sensors
• Kawashiri FactoryKumamoto, Kumamoto
  Renesas Electronics · Front-end wafer fab
• Koshi FactoryKoshi, Kumamoto
  Mitsubishi Electric · Power semiconductors
• Miyazaki No. 2 PlantKunitomi, Miyazaki
  LAPIS Semiconductor (ROHM Group) · SiC power semiconductors

  A former solar-panel plant converted into ROHM's main SiC production site, operating from 2024.

• ROHM Apollo Chikugo PlantChikugo, Fukuoka
  ROHM Apollo (ROHM Group) · SiC power devices

  A new SiC production building began operating in fiscal 2022 on 6-inch wafers, with equipment prepared for 8-inch.

About this list

The list covers front-end wafer fabs whose operator, location and products could be confirmed from public sources. It does not include back-end assembly and test plants, R&D lines or equipment and materials plants; those appear on the company pages and on the regions pages. Capacity figures are given only where the operator has published them.

Sources

1. Wikipedia: Japan Advanced Semiconductor Manufacturing
2. Wikipedia: Rapidus
3. Wikipedia: Kioxia
4. Wikipedia (Japanese): Micron Memory Japan
5. Wikipedia (Japanese): Sony Semiconductor Manufacturing
6. Wikipedia (Japanese): Renesas Electronics
7. Wikipedia (Japanese): Mitsubishi Electric
8. Wikipedia (Japanese): LAPIS Semiconductor
9. ROHM Group Integrated Report 2023 (PDF)
10. Wikipedia (Japanese): Kaga Toshiba Electronics
11. Wikipedia (Japanese): United Semiconductor Japan
12. Wikipedia (Japanese): Fuji Electric

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