Hokuriku & Koshinetsu Semiconductor Region

Overview

Equipment and materials makers are here too: Kokusai Electric's main production base is in Toyama, Tokyo Electron develops tools at its Hosaka site in Yamanashi, Shin-Etsu Chemical has plants in Fukui and Niigata, and Shinko Electric makes package substrates in Nagano and Niigata.

Fabs

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

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

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

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

• Matsumoto Factory Matsumoto, Nagano
  Fuji Electric · Power semiconductor devices

Equipment, materials and other company sites

• Tokyo Electron (TEL): Hosaka site (Nirasaki, Yamanashi)
  Coat/develop, etch and deposition equipment
• Kokusai Electric: Toyama production base (Toyama)
  Batch deposition, diffusion and ALD equipment
• Shin-Etsu Chemical: Takefu plant (Echizen, Fukui)
  Silicon wafers, photoresists and photomask blanks
• Shin-Etsu Chemical: Naoetsu plant (Joetsu, Niigata)
  Silicon wafers, photoresists and photomask blanks
• Renesas Electronics: Kofu factory (Kai, Yamanashi)
  Microcontrollers, automotive SoCs, analog and power chips
• Shinko Electric Industries: Wakaho plant (Nagano, Nagano)
  FC-BGA package substrates and lead frames
• Shinko Electric Industries: Takaoka plant (Nakano, Nagano)
  FC-BGA package substrates and lead frames
• Shinko Electric Industries: Arai plant (Myoko, Niigata)
  FC-BGA package substrates and lead frames
• Shinko Electric Industries: Kyogase plant (Agano, Niigata)
  FC-BGA package substrates and lead frames
• Fuji Electric (power semiconductors): Matsumoto factory (Matsumoto, Nagano)
  IGBT modules and SiC power devices
• Toshiba Electronic Devices & Storage: Kaga Toshiba Electronics (Nomi, Ishikawa)
  Power MOSFETs, IGBTs and discrete semiconductors
• Kyocera: Nagano Okaya Plant (Okaya, Nagano)
  Package substrates and ceramic components

Sources

1. Toshiba: construction of a 300 mm power semiconductor fab (Apr 24, 2023)
2. Wikipedia (Japanese): Renesas Electronics
3. Wikipedia (Japanese): Kaga Toshiba Electronics
4. Wikipedia (Japanese): Fuji Electric
5. Tokyo Electron official website
6. Kokusai Electric products
7. Shin-Etsu Chemical official website
8. Renesas: corporate profile
9. Fujitsu: commencement of the tender offer for Shinko shares (Feb 17, 2025)
10. Fuji Electric Review (power semiconductors)
11. Kyocera: official website

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