Bosch Begins Sample Production at First U.S. Silicon Carbide Chip Plant

German automotive components giant Bosch announced Monday it has begun sample production at its first U.S. semiconductor factory, a major step in strengthening the domestic supply chain for critical chips used in electric vehicles and other high-tech applications.

The move finalizes a $225 million funding agreement with the U.S. Commerce Department as part of a broader $2 billion investment by Bosch to establish the facility in Roseville, California.

Strategic Investment and Federal Support

Bosch acquired the plant from TSI Semiconductors in 2023 and has since reconfigured it to produce specialized silicon carbide (SiC) semiconductors. The company stated that commercial production is slated to begin later this year.

The federal funding is provided by the Commerce Department’s CHIPS Program Office, which was established under the 2022 CHIPS and Science Act to reduce U.S. reliance on foreign chip manufacturing. The initiative aims to prevent a repeat of the widespread supply chain disruptions experienced during the COVID-19 pandemic.

“The Trump Administration is committed to developing a secure supply chain here in the United States that will enable continued innovation and competitive leadership,” said Secretary of Commerce Howard Lutnick in a statement.

Focus on Silicon Carbide Chips

Unlike traditional silicon chips, silicon carbide semiconductors are designed to efficiently manage high-voltage electricity. This makes them essential for the electric vehicle industry, where they help transfer power from the battery to the motor, improving driving range and charging performance by reducing energy loss.

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Paul Thomas, president and CEO of Bosch in North America, told Reuters that the applications extend beyond EVs. The chips are also critical for:

• Powering data centers
• Use in hybrid vehicles
• Defense applications

This diverse demand helps support the investment, even as sales growth for all-electric vehicles has recently slowed.

Market Context and Future Plans

The new facility is a key part of a larger trend of reshoring manufacturing to North America, driven by geopolitical concerns and trade policies like the U.S.-Mexico-Canada Agreement (USMCA). Thomas noted that automakers increasingly want to partner with suppliers that have robust and local supply chains.

This project is part of Bosch's long-term commitment to its U.S. operations. The company said on Monday that it plans to invest up to $7.5 billion in the region through 2031.