What Renesas Electronics makes

Renesas Electronics designs and supplies semiconductors for vehicles, industrial equipment, and connected devices. The automotive business is the largest part of the company's revenue and centers on three product categories: microcontrollers, system-on-chip processors, and analog and power semiconductors.

The automotive microcontroller lineup is anchored by the RH850 family, which handles body electronics, chassis control, powertrain management, and safety-critical functions across a wide range of vehicle architectures. A separate SoC family, R-Car, covers the higher-compute end: advanced driver-assistance systems, cockpit processors, and central vehicle compute. The R-Car V4H and V4M processors are positioned for the software-defined vehicle era, targeting domain controllers and centralized compute nodes that handle sensor fusion and vehicle-to-cloud workloads. Renesas publicly describes its automotive architecture strategy as a "3+1" model, grouping zonal, domain, and cockpit compute under a central vehicle computer, a layout that mirrors the emerging SDV platform designs at the major global OEMs.

On the analog and power side, Renesas supplies power management ICs, motor control devices, and battery management semiconductors for electric and hybrid vehicles. These sit alongside the microcontrollers and SoCs in OEM supply chains, often inside Tier-1 modules before reaching the vehicle assembly line.

The non-automotive business covers IIoT, industrial infrastructure, and cloud infrastructure using Renesas embedded processors, analog chips, and connectivity solutions. Automotive has historically accounted for roughly 40 to 50 percent of company-wide revenue; the Berylls study isolates the automotive portion at EUR 3.79 billion for FY2025.

Financial performance

Renesas ranked 85th in the Berylls by AlixPartners 2026 automotive supplier study, with automotive segment revenue of EUR 3.79 billion in FY2025, down 11.7 percent from EUR 4.29 billion in FY2024. The operating income margin on the automotive segment was 30.7 percent, the highest recorded in the entire Berylls top-100 cohort for FY2025.

On a total-company basis, Renesas reported FY2025 revenue of 1,318.5 billion yen (non-GAAP basis), a 2.2 percent decline from 1,348.5 billion yen in FY2024, per the February 2026 earnings release. Non-GAAP operating profit was 386.9 billion yen, equal to a 29.3 percent operating margin. The automotive segment declined more than the total company because industrial and high-performance computing revenues partially offset automotive softness. CEO Hidetoshi Shibata described automotive end-demand as "sometimes going up, sometimes going down" in the February 2026 earnings call, while calling AI infrastructure demand "very strong."

The company employed 21,629 people worldwide as of December 31, 2025, per company disclosures, and is listed on the Tokyo Stock Exchange Prime Market under ticker 6723.

Ownership and history

Renesas Electronics Corporation in its current form was created in April 2010 through the merger of NEC Electronics Corporation and Renesas Technology Corp., which was itself formed in 2003 from the semiconductor operations of NEC and Hitachi. The merger produced one of the world's largest automotive semiconductor companies, combining NEC's microcontroller heritage with Hitachi's automotive analog and power IC expertise.

The company has grown through acquisition since 2010: Intersil (2017, US analog), Integrated Device Technology (2019, US timing and memory), Dialog Semiconductor (2021, UK power management and Bluetooth), Altium (2024, PCB design software), and Transphorm (2024, gallium nitride power devices). The Altium acquisition added a software and design tools layer to what had been a pure-hardware business.

Renesas is headquartered at TOYOSU FORESIA, 3-2-24 Toyosu, Koto-ku, Tokyo. It operates five front-end wafer fabs in Japan through its wholly-owned subsidiary Renesas Semiconductor Manufacturing Co., Ltd. (Naka, Takasaki, Saijo, Kawashiri, and Kofu), plus back-end assembly and test facilities in Japan, Malaysia (Penang and Kedah), and China.

In February 2026, Renesas announced the sale of its timing business -- clock generation, distribution, and synchronization chips -- to SiTime Corporation for approximately USD 3 billion. The timing business generated around USD 207 million in revenue in FY2024. Renesas framed the divestiture as a focus move, retaining a stake in SiTime common stock and signing an MOU to explore co-development on embedded computing integration.

Certifications and quality

Renesas states that its automotive manufacturing operations and supply chain operate under IATF 16949, the automotive quality management system standard. The company's automotive product lines -- RH850 and R-Car -- carry ISO 26262 functional safety development certifications at the Automotive Safety Integrity Level appropriate for their target applications, per the company's published product documentation. ASIL-D certification applies to safety-critical RH850 variants used in chassis and braking functions.

Renesas describes ASPICE compliance as part of its software development methodology for in-vehicle software products. These certifications are a baseline requirement for supplying automotive OEMs and are described by the company in its customer-facing PPAP and qualification documentation.

Known customers

Renesas does not publish a named customer list. Automotive OEM relationships are documented in the public record through co-development announcements, regulatory filings, and analyst semiconductor supplier maps.

Bosch, Continental, and Denso embed Renesas MCUs in their Tier-1 modules across multiple vehicle programs. Renesas also counts EV platform programs at Chinese OEMs as part of its addressable market, describing the Chinese market as both a challenge and a growth area in earnings materials.

Frequently asked questions

What does Renesas Electronics make?

Renesas Electronics designs and sells semiconductors, primarily for automotive applications. Its automotive products include the RH850 family of microcontrollers for body, chassis, and powertrain control, and the R-Car family of SoCs for ADAS, infotainment, and central vehicle compute. The company also supplies power management ICs, analog devices, and connectivity chips to automotive OEMs and Tier-1 suppliers.

Who owns Renesas Electronics?

Renesas Electronics Corporation is publicly listed on the Tokyo Stock Exchange Prime Market under ticker 6723. It is not controlled by a single parent company; its largest shareholders have historically included institutional investors. The current entity was formed in April 2010 through the merger of NEC Electronics and Renesas Technology Corp., which itself dates to 2003.

What is Renesas Electronics' annual revenue?

Renesas Electronics reported total company revenue of 1,318.5 billion yen for FY2025 on a non-GAAP basis. Its automotive segment revenue was EUR 3.79 billion for FY2025, per the Berylls by AlixPartners 2026 automotive supplier study, down 11.7 percent from EUR 4.29 billion in FY2024. The company's 30.7 percent operating income margin on the automotive segment was the highest in the Berylls top-100 for FY2025.

Where is Renesas Electronics headquartered?

Renesas Electronics is headquartered at TOYOSU FORESIA, 3-2-24 Toyosu, Koto-ku, Tokyo 135-0061, Japan. The company operates five front-end wafer fabrication plants in Japan through its manufacturing subsidiary, and back-end assembly and test facilities in Malaysia and China.

Who are Renesas Electronics' customers?

Renesas does not publish a named customer list. Documented automotive relationships include Toyota and Honda, per OEM co-development press releases, and GM and Volkswagen Group, per S&P Global Mobility semiconductor supplier maps. Bosch, Continental, and Denso incorporate Renesas microcontrollers and SoCs in their Tier-1 modules across multiple vehicle programs.

Last verified September 2026. Is this your company? Request a correction.