Renesas Electronics

Renesas Electronics Corporation (Japanese: ルネサス エレクトロニクス株式会社, Hepburn: Runesasu Erekutoronikusu Kabushiki Gaisha) is a Japanese semiconductor manufacturer headquartered in Tokyo. It supplies embedded processors, analog, power and connectivity devices and related software for automotive, industrial, infrastructure and IoT applications. In 2025, Renesas ranked third worldwide in the microcontroller (MCU) market, behind Infineon Technologies and NXP Semiconductors. In the broader automotive semiconductor market, it ranked fifth in 2024 with a 7% share of global sales. Renesas Electronics began operations in April 2010 following the merger of NEC Electronics and Renesas Technology. NEC Electronics, which had been established in November 2002, was the surviving legal entity and was renamed Renesas Electronics Corporation when the merger took effect. Renesas Technology had been formed in 2003 by combining the non-DRAM semiconductor operations of Hitachi and Mitsubishi Electric. After severe operational and financial difficulties in the early 2010s, Renesas underwent restructuring backed by the state-supported Innovation Network Corporation of Japan (INCJ), and later expanded through acquisitions including Intersil, Integrated Device Technology (IDT), Dialog Semiconductor and Altium. In 2025, Renesas discontinued development of its own silicon carbide (SiC) power semiconductors and identified gallium nitride (GaN) as an area for concentrated investment. Its 2025 results included a ¥236.6 billion loss related to its financial exposure to Wolfspeed, contributing to a loss attributable to owners of the parent of ¥51.8 billion. In 2026, the company completed the transfer of its timing business to SiTime.