In March 2026, Japanese automotive components supplier DENSO formally submitted a full acquisition proposal to semiconductor manufacturer ROHM, with the transaction valued at approximately ¥1.3 trillion (around $8.2 billion). Should the deal materialize, the two companies would form a domestic Japanese powerhouse in the power semiconductor sector for electric vehicles (EVs) and data centers.

The groundwork for this move was laid well in advance. In May 2025, the parties announced a strategic semiconductor partnership to jointly develop analog semiconductors for EV sensors. By July of the same year, DENSO increased its shareholding from 0.3% to nearly 5%, completing an initial equity penetration. In February 2026, DENSO officially presented its full acquisition plan, prompting ROHM to establish a special committee to evaluate the offer. Both sides have confirmed that negotiations are underway, though no final decision has been reached.

Industry Context

Despite Japanese companies' traditional technological advantages in this domain, the rapid ascent of Chinese enterprises such as BYD in silicon carbide/SiC chips and autonomous driving system-level chips has plunged Japanese manufacturers into widespread overcapacity and price pressure. In fiscal year 2024, ROHM recorded a net loss of ¥50 billion, its first deficit in 12 years. Although the company projects a return to profitability with ¥10 billion in profit for fiscal 2025, significant challenges remain in restoring earnings capacity.

Japan's METI has explicitly urged industry restructuring to consolidate resources against global competition. Previously, the Japanese government encouraged joint ventures through substantial subsidies—such as partnerships between DENSO and Fuji Electric, and between ROHM and Toshiba—but the "fragmented" landscape never fundamentally changed. DENSO's direct acquisition bid signals a shift in integration strategy from "collaborative synergy" to "capital-driven consolidation," aiming to create a heavyweight player capable of competing with Chinese rivals.

Transaction Challenges and Implications

Despite clear strategic rationale, the deal faces multiple hurdles. First, ROHM's long-standing partnership with Toshiba may become complicated. In 2023, ROHM invested ¥300 billion to support Toshiba's privatization, and the two jointly received ¥129.4 billion in METI subsidies for equipment investment. However, after Toshiba planned to collaborate with a Chinese wafer manufacturer in August 2025—a move opposed by ROHM—the relationship developed cracks, providing DENSO with an acquisition window. Second, DENSO must balance its existing cooperative relationship with Fuji Electric to avoid supply chain conflicts.

Should this acquisition succeed, it will trigger a chain reaction in the global power semiconductor landscape: the Japanese market would shift from "dispersed competition" to "dominance by giants," directly challenging the market positions of Infineon, onsemi, and BYD Semiconductor, while accelerating the technological iteration and mass production of automotive-grade SiC, GaN, and other third-generation semiconductors.

CONEVO IC Components Distributor

CONEVO is an independent distributor of electronic components, specializing in core categories such as FPGA, MCU, DSP, power management ICs and MLCCs. Its services cover high-end manufacturing fields including aerospace, automotive electronics, industrial control, medical equipment and consumer electronics. The following are the selected IC models of CONEVO.

● LM317MKVURG3: A vehicle-grade adjustable linear voltage regulator from Texas Instruments (TI), supporting a wide output range of 1.25V to 37V and a load current of 1.5A, suitable for local voltage regulation solutions for automotive ECUs and industrial power supplies.

● TDA21240AUMA1: A dual-phase digital PWM controller from Infineon, specifically designed for high-performance GPUs and CPUs, meeting the strict power management requirements of data center servers and gaming graphics cards.

● MT48LC4M32B2TG-7: G: A 128Mb synchronous dynamic random access memory (SDRAM) from Micron, widely used in industrial control, network communication, and embedded storage systems in consumer electronic devices.

Website: www.conevoelec.com

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