On March 6, 2026, Denso, a Japanese automotive parts behemoth, formally extended a comprehensive acquisition proposal to semiconductor manufacturer Rohm. The transaction value is set to soar up to 1.3 trillion yen (equivalent to approximately RMB 56.956 billion or USD 8.3 billion). Should the deal materialize, it will mark the largest acquisition within Japan's semiconductor sector in recent memory, propelling a significant consolidation in Japan's power semiconductor industry.

Previously, Denso had already secured a nearly 5% stake in Rohm through collaborative efforts. Now, it aims to acquire the remaining shares via a tender offer (TOB). Rohm posted a net loss of 50 billion yen in fiscal year 2024, marking its first deficit in 12 years. Although it is projected to achieve a profit of 10 billion yen in fiscal year 2025, its path to profitability recovery remains fraught with challenges.

If the acquisition is successful, Denso will leverage Rohm's technological prowess in power semiconductors and analog chips. This will expedite Denso's vertical integration strategy, enhance production capacity for next-generation power semiconductors, and facilitate the design of "brain-level" chips tailored for autonomous driving. Concurrently, this strategic move will transition Japan's power semiconductor industry from a model of "collaborative synergy" to one of "merger and integration," enabling it to better counter global competitive pressures, especially in light of the burgeoning rise of Chinese firms.