ROHM Co., Ltd. (ROHM) and Zhenghai Group Co., Ltd. (Zhenghai Group) have signed a joint venture agreement to establish a new company in the power module business.


The new company, “HAIMOSIC (SHANGHAI) CO.,LTD.” is scheduled to be established in China in December 2021, and will be owned 80% by Shanghai Zhenghai Semiconductor Technology Co., Ltd. (Zhenghai Semiconductor) of Zhenghai Group and 20% by ROHM.

The new company will engage in the joint venture business of development, design, manufacturing and sales of power modules using silicon carbide (SiC) power devices, with the aim of developing a power module business that is ideal for traction inverters and other applications in new energy vehicles. The agreement enables to develop highly efficient power modules by combining the inverter technology of the Zhenghai Group companies, the module technology of both companies, and ROHM's cutting-edge SiC chips.

The module products to be developed through the new company are already scheduled to be used in electric vehicles, and mass production will begin from 2022.