ROHM Semiconductor, styled as ROHM, is a Japanese electronic parts manufacturer based in Kyoto, Japan. The company was originally incorporated as Toyo Electronics Industry Corporation by Kenichiro Sato on September 17, 1958. The name was later changed to ROHM in 1979 and then to ROHM Semiconductor in January 2009. ROHM is known for its extensive range of semiconductor and electronic component products, which are crucial in various industries including wireless, computer, automotive, and consumer electronics.

ROHM Semiconductor was founded in 1958 as Toyo Electronics Industry Corporation. Initially, the company focused on resistors, with the name 'R.ohm' derived from 'R' for resistors and 'ohm,' the unit of resistance. Over the years, ROHM expanded its product line to include semiconductors, ICs, and other electronic components. Key milestones include the development of transistors in 1971, the establishment of various international subsidiaries starting from the 1970s, and the acquisition of OKI SEMICONDUCTOR Co., Ltd. in 2008. In 2010, ROHM started mass production of the world's first SiC DMOSFETs and has since continued to innovate in power and analog technologies.

ROHM's core competencies include its integral technologies, vertical integration as an integrated device manufacturer (IDM), a wide range of products, and a strong customer-oriented approach. The company excels in power and analog technologies, particularly in the development of SiC devices, which offer significant advantages in energy savings and miniaturization. ROHM's engineers have in-depth knowledge of analog technologies, enabling the company to provide optimal designs and advanced elemental and integral technologies.

ROHM Semiconductor is a leading manufacturer in the semiconductor industry, having been among the top 20 semiconductor sales leaders through 2012. The company's products are widely used in various sectors, including smartphones, PCs, electric vehicles, and home appliances. ROHM's global presence, with production facilities and subsidiaries in multiple countries, further solidifies its market position.

ROHM's complete product catalog includes various categories such as Memory ICs, Amplifiers & Linear ICs, Power Management ICs, Clocks & Timers ICs, Switch, Multiplexer, & Logic ICs, Data Converter ICs, Optical Switches, Sensors & MEMS, Display Drivers, Motor/Actuator Drivers, and Interface ICs. The company also offers a range of discrete semiconductors, LEDs, and laser diodes.

While specific well-known clients are not explicitly listed, ROHM's products are used in a variety of industries and by numerous major companies in the wireless, computer, automotive, and consumer electronics sectors. The widespread use of ROHM's components in these industries suggests a broad client base.

ROHM has several related companies and subsidiaries, including Lapis Semiconductor Co., Ltd., ROHM Apollo Co., Ltd., ROHM Mechatech Co., Ltd., and various international subsidiaries such as ROHM Semiconductor (China) Co., Ltd., ROHM Korea Corporation, and ROHM Integrated Systems (Thailand) Co., Ltd..

ROHM's headquarters is located at 21 Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585 Japan. The contact details include:
Tel: +81-75-311-2121
Fax: +81-75-315-0172

For other locations and contacts, refer to the detailed list on the ROHM website).

ROHM Semiconductor Official Website