RIKA Denshi Co., Ltd.
Corporate brand
UnclaimedJapanese precision manufacturer of semiconductor test contact probes, IC sockets, probe cards and precision-machined components.
Last updated September 27, 2026
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Overview
RIKA Denshi Co., Ltd. is a Japanese precision-parts manufacturer headquartered in Minato-ku, Tokyo, whose business centers on semiconductor inspection systems and the precision tooling that supports semiconductor manufacturing. The company traces its origins to 1958, when its predecessor, Tokyo Quartz Glass Laboratory (Yugen Kaisha Tokyo Sekiei Garasu Kenkyusho), was established; the present operating company, Rika Denshi Kogyo Co., Ltd., was incorporated in October 1961. The group parent was renamed Rika Denshi Co., Ltd. in September 1990. The company describes its core strength as an integrated production system in which sales, development and manufacturing work as one, supported by ultra-high-precision machining applied across its entire product range. Its product portfolio includes contact probes, IC sockets, probe cards, fixture jigs, printed-circuit board design and fabrication, and precision-machined parts. These are used in semiconductor manufacturing equipment and electronic-component inspection systems. RIKA Denshi has built a substantial international footprint. It established Taiwan Rika Denshi in 1989, Rika Denshi Singapore in 1990, Rika Denshi America in 1991, a Malaysia branch in 1995 that became Rika Denshi Malaysia Sdn Bhd in 2004, and Shanghai Zhoud Electronic Trading in 2003. Related companies Rika Electronics International Asia Pacific and Rika Electronics (Thailand) were set up in 2008. In Japan, the company operates its Tokyo head office and sales office, a Kyushu office and Kumamoto factory, a Nagano office and Fujimi factory, and an Osaka sales office. Its head office moved to Shibakoen, Minato-ku in January 2025. RIKA Denshi remains a privately held Japanese company. Its representative director is Yasuko Toda, and its stated capital is 100 million yen. The company continues to present itself as a pioneer in the electronics industry, emphasizing ongoing investment in technical and development capabilities to meet cutting-edge market needs, and it exhibits at industry events such as the Kyushu Semiconductor Industry Exhibition.
History
RIKA Denshi's history begins in April 1958 with the establishment of its predecessor, Yugen Kaisha Tokyo Sekiei Garasu Kenkyusho (Tokyo Quartz Glass Laboratory). In October 1961 the operating company Rika Denshi Kogyo Co., Ltd. was incorporated. In February 1982 the current head office building was constructed, consolidating the head office and Tokyo factory at one site. International expansion began in the late 1980s and continued through the 1990s. Taiwan Rika Denshi Co., Ltd. was established in March 1989, followed by RIKA DENSHI SINGAPORE PTE LTD. in March 1990. In September 1990 the group parent company changed its name to Rika Denshi Co., Ltd. RIKA DENSHI AMERICA INC. was established in June 1991, and in November 1991 the Kyushu office and Kumamoto factory were opened while the Kyushu sales office was relocated. In March 1995 a Malaysia branch was established under RIKA DENSHI SINGAPORE PTE LTD. Domestic manufacturing capacity expanded in the mid-1990s: the Fujimi factory was opened in Nagano Prefecture in March 1996, and in October 1997 the Nagano office was opened, the Fujimi factory was relocated, and the Nagano sales office was established. In August 2000, in the year of RIKA DENSHI AMERICA INC.'s tenth anniversary, a new factory was completed. In December 2000 the Kyushu office's Kumamoto factory expansion was completed and ISO 9001 certification was obtained. Further internationalization followed. Shanghai Zhoud Electronic Trading Co., Ltd. was established in December 2003. In August 2004 the Malaysia branch of RIKA DENSHI SINGAPORE PTE. became independent as RIKA DENSHI MALAYSIA SDN BHD. In 2005 all RIKA Denshi sites obtained ISO 14001 certification. In September 2008 two related companies were established: RIKA ELECTRONICS INTERNATIONAL ASIA PACIFIC PTE LTD. and RIKA ELECTRONICS (Thailand) Co.,Ltd. In December 2012 RIKA DENSHI AMERICA INC. established a West Sales Office and Solution Technology Center (STC) in Silicon Valley, California. In March 2016 the head office and Tokyo sales office moved to Mita, Minato-ku. In January 2025 the head office and Tokyo sales office moved again, to Shibakoen, Minato-ku. Throughout this period the company has continued to develop new probe technologies, including a palladium alloy cutting barrel probe announced in 2024, and to release catalogs for non-magnetic and Kelvin probes.
Predecessor Yugen Kaisha Tokyo Sekiei Garasu Kenkyusho (Tokyo Quartz Glass Laboratory) established.
Rika Denshi Kogyo Co., Ltd. incorporated.
Current head office building constructed; head office and Tokyo factory relocated and consolidated.
Taiwan Rika Denshi Co., Ltd. established.
RIKA DENSHI SINGAPORE PTE LTD. established.
Group parent company renamed Rika Denshi Co., Ltd.
RIKA DENSHI AMERICA INC. established.
Kyushu office and Kumamoto factory opened; Kyushu sales office relocated.
Malaysia branch established under RIKA DENSHI SINGAPORE PTE LTD.
Fujimi factory opened in Nagano Prefecture.
Products and positioning
Precision manufacturer and pioneer in semiconductor inspection systems, offering integrated sales-development-manufacturing production with ultra-high-precision machining.
Contact probes
Precision probes used in semiconductor and electronic component testing.
IC sockets
Sockets for electronic component inspection systems.
Probe cards
Probe cards for semiconductor wafer testing.
Fixture jigs
Precision fixtures and jigs for manufacturing and testing.
PCB design and fabrication
Design and fabrication services for printed circuit boards.
Precision-machined components
Ultra-high-precision machined parts for semiconductor manufacturing equipment.
Sources5 sources
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