Sanada KOA Corporation

Sanada KOA Corporation is a Japanese electronic components manufacturer based in Ueda, Nagano. It was established in January 1939 as Denki Kagaku Kenkyusho Co., Ltd., renamed Tama Denki Kogyo Co., Ltd. in 1948, and adopted its current name in April 2014. Since 2001 it has been a wholly owned subsidiary of KOA Corporation. The company manufactures resistors and other electronic components, including metal oxide varistors, temperature sensor elements, space-use reliability-assured resistors, high-voltage resistors, sensor units, and general-purpose and high-precision metal film resistors.

Sanada KOA Corporation traces its origins to January 1939, when Denki Kagaku Kenkyusho Co., Ltd. was established. In October 1948 the company changed its name to Tama Denki Kogyo Co., Ltd. It opened the Ueda Plant in March 1957 and the Meguro Plant in December 1958. In March 1960 it succeeded in developing Japan's first vacuum-deposition metal film resistor (MF). In May 1975 it developed and began selling an automotive level indicator switch (LIS). In June 1976, responding to a request from the National Space Development Agency of Japan, it developed and obtained certification for a reliability-assured metal film fixed resistor (RNR) and began sales. In October 1980 it began selling metal oxide varistors (MOV). In June 1982 it opened the Sanada Plant. In June 1987 it developed and began selling multilayer chip varistors (MCV). In December 1988 its shares were registered over-the-counter with the Japan Securities Dealers Association, and capital was increased to 1,283.5 million yen. In February 2000 it obtained ISO14001 certification. In August 2001, through a share exchange with KOA Corporation, it became a wholly owned subsidiary of that company. In April 2002 its sales division was integrated into KOA Corporation. In July 2002 its head office function was moved from Meguro to the Fuchu facility. In June 2004 its display systems division was spun off as Tama Fine Opt Co., Ltd., which became a wholly owned subsidiary of Omron Corporation through a business transfer. In September 2006 capital was reduced to 100 million yen. In August 2010 it obtained ISO/TS16949 certification. In October 2013 the 'Sanada no Sato' site was completed. In April 2014 the company changed its name to Sanada KOA Corporation and moved its registered head office to the Sanada no Sato address. In June 2015 consolidation of the two sites, Sanada no Sato and the Fuchu facility, was completed. In May 2018 it obtained IATF16949 certification. In May 2024 it developed and began selling a multilayer chip varistor (NV73S).

Contributes to the development of electronics and the realization of a prosperous society through distinctive products centered on technological capability.

• Temperature sensors

  Includes surface-mount, radial, probe, and custom types.

• Chip varistors

  Includes general-purpose and automotive types.

• Space development components

  Includes JAXA-certified components and custom support.

• Substrate manufacturing support services

  Test marketing stage service.

1. 1真田KOA株式会社 | KOAグループsanadakoa.co.jp
2. 2沿革 | 真田KOA株式会社sanadakoa.co.jp
3. 3製品とサービス | 真田KOA株式会社sanadakoa.co.jp
4. 4会社概要 | 真田KOA株式会社sanadakoa.co.jp
5. 5Sanada KOA Corporation (Japan)wikidata.org