Sumida Through the Decades











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Late 1940s - 1950s
Where Our Story Begins

1950s_11948: Ichiro Yawata, founder of Sumida, began the manufacturing of coils in Funabashi, Chiba Prefecture in Japan hiring only three to four workers living nearby.

May 1950: Sumida Electric Shoukai was started in Tokyo's Sumida ward where Ichiro Yawata was born and raised.

January 1956: Sumida Electric Shokai was incorporated and renamed as Sumida Electric Manufacturing Co., Ltd.

Antenna & Tuning CoilSumida was renowned among the foremost antenna and tuning coil makers in the vacuum-tube radio era from as early as the 1940s.

When the transistor age came in the 1950s, antenna coils and tuning coils became too big for radios. To solve this, Sumida helped by developing a series of drum cap IFT and RF coils for the market. With these smaller coils, radio units could be made smaller and soon after, portable radio units became best-sellers in the market.

 Drum Cap IFT & RF Coils

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Expansion in Japan

1960s_1December 1961: Moved head office and plant to Kanamachi in Katsushika ward ,Tokyo
June 1963: Company name changed to Sumida Electric Co., Ltd.
October 1966: A manufacturing plant was built in the city of Soma in Fukushima

1960s_2In the 1960s, cumbersome reel-to-reel recorders were replaced by compact cassette tape recorders. Sumida rode on this wave of new technology and launched one of the smallest bias oscillation coils utilising knowledge gained from manufacturing IFT and RF coils. These mini coils helped compact cassette tape recorder manufacturers make sleeker and smaller products.

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Testing the Waters Overseas

1970s_11970s: Started selling IFT coils for radio, TV and radio cassette recorder
October 1971: Established the first overseas subsidiary in Taiwan
July 1974: Sumida Electric (H.K.) Company Limited was incorporated in Hong Kong

In the 1970s, the battery-operated hand-held calculator was invented. Sumida helped drive this product innovation by serving as a main supplier of DC-DC converter transformers to power vacuum fluorescent display (VFD) tubes.

DC-DC Converter Transformers

Anticipating that Dolby noise reduction system would become a common feature for FM radios, Sumida again helped accelerate product change in radio technology by designing and building Dolby noise filters.

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Expansion into China

Panyu FactoryEarly 1980s: Started production of power inductors for 8mm video cameras
October 1984: Began outsourcing operations at Panyu factory in Guangdong Province in China
August 1988: Sumida shares registered to be traded over-the-counter


The 1980s was the period of rapid expansion for Sumida. A wide range of new and innovative products such as hammer coils for dot matrix printers and SMD-type DC-DC converter transformers were introduced.
Sumida was amongst the first in the industry to provide off-the-shelf pin-types in full series providing a wide range of choice in terms of size and inductance. These off-the-shelf inductors helped engineers with making their circuit designs simpler.


Satellite broadcasting also boomed during this time. Sumida seized the opportunity and turned itself into one of the key makers of helical coils (the most critical component for satellite signal reception) for satellite dishes.

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Entry into the Automotive Market

1990s_1-4Early 1990s: Started production of anti-lock braking system (ABS) coils for automobiles
March 1992: Shigeyuki Yawata was appointed President taking over from Ichiro Yawata
December 1992: Dong Guan Sumida Electric (Taiping) Company Limited established in China's Guangdong Province
October 1998: Moved the headquarters to Ningyo-cho in Nihonbashi, Tokyo
December 1998: Sumida Electric Co., Ltd., listed on the Second Section of the Tokyo Stock Exchange

SMD Type Power InductorsLeveraging our strengths in off-the-shelf Pin-type Converters and technology gained from the SMD-type DC-DC converters, in the 1990s, Sumida started producing SMD-type power inductors and soon became the leader in the inductor market.

SMD Type Power Inductors

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Sumida listed on the First Section of the TSE & Further Expansion into New Markets

2000s_1June 2000: Sumida listed its shares publically on the First Section of the Tokyo Stock Exchange (TYO: 6817).
July 2000: Technical Center (M-Laboratory) was opened in Minami-Sendai
July 2008: SUMIDA ELECTRIC (GUANGXI) CO., LTD. was incorporated in Guangxi Province in China.

Through the early adoption of ‘A Company with Committees System’ corporate governance style in Japan in 2003 and the designation of English as the official company language in 2002, Sumida set precedence in becoming a leader in global business expansion amongst peers in Japan.

During this time Sumida sought expansion in Germany and Japan through a series of M&A activities – acquiring Stelco GmbH, VOGT electric AG & Panta GmbH in Germany; and Eiwa Co., Ltd, Mostec Co., Ltd. and Concord Co., Ltd. in Japan.

These acquisitions served to strengthen Sumida’s product offerings through achievement of global synergies and increased access into newly established markets.

Further development into the automotive and entry into the industrial market set out the foundations for the foreseeable course of Sumida’s business development in the 21st century.

Please select from the following market segments to view more about our business:

Automotive Electronics Consumer Electronics Industrial Electronics

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Development in the Automotive Electronics Market

The first ten years of the 21st century proved to be a successful and fast-growing period for Sumida. Strong growth was seen in the automotive market, the consumer electronics market and with inductor products.

Sumida further expanded its presence in the automotive market by starting to provide a wide range of automotive components for a variety of vehicular applications, including keyless antenna coils, fuel injection coils, ABS coils, TPMS antennas, transmission coils, suspension coils, immobilizer coils.

Through these efforts, Sumida soon became a market leader for products such as ABS coils and keyless entry antenna modules.

Automotive Market

2000s Consumer Electronics Industrial Electronics ↑ back to top

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 Development in the Consumer Electronics Market

2000s_3In the consumer electronics market, our rich experience with SMD-type DC-DC converter manufacturing enabled Sumida to embark on tackling the emerging market of CCFL backlights. During 2004 to 2005, Sumida was the biggest high-end CCFL backlight module supplier for the notebook PC market.

The Age of Smartphones & the Internet
2000s_4With the emergence of smart phones in the early 2000s, Sumida rode on this new wave of market demand for lower profile, smaller sized components by designing a two-in-one inductor (inductor module) leveraging our strength in SMD technology.
These two-in-one inductors enable smart phones to keep their power supply units small resulting in sleek and thin devices.

WCDRH, EP-1311, CPUDL328

2000s Automotive Electronics Industrial Electronics ↑ back to top

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Development in the Industrial Electronics Market

2000s_6SUMIDA entered the industrial market and started to provide a wide range of industrial components & modules for a variety of industrial applications.

Creativity and know-how enabled us to develop, in close cooperation with our customers, individual and market-leading solutions.

Our long term experience in the field of inductive components and modules enabled Sumida to become the market leader in some of the industry segments, especially with antennas for RFID and reactors for PV inverters.

Key Applications:
  • Solar & wind power generation
  • PV inverters for electricity generation
  • control systems for industrial robots
  • EV chargers
  • Signal
  • Security
  • RFID
  • Fork lifts
  • Medical devices
  • Hybrid construction machinery
  • Power line communication
2000s Consumer Electronics Automotive Electronics ↑ back to top 


Apr 2010: Production expansion of Rotor Position Sensors for use in hybrid-electric vehicles
Feb 2014: Sumida Power Technology Co., Ltd. established in Nagano, Japan
Sept 2015: SPT Certified ISO13485 ”Medical ISO” for the first time within Sumida Group

Our Product Portfolio
Sumida continues to offer a wide range of new and innovative products for a variety of technologies and for the key applications of the decade,  e.g.  rotor position sensors for hybrid EVs, RFID IC tags, integrated power modules, wireless charging coils, isolation transformers for medical equipment, magnetic materials, flexible board connections, PV inverters for solar power.

Industrial Market

Looking ahead, we will continue to innovate and evolve to address the changing needs of the industry. It is our goal to offer people better life though better products.

Our Global Network
During this decade Sumida further expanded its manufacturing network with the addition of 2 plants in Vietnam, the Ji’An plant in Jiangxi Province and a new building in the Panyu plant located in Guangdong Province, China.

Global Map

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SUMIDA AG (former VOGT) Stelco & Panta EIWA, Mostec & Concord

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SumidaAG_11934 | The History Begins
On February 8, 1934 Hans Vogt founded the Company „Hans vogt – Laboratory for High Frequency in Berlin.
He developed a new type of a tiny frequency coil which he called peas coil. Therefore he developed a magnetic core of iron powder (Ferrocart).

Erlau1942 | Relocation to Erlau
Since the factory in Berlin was increasingly endangered by bombing attacks during the war, Hans Vogt went to Erlau with the production segment sintered iron.

Ferrite Production1950 | Beginning of Ferrite Production
In the 50s the production of Ferrite materials begun. Gradually, the production of soft magnetic materials were expanded and a comprehensive offer of coils for the radio industry were developed.

1960 + 1970 | Radio and Television Industry is Booming
In the 60s and 70s Vogt developed a wide range of new materials and components for typical products of the consumer electronics like autoradios, portable radios and various televisions. New iron powder materials with high permeability were created for the power electronics in color tv’s.

1985 | Vogt Becomes a Stock Corporation
Vogt LogoIn the 80s the demand for coils, transformers and inductors increased sharply because the switching power supply technology was used more and more – not only in consumer electronics also in other application areas such as lighting equipment, household appliances and telecommunications. For financing it’s growth, the shareholders decided to convert the company into a Vogt AG. The first issue of Vogt shares took place in March 1986.

Automotive Products1990 | Automotive & Manufacturing Services
With inductive Sensors and Antennas for immobilizer, Vogt succeeded in entering the automotive market. Therefore development processes and quality management were early adapted to the increased demands of the automotive business.

Through the acquisition of Letron GmbH in Lehesten, a manufacturing plant of Grundig in Miesau, the FUBA Printed Circuits GmbH and a large electronics factory of Siemens in Witten, Vogt becomes one of the largest contract manufacturer of electronics in Europe within one decade.

Vogt2000 | Consolidation
By a dramatic decrease of the telecommunications market and high charges through uncompetitive capacity the Vogt group ran into financial difficulties in the first years after 2000. Through a tough cost reduction program, a drastic reduction and a return to sustainable key business, the turnaround succeeded until 2005.

Sumida AG2006 | VOGT Was Acquired by a Japanese Company
In this year, the japanes SUMIDA Corporation became main shareholder of VOGT electronic AG. Three years later a domination agreement was concluded and the shares of VOGT electronic were delisted.

In 2009, Vogt was renamed in SUMIDA AG. Since then also most of the other group companies include the name SUMIDA in their company name.

Manufacturing2010 | Recovery After the Crisis
After the financial crises by the end of 2008 the global demand for cars dropped dramatically. The business of SUMIDA declined significantly. By the unexpectedly fast recovery SUMIDA benefited from the strong demand for xenon igniters and keyless Entry Antennas.

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Former Stelco & Panta GmbH

 Stelco GmbH    Panta GmbH
1999 Foundation of STELCO GmbH and Certification according ISO 9001   1993  Founding of Panta GmbH
2002 Move to new factory building in the Kerschensteinerstrasse, Neumarkt/Oberpfalz   2004  Moved to new plant 4,500qm
2004 Certification according ISO TS 16949:2002   2006  Acquisition by Sumida
2005 Acquisition of STELCO GmbH by SUMIDA   2008  Founding of Panta Romania SRL
2009 Renamed from STELCO GmbH in SUMIDA Components GmbH   2009 Renaming to: SUMIDA flexible connections GmbH
2012 Certification according ISO 14001   2012  Production Facility in Shanghai

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Eiwa, Mostec & Concord

Eiwa Logo
1972 Established in Ota-ku,Tokyo
1983 “Midorigaoka Plant” was established in Komoro City, Nagano Pref. Currently “SUMIDA Nagano Technology Center”
1989 “EIWA Thailand Co.,Ltd” was established in Thailand as an overseas subsidiary company.
1991 “Ohata Plant” was newly established in Ohata-Machi, Aomori pref. Currently “SUMIDA Aomori Plant”
2008 SUMIDA acquired EIWA’s stock.
2010 EIWA merged into SEC.
  Concord Logo
1970 Established at Saku City, Nagano Pref. “Sanada plant” was newly established in Ueda City, Nagano Prefecture
Mainly expanding Coil / Transformer business for industry and medical application
2009 SUMIDA acquired CONCORD’s stock.
2010  CONCORD merged into SEC.
1970 Established at Tanabe City, Kyoto Pref. Utilizing it’s feature, Edgewise coils are used for solar/wind power generators, HV/EVs, and aircrafts.
MOSTEC has registered more than 40 patents mainly for edge-wide winding technology.
2008 SUMIDA acquired MOSTEC stock.
2010 MOSTEC merged into SEC.


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