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Various size and shape of high frequency transformer, drive transformer,
current transformer which meets safety standards of each countries.
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| Developing new transformer with new technology such as high voltage transformer
and effective current resonance type transformer realized by resin-sealed
technology and special winding structure. |
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Designing power inductors for PFC, forward converter and chopper.
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| Producing high current transformer and coil with edgewise winding technology. |
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2010/1/1
Eiwa Co.,Ltd. merged into Sumida Electric Co.,Ltd. |
2009/4/21
Product information was renewed. |
2009/2/19
Web site Renewed. |
2009/2/19
Head office moved to Chuo-ku, Tokyo. |
2008/10/30
Became a subsidiary of Sumida Power Electronics Co., LTD.
(A Member of Sumida Group) |
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Sumida Electric Co.,Ltd.
Tokyo Office
Asahi Building, 3-12-2, Nihonbashi, Chuo-ku, Tokyo, Japan, 103-002
Tel 03-5202-7188 |
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Sumida Electric Co.,Ltd.
Nanao Technology Center
4127-3, Kamigodo, ko, Komoro-city, Nagano, Japan,384-0811
Tel 0267-23-2501 |
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Sales office 
