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Common Mode Choke

Common Mode Chokes provide significant advantages in electronic circuits. They effectively suppress electromagnetic interference and radio frequency interference, ensuring clean signal transmission and improved signal integrity. With high inductance and low resistance, these high current common mode chokes minimize energy loss and maintain system efficiency. 


As a leading high current common mode choke manufacturer, Founded in 1989, our company has a workforce of 300 staff and workers, including 600 technicians, covering an area of 13,000 square meters. We are committed to maintaining superior product quality through advanced equipment. As a leading common mode choke manufacturer, specializing in wirewound resistors, inductors, transformers, fuses, and other electronic components, it produces over 200 million pieces annually. 

  • UU Type Common Mode Choke

    SQ2418

    ■ A long history (27years) on producing UU Type Common Mode Choke!■ True factory with Factroy direct price!■ Fastest Lead Time■ Low Minimum order■ Regular purchase with competitive prices and reliable supply ■ Warranty is At Least 2 years■ New Original & PB Fr...
  • Common Mode Choke-SQ2418 (Horizontal Type)

    SQ2418

    ■ Core specification: SQ2418; horizontal type■ Combined with various packaging methods;■ Rated voltage: AC/DC 250V;■ Insulation withstand voltage: AC1.5kV 60sec;■ Operating temperature range: -25℃~+125℃■ Storage temperature range: -25℃~+100℃■ Applicable power range...
  • Common Mode Choke-SQ2418 (Vertical)

    SQ2418

    ■ Core specification: SQ2418; vertical■ Combined with various packaging methods■ Rated voltage: AC/DC 250V■ Insulation withstand voltage: AC1.5kV 60sec■ Operating temperature range: -25℃~+125℃■ Storage temperature range: -25℃~+100℃■ Applicable power range: 200-500W
  • Common Mode Choke-SQ2820 (Vertical)

    SQ2820

    ■ Core specification: SQ2820; vertical■ Combined with various packaging methods■ Rated voltage: AC/DC 250V■ Insulation withstand voltage: AC1.5kV 60sec■ Operating temperature range: -25℃~+125℃■ Storage temperature range: -25℃~+100℃■ Applicable power range: 500-1000...
  • Common Mode Choke-SQ3224 (Vertical)

    SQ3224

    ■ Core specification: SQ3224 vertical■ Combined with various packaging methods■ Rated voltage: AC/DC 250V■ Insulation withstand voltage: AC1.5kV 60sec■ Operating temperature range: -25℃~+125℃■ Storage temperature range: -25℃~+100℃■ Applicable power range: 500-1000W
  • Common Mode Choke-SQ3224 (Horizontal Type)

    SQ3224

    ■ Core specification: SQ3224 horizontal type■ Combined with various packaging methods■ Rated voltage: AC/DC 250V■ Insulation withstand voltage: AC1.5kV 60sec■ Operating temperature range: -25℃~+125℃■ Storage temperature range: -25℃~+100℃■ Applicable power range: 50...

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About Us

Changzhou Southern Electronic Element Factory Co., Ltd. is located in the city of Changzhou, which has a long history in Jiangsu Province. It is situated in the most active economic area in Yangtze River Delta Centre. The transport is very convenient. Expressway, Fast railways run though it. And it only takes one and half hours to reach Shanghai or Nanjing city. Airplane from here is through to major cities in China.
Changzhou Southern Electronic Element Factory Co., Ltd. was founded in 1989. After several years' development and effort, it has invested and opened up three subsidiary companies, in Yancheng city, Huai'an city in Jiangsu Province, and Lang'xi City in Anhui Province respectively.

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