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EMC components: World’s smallest common-mode filter for high-speed interfaces

  • Footprint 75 percent smaller than existing products
  • High 7.0 GHz cutoff frequency
EMC components: World’s smallest common-mode filter for high-speed interfaces

July 5, 2012

TDK Corporation has developed the world’s smallest* common-mode filter, which measures in at only 0.45 mm x 0.30 mm x 0.23 mm and is 75 percent smaller than current 0806 filters (IEC). Besides its miniature dimensions, the new TCM0403S-350-2P thin-film common-mode filter offers excellent performance. With a high cutoff frequency of 7.0 GHz the filter suppresses common-mode noise without distorting high-speed differential signals. It is thus compatible with various high-speed interfaces such as MIPI, USB 2.0, and USB 3.0. The excellent common-mode attenuation at 2.4 GHz improves the wireless LAN reception sensitivity in smartphones, conventional mobile phones and other compact portable devices. Mass production will begin in July 2012.

The milestone in miniaturization was realized using TDK’s leading-edge thin-film patterning technology combined with compact, high-precision coil pattern and terminal formation processes. Thanks to its much smaller footprint, the new filter supports the high-density mounting of electronic components and contributes to significant space-saving in electronic devices.

  • * As of June 2012, according to TDK investigations

  • MIPI: the Mobile Industry Processor Interface is an open standard supported by the MIPI Alliance, which consists of nearly 200 members companies in the mobile device industry.
Main applications
  • Smartphones, conventional mobile phones, and other mobile devices
  • Electronic devices with high-speed interfaces such as MIPI, USB 2.0, and USB 3.0
Main features and benefits
  • Footprint is approximately 75 percent smaller than current standard products with a footprint of 0.85 mm x 0.65 mm.
  • High 7.0 GHz cutoff frequency for compatibility with high-speed interfaces
  • Excellent common-mode attenuation at 2.4 GHz for improved wireless LAN reception sensitivity
Key data
Type Dimensions
Cutoff frequency
DC resistance
TCM0403S-350-2P 0.45 x 0.30 x 0.23 35 (typical) 7.0 (typical) 3.0
About TDK Corporation

TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's current product line includes passive components, magnetic application products as well as energy devices, flash memory application devices, and others. TDK today focuses on demanding markets in the areas of information and communication technology and consumer, automotive and industrial electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2012, TDK posted total sales of USD 9.9 billion and employed about 79,000 people worldwide.

About TDK-EPC Corporation

TDK-EPC Corporation, a TDK group company, is a leading manufacturer of electronic components, modules and systems, headquartered in Tokyo, Japan. TDK-EPC was founded in 2009 from the combination of the passive components business of TDK and the EPCOS Group. The portfolio includes ceramic, aluminum electrolytic and film capacitors, ferrites and inductors, magnets, high-frequency components such as surface acoustic wave (SAW) filter products and modules, piezo and protection components, and sensors. The company markets the product brands TDK and EPCOS.

Contacts for regional media
Region Contact Phone Mail
Japan Mr. Yoichi Osuga TDK Corporation
Tokyo/ Japan
+813 6778-1055
ASEAN Ms. Tomoko Kameda TDK Singapore (Pte) Ltd.
+65 6273 5022
Greater China Ms. Clover XU TDK China Co., Ltd.
Shanghai/ China
+86 21 61962307
Europe Mr. Frank Trampnau TDK Electronics Europe GmbH
Duesseldorf/ Germany
+49 211 9077 127
America Ms. Sara M. Reynoso TDK Corporation of America
Irving, TX/ USA