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TDK Develops Industry's Smallest^* 0605-Type Thin-Film Common Mode Filter

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TDK Develops Industry's Smallest 0605-Type Thin-Film Common Mode Filter

February 6, 2008

TDK Corporation announced today that it has developed a 0605-type thin-film common mode filter-the industry's smallest-for EMI¹ countermeasure use on high-speed data transmission lines.

The new filter measures 0.65 mm (L) × 0.50 mm (W) × 0.30 mm (T) in size, achieving about a 50% reduction in volume and 35% decrease in mounting area compared to TDK's current product (the TCM1005, which measures 1.00 mm × 0.50 mm × 0.42 mm) and making possible substantial miniaturization of devices. In addition, the new filter has an even lower profile than earlier components, supporting the creation of optimal use environments for mobile electronic devices such as mobile phones and portable digital music players.

As electronic devices rapidly become more compact even as they incorporate more advanced functions, demands are increasing for smaller electronic components and higher mounting densities. In addition, functions for high-speed transmission of large data volumes such as high-quality images and video are increasing. As a result, creating noise countermeasures that do not adversely affect signal quality on the high-speed differential transmission lines used to convey these various types of data has become an urgent issue.

The new filter employs TDK's thin-film magnetic head technologies (including original fine pattern conductor formation and film formation technologies), which have an established track record at the industry's highest levels, to respond to these demands. As a result, the filter offers considerable miniaturization as well as outstanding transmission characteristics and noise control that does not have an adverse impact on high-speed differential transmission line signals.

* As of February 2008, according to TDK investigations.

Glossary

EMI: Electromagnetic interference.
EMI countermeasures refer to measures to prevent electronic devices themselves from emitting electromagnetic noise. In contrast to EMI countermeasures, electromagnetic susceptibility (EMS) countermeasures prevent interference from external sources of noise. The two types of measures are together referred to as electromagnetic compatibility (EMC) countermeasures.

Main Applications

EMI countermeasures on high-speed data transmission lines in mobile electronic devices such as mobile phones and portable digital music players.

Main Features