Download Press Release - TDK Electronics Europe GmbH

Press release
For Immediate Release
16 October 2006
TDK launches Noise Reduction Coil for Power Supplies with
improved inductance
-New Noise Reduction Coil is 38% smaller than existing coils with the same
characteristics and shows a 60% improvement in characteristics compared to
coils of the same size-
TDK Corporation has developed and launched a high-performance commonmode
choke coil for use in power supply noise reduction. TDK has achieved this
by developing a new ferrite material with high magnetic permeability 1 and
improved high-frequency characteristics. The high-frequency characteristics
provide improved noise reduction, while the high magnetic permeability has
allowed TDK to reduce the component’s size by 38%. TDK has also optimised
the shape of the choke coil, as well as significantly improving the inductance
characteristics. In addition, the rated current is approximately 26% higher. The
new coils of the HF and TF Series are ideal for devices that require high rated
current such as air conditioners, lighting devices, PC, and liquid crystal
televisions as well as information industry equipment
Common mode choke coils are key components in power supply noise reduction
and therefore a major factor in determining the size of power supplies. As
electronic devices become smaller and incorporate advanced functions there is
increased demand for power supplies to shrink and exhibit higher performance.
Coils can be miniaturized by using materials of high magnetic permeability.
However, miniaturization while maintaining enhanced performance has been
difficult in the past due to the fact that permeability of materials drop off at
1
Magnetic permeability: An indication of the ability of magnetic flux to pas through a material. The higher the permeability
(i.e., the easier it is for magnetic flux to pass through) of ferrite materials used in choke coils and other components, the
higher the inductance wand the greater the noise reduction effects.

frequencies below 100kHz and the high-permeability characteristics cannot be
maintained at frequencies higher than 150kHz where noise control starts.
TDKs new ferrite material with high magnetic permeability and improved highfrequency
characteristics significantly solves these problems. Combined with the
reduction in volume and weight, substantially improved inductance characteristics
and rated current TDK’s new common-mode choke coil provides the benefits of
better noise reduction within a smaller design.
The new coils are RoHS compliant and comply with domestic overseas safety
standards for electronic products 2 .
Ends/
About TDK Electronics Europe GmbH
TDK is a recognised world leader in the design and manufacture of electronic
components. This position has been achieved through dedication to the development of
new materials, new products, advanced manufacturing processes, improvements in
product quality and exceptional customer service. Founded in Japan in 1935, TDK was
created with the aim of becoming the world’s first manufacturer of the magnetic material
ferrite. TDK’s European operations, head quartered in Duesseldorf, Germany, includes 7
regional sales offices, 2 R&D laboratories and 2 manufacturing centres. From these
bases and with the support of a wide distribution network, TDK provides more than just
access to components and technology.
For further information please contact
Frank Trampenau
TDK Electronics Europe GmbH
Corporate Planning/Marketing
Wanheimer Strasse 57
D-40472 Duesseldorf
Tel: +49 (0) 211 9077 127
Fax: +49 (0) 211 9077 298
Email: trampnau@tdk.de
Internet: www.tdk-components.de
Sarah Sambles
TKO Marketing Consultants Ltd
4 Lucastes Mews, Paddockhall Road
Haywards Heath
West Sussex
RH16 1HE
Tel: +44 (0) 1444 473 555
Fax:+44 (0) 1444 473 666
Email: sarah@tko.co.uk
2
Compliance with safety standards does not mean that the products have been approved or certified.