Download Press Release - TDK Electronics Europe GmbH

Press Release
August 22 2006
TDK announces availability of new compact Power Supply Transformers in Europe
― Power Supply Transformers are up to 30% smaller than previous TDK products ―
TDK Corporation announced today that it will make available the new SRW2420EG, SRW2425EG
and SRW33EX in Europe. The transformers are up to 30% more compact and require up to 20%
less mounting space than earlier products with the same output. TDK has optimized the core
materials and core configurations used in standard power supply transformer components to
enable engineers to develop smaller and lighter products such as AC adaptors and audio-visual
devices. The transformers can be used in a variety of devices that require low-profile shapes,
compactness, and low-heat generation such as battery chargers, DC-DC converters, inverter
household appliances, LCD televisions, and plasma display panel televisions.
In order to make the transformers smaller and lighter, TDK selected core materials optimised for
specific applications and adopted innovative core configurations. This series of transformers uses
the new ferrite material, PC47, which allows the product to be smaller. Furthermore, by conducting
extensive magnetic circuit simulations, TDK adopted revolutionary elliptical cores in multiple output
transformers (such as those used in DVD players), reducing both the core and transformer body
volume and weight. This resulted in a reduction of 22.5% in the mounting area and 27% in volume.
In addition, by investigating optimal bobbin terminal core opening shapes and reducing the core
thickness, TDK minimized the weight of cores used in single output transformers. TDK has applied
for six different patents and design registrations with respect to the new core and bobbin
configurations.
The SRW2420EG, SRW2425EG, and SRW33EX are RoHS compliant. The SRW2420EG and
SRW2425EG can be used as multiple output transformers, and the SRW33EX as a low-profile
multiple output transformer. Wattage outputs vary between 25W and 65W, with flyback operating
frequencies between 25 and 40kHz. The SRW2420EG measures 30x28x25mm, the SRW2425EG
measures 30x28x30mm, and the SRW33EX measures 36x42x23mm.
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
Elke Stocks
TDK Electronics Europe GmbH
Corporate Planning/Marketing
Wanheimer Strasse 57
D-40472 Duesseldorf
Tel: +49 (0) 211 9077 183
Fax: +49 (0) 211 9077 298
Email: stocks@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