2015-2016
TDK Company Profile
English version
CONTENTS
TDK Technology
p03-04
Top message
p05-10
Innovation in
core technologies
P11-12
Research &
development
P13-14
For the future
Relations with Society
P31-32
Relation to
stakeholders
01
P33-34
History with
stakeholders
Business Spanning the Globe
P15-16
Global network
P35
Corporate
social
activities
Growing Markets and TDK Products
P17-18
P19-22
Business
@ a glance
P36
Awards from
society
Application ICT Network
P23-26
Application Automotive
P27-30
Application Industrial &
Energy
P37
Web contents
2015-2016 TDK Company Profile
02
Focusing on growth markets and developing
electronic components from the materials level
up, to support value creation by customers and
contribute to society
Takehiro Kamigama
President & CEO
Top
Mess
Corporate Motto
Contribute to culture and industry through creativity
Corporate Principles
“Vision”“Courage”“Trust”
Smartphones, big data, eco cars, green energy—these
any kind of electric or electronic equipment. Passive
home & health care segment, where customer
are some of the key concepts for the 21st century.
components include for example ferrite cores, coils,
companies of TDK increasingly demand parts with
With the aim of realizing such innovative ideas and
transformers, ceramic capacitors, sensors, and many
extremely small dimensions and ultra-miniaturized
responding to people's expectations, the field of
more. Harnessing technological know-how acquired and
modules.
electronics is constantly advancing and evolving. TDK is
perfected over the years in developing such components,
a major player in the electronic components sector,
TDK has also successfully brought products such as
TDK is active in some 30 countries around the world,
an area with an amazing pace of progress, driven by
magnetic heads, magnets, power supplies, and batteries
relying on about 100 major business sites. Both in
fierce global competition.
to the market.
production and in sales, overseas operations account for
TDK was founded in 1935 with the pioneering aim of
The wide product portfolio is one of the distinguishing
use of our global network in the areas of human
commercializing the magnetic material “ferrite”. The
characteristics of TDK. Currently, the company focuses
resources, technology, and production. This gives us the
company's driving force was to create something of
in particular on three areas that are expected to see
edge to speedily introduce unique, highly competitive
value that did not exist before, and thereby contribute to
further rapid growth in the future: ICT (Information and
products and holds the key to further sustained growth.
society. During its 80 year history, TDK has continued to
Communication Technology), automotive electronics,
create electronic components from the source materials
and the industrial equipment and energy sector.
more than 80 percent. We are committed to making full
level up, with particular emphasis on magnetic materials
As a global leader in the electronic
components industry, TDK will
starting from ferrite, and with a strong focus on
Smartphones are evolving towards higher communication
continue to take up the challenge
materials technology. As a result, we were able to offer
speeds, and the arrival of hybrid electric and electric
of providing our customers with
a host of unique and innovative electronic components
vehicles has meant that automobiles require ever more
electronic components that
to the world.
electronic components. In the energy sector, the
combine great originality and high
sage
next-generation power distribution concept known as
value, and so make a tangible
TDK's main product sector is the field of passive
the smart grid will undoubtedly drive a surge in demand
contribution to society as a whole.
components, which are fundamental building blocks for
for electronic components. Another focus area is the
World's first ferrite cores
2015-2016 TDK Company Profile
04
Innovation in
core technologies
1935
A pioneering university-generated venture company
The product power of TDK springs from its mastery of materials,
acquired in ever growing dimensions since the founding of the
company. Here we highlight some core technologies and the
resulting innovative developments made possible by taking
advantage of that strength.
Then
Now
Innovation
Core technologies
Founding of TDK
Tokyo Denki Kagaku Kogyo K.K., the forerunner of TDK, was founded in 1935 in
order to commercialize ferrite, an epoch-making magnetic material that had been
invented in Japan by Dr. Yogoro Kato and Dr. Takeshi Takei of the Tokyo Institute of
Technology. So TDK really was a pioneering university-generated venture company.
Four great world-class innovations by TDK ①
Materials technology with origins in ferrite
The oxide core catalog of ferrite products
from the time of TDK's foundation
Dr. Yogoro Kato (left) and Dr. Takeshi Takei (right)
The world's first ferrite cores
1930
Progress of wireless technology
Ferrite
1940
& Eco
Ferrite proves even more important in tackling energy
saving and environmental issues of the 21st century
Ferrite is an indispensable material in the world of electronics. It proves its
worth in a myriad of electronic devices surrounding us in daily life. For example,
it serves as core material for various transformers and coils, helps to implement
measures against noise, provides magnetic shielding, and is used in
electromagnetic wave absorbers. In this way, it also helps to save energy and
solve environmental issues.
Recognition as IEEE Milestone: TDK's efforts
influenced the world's technological history
The Institute of Electrical and Electronics Engineers (IEEE), an international
academic society relating to electricity and electronics, recognized the
"Development of Ferrite Materials and Their Applications" by the Tokyo
Institute of Technology and TDK as a historical achievement that has
contributed to the development of society and industry.
This was the 89th IEEE Milestone awarded worldwide since its
IEEE Milestone plaque
establishment in 1983 and the 10th in Japan.
05
Through the application of various electroceramic materials, starting with ferrite technology,
TDK has successfully created a wide range of electronic components and devices.
1966
Ferrite cores from TDK used extensively in
superheterodyne type radio receivers
The superheterodyne principle which enables high performance in radio
receivers came into wide use around the year 1950. This led to a drastic rise
in demand for ferrite from TDK, to be used as core material in intermediate
frequency (IF) transformers. After the age of television began, ferrite also
found wide application in the deflection yoke cores of CRT tubes.
Development of first cassette
tape made in Japan
Four great world-class innovations by TDK ②
Magnetic tape technology revolutionizes music life
The Paramistor developed by TDK for use as arithmetic
element in the Parametron type electronic computer
(Grand Prix at 1958 Brussels World Exposition)
TDK developed the first cassette tape made in Japan. The combination of superior magnetic
materials technology and coating technology later also proved its worth in the manufacture of
video tape products.
Memory for electronic
calculators
A superheterodyne type radio receiver, and ferrite cores
for IF transformers (foreground)
Before semiconductor memory
came into widespread use,
ferrite cores from TDK also
served as memory elements in
electronic calculators.
of high-performance
1950 Spread
radio receivers
Materials technology
Memory element consisting of
a matrix of ferrite cores
1960
First Synchro Cassette Tape, made in Japan
Spread of television
Materials & Energy
Equipment for manufacturing cassette tapes
and video tapes
1970
TDK materials technology is also a
crucial advantage in the energy sector
The driving factor behind TDK's product power is superior materials
technology. Shaping the characteristics of the material at the molecular level
enables the creation of innovative electronic components and devices that
meet even the most advanced needs of the market.
Power conditioners connected to
solar power or wind power
generation systems use so-called
reactors (consisting of
a step-up coil and smoothing coil).
The cores of these products also
utilize ferrite from TDK.
● Materials design technology
Control of main raw material composition as
well as microadditives is an effective approach
for achieving specific targeted properties.
Reactor core made of large current
compatible ferrite material PE90
● Powder control technology
Most raw materials are used in powder
form. Various advanced techniques are
applied to control properties such as base
powder microstructure, uniformity, and
dispersion on the nanometer level.
Assortment of main raw materials
● Ferrite (magnetic ceramics material) ● Dielectric ceramics
● Piezoelectric ceramics
● Semiconductor ceramics
Piezo actuators
Multilayer chip varistors (left) /
Ring varistors (right)
● Microstructure control technology
Electroceramic materials are polycrystalline
substances consisting of crystal grains. By
controlling the internal composition of the
crystal grain as well the boundary between
particles and other properties, various
characteristics can be realized.
Neodymium magnet crystal grain structure:
Finer crystal grain and greater uniformity result in
improved magnetic characteristics.
Ferrite cores (left) /
Ferrite magnet (right)
Ceramic capacitors:
High-voltage type (left) /
Stacked type (right)
2015-2016 TDK Company Profile
06
Innovation in
core technologies
Ferrite or ceramic sheet
1980
Four great world-class innovations by TDK ③
Fine multilayering technology drives miniaturization
and weight reduction of electronic equipment
Conductor pattern
(coil semicircle)
Via (for connecting
conductors between
sheets)
Innovation
Then
NowCore technologies
1980
In 1980, TDK developed the first multilayer chip inductor, using
original multilayering technology to form three-dimensional spiral
coils inside the chip. Further refining of this technology led to the
introduction of multilayer ceramic chip capacitors, multilayer chip
beads, multilayer chip varistors and various other multilayer electronic
components which significantly contribute to reduced size and
weight of electronic devices.
Multilayer chip inductor structure (right) and multilayer
method (left): On a sheet of ferrite or other material,
an internal electrode pattern is printed using metallic
paste, and multilayering is used to form the spiral coil.
Smaller dimensions and lighter
weight of electronic devices
process
Process technology
Process technology extracts the maximum of the characteristics of materials.
Super-advanced control techniques operating with nanometer level
precision result in products with outstanding performance and functionality.
Ferrite cores of various shapes, produced with
high level forming technology
● Forming technology
Ferrite cores, magnets etc. are formed by
adding a binder to the base powder. A high
degree of technical sophistication is
required to achieve compact, low-profile,
and complex shapes.
● Sintering technology
Nanoscale structure of a TMR head
(read element of an HDD magnetic head)
07
Examples of element distribution
evaluation for ceramic dielectric
(capacitor material) using advanced
analyzing equipment
Electroceramic materials and magnetic
materials are shaped and then sent to the
sintering process to become the sintered
compact. This requires extremely accurate
environmental control, because the
resulting microstructure is affected by
factors such as temperature and gas
components in the sintering furnace.
Ferrite sintering process
Core and shell structure of dielectric ceramics
particles
The magnetic heads business of TDK began
in 1962 with the development of a ferrite
head core piece for storage devices such as
magnetic drums.
Magnetic head technology opens the way to
amazingly high recording density
The areal density of HDDs has
grown by a factor of about 10
every five years.
Magnetic head technology from
TDK has greatly contributed to this
development. Currently, TDK is in
the process of bringing the next
head generation, thermal assisted
magnetic heads, from the lab to
the practical application stage.
Thin film technology triggers magnetic head
progress
Thanks to the development of magnetic heads utilizing
thin film process technology on the nanometer level, the
recording density of hard disk drives took a giant leap
forward in the 1990s.
10T
Areal density
(bits per square inch)
1994
TDK's magnetic head
technology enables
HDDs with much larger
storage capacities
Four great world-class innovations by TDK ④
TMR/PMR heads
1T
Advanced GMR heads
100G
Slider
Magnetic head of the 1970s
(Winchester head)
Trend towards digital
1990
Thin film magnetic heads
GMR heads
10G
1G
MR ：Magnetoresistive
effect
magnetoresistive effect
TMR ：Tunnel magnetoresistive effect
PMR ：Perpendicular magnetic recording
MR heads
100M
1990
1995
GMR ：Giant
2000
2005
2010
Evolution of HDD magnetic heads and areal density
2015
(Year)
Spread of mobile phones, PCs, Internet
HDD
● Thick film process technology
● Thin film process technology
● Winding technology
● Electrode materials technology
A technique that involves printing type electrodes onto
dielectric or ferrite sheets to create a multilayer structure.
It is used in the production of multilayer electronic
components such as chip
capacitors and chip
inductors.
A technique that involves creating a thin film on a
wafer and using etching processing or similar to form
an electrode, coil, head element etc. It is used in the
production of magnetic heads for hard disk drives,
thin film electronic components etc.
Advanced technology for the process of winding wire on
the cores of coils and transformers. Automatization and
optimization result in a highly reliable product.
Core technology know-how is also applied for internal
electrodes of capacitors, electrodes for lithium ion batteries,
and similar.
Dielectric layer
Chip cross
section view
Power coils
Electrode
Appearance and internal structure of a multilayer
ceramic chip capacitor
Both volume
and weight have
shrunk to about
1/200 since 1990
2012
1608
1005 format
Grain of rice
Thin-film common mode filter formed on wafer (left),
and enlarged photograph (right)
Common mode filters
Multilayer ceramic chip capacitors Lithium ion polymer batteries
● Coating technology
Coating technology produces a very thin uniform film on
a substrate or film base. TDK can harness advanced coating
techniques developed in manufacturing magnetic tape.
● High-speed winding technology
This technology is applied in the manufacturing process
for film capacitors and other products, ensuring fast
and highly precise winding of the plastic film.
1005
0603
0402
Miniaturization of multilayer ceramic chip capacitors
(2012 format dimensions: 2.0 x 1.2 mm, 0402 format
dimensions: 0.4 x 0.2 mm)
Head element formed on wafer (right),
and enlarged photograph (left)
ITO transparent conductive films
ITO (indium-tin-oxide) powder
Film capacitors
2015-2016 TDK Company Profile
08
Innovation in
core technologies
2003
Increased applications of thin film technology
Breakthrough to even smaller size and higher performance
TDK is also pursuing further miniaturization and higher performance of electronic components via
other approaches besides multilayering. A thin film common mode filter developed by applying thin
film process technology from magnetic heads is a case in point. The manufacturing process
comprises film forming technology using a vacuum equipment, proprietary fine pattern forming
technology and other advanced methods. To support the evolution of smartphones and other
mobile devices towards ever higher speeds, multi-function capability, and higher frequencies, TDK
has developed thin film band-pass filters, thin film baluns, thin film couplers and a range of other
RF components using advanced thin film technology.
Structure of thin film common
mode filter with ESD function
Innovation
Thin film band-pass filter
Then
NowCore technologies
Thin film capacitor
2000
Thin film balun
Thin film coupler
Spread of various mobile devices
Evaluation and simulation technology
Evaluation and simulation expertise takes TDK's accumulated technology to the next level. Activities range from material analysis
and examination, simulation of product structure, thermal conditions, and electromagnetic field to noise measurements and
design of noise control solutions using radio wave anechoic chambers. These effectively sustain the creation of new products.
● Evaluation and analysis
technology
Tasks such as observation of
microstructure and visualization of
elemental distribution are carried out
using the latest analysis equipment
and simulation techniques.
● Simulation technology
● EMC countermeasure technology
Harnessing the power of computers to visualize the
distribution of thermal energy emitted by circuits, or
the electromagnetic field distribution of noise sources
is helpful in designing products more
efficiently and ensuring effective
noise countermeasures.
EMC measures are aimed at ensuring that a device
is not susceptible to interference from other devices
and also does not become the cause of interference
in other devices. TDK offers a range of EMC
countermeasure products. Anechoic chambers are
also used for purposes such as noise measurement
and evaluation, antenna evaluation etc.
Thermal
analysis simulation
Radio wave anechoic chamber
Element imaging technology for components mounting substrates
09
Noise measurement
Advanced vacuum technology is another
TDK strength
HDD magnetic heads, thin film electronic components,
functional films and similar TDK products are manufactured
using advanced vacuum technology and vacuum equipment
(sputtering etc.).
Vacuum container
High voltage
Packing plate (cooling plate)
Target
2012
Magnet innovation
Year Zero of the Magnet–A new TDK challenge
In order to improve performance, magnets are usually fabricated under addition of various kinds of rare
earth materials. But TDK is forging ahead with the development of new magnets that either reduce the use
of costly rare earth additions significantly or eliminate them altogether. In 2012, TDK successfully established
a mass production process for dysprosium-free neodymium magnets. To mark this new beginning, 2012
was designated as the "Year Zero of the Magnet", and TDK is continuing to work towards the realization of
various new magnets that do not rely on rare earth materials at all.
Argon ion
Argon
gas
Another achievement: thinner ferrite magnets
Exhaust gas
ITO film
Resin substrate
Target particle
Basic principle of ITO film forming by sputtering
2010
Existing
manufacturing method
Neodymium magnets (NEOREC series) from TDK
DC motors used in automobiles, as well as electric motors for various
other applications increasingly are subject to severe space limitations. To
shrink the dimensions of such motors, thinner ferrite magnets are
highly desirable. With conventional manufacturing methods, magnets
of less than 3 mm thickness are difficult to achieve, but the proprietary
NS1 method from TDK has enabled the realization of high-performance
ferrite magnets with a thickness on the order of only 1 mm.
NS1 method
Magnets for motors. The NS1 method
allows also wide-angle designs that snugly
envelop the rotor (right).
Thin ferrite magnets produced with the
NS1 method enable the realization of
smaller and lighter motors.
Spread of smartphones and tablets, evolution of cloud computing
● MEMS technology
Device & module technology
MEMS (micro electro
mechanical systems)
technology involves
configuring sensor, actuator,
and similar functions on a
chip using micro machining to
build a very compact
functional device.
● Circuit design technology
This comprises selecting optimum
components and designing the
circuitry including the wiring
and thermal dissipation
arrangement using advanced
simulation techniques.
AC-DC switching
power supply (board type)
Power modules
● Packaging technology
● LTCC technology
Parts assembly, bonding, sealing, as well as
structural design and shape design are
optimized to achieve compact dimensions
and high performance.
Low temperature co-fired ceramic (LTCC)
technology allows the integration of a high
number of components such as capacitors
and inductors on a dielectric sheet to create
a printed multilayer module.
NTC thermistors (left) and RF components (right)
LTCC RF module
● Semiconductor embedded substrate (SESUB) technology
MEMS microphone
This technology involves embedding
semiconductor IC chips into the resin
substrate, and mounting passive and
other components in a threedimensional arrangement to achieve
a modular product.
MEMS pressure sensor
Bluetooth module
Power
management unit
Production technology
The TDK policy of QCD (Quality, Cost, Delivery) is being further strengthened, to enable swift and
effective adaptation to changes in the marketplace. A system of unified production extending
from source material to finished product is aimed at enhanced manufacturing power.
● Equipment technology
Outstanding products come from outstanding
manufacturing facilities. TDK not only develops
innovative manufacturing techniques but
realizes these by building much of the required
equipment in-house. This comprehensive
approach is the key to superior craftsmanship.
High-speed, high-precision automatic
winder used for film capacitor manufacturing
TDK factory automation equipment:
Flip chip bonding machine (left) /
FOUP load port (right)
2015-2016 TDK Company Profile
10
Research & development
TDK is making full use of its worldwide network linking Japan, China, other Asian countries, Europe, and the U.S.
Specific priority operation fields have been defined for each region. This enables us to pursue R&D at the cutting
edge of technology, in order to anticipate and meet specific demands. Some representative accomplishments are
highlighted on this page.
The Cutting Edge of
Evaluation
and simulation
technology
R&D
Passive
components
Applied
products
Ferrite cores
HDD heads
Production
technology
Transformers
Inductors
TDK core
technologies Device &
module
technology
Process
technology
Materials
technology
Neodymium magnets
Ferrite magnets
Aluminum electrolytic
capacitors
Film products
Film capacitors
Power supplies
Ceramic capacitors
Rechargeable
batteries
RF components
and modules
MEMS applied
products
Flash storage
applied products
Radio wave absorbers,
anechoic chambers
1 1
Circuit protection components
Materials technology with ferrite as a starting point, combined with process
technology to fully utilize the potential of a material and obtain the utmost in
performance—these are the major reasons for TDK's unique product
development power from the materials level up. By pushing the envelope in its
core technology fields, TDK forges ahead to make visionary dreams a reality.
Innovative electric vehicle charging concept
Wireless Power Transfer
This system is designed to allow wireless
charging of the batteries in an electric vehicle,
thereby eliminating the need for cumbersome
cable connections. Coils using
high-performance ferrite, along with a unique
auto tuning principle enable optimized
charging even if the parking position is not
totally accurate. The technology also has high
promise for industrial equipment applications.
Ferrite
Vehicle side
Spiral coil
(Wound type coils
can be made
thinner than coils
with E-shaped core)
Wireless power transfer for charging
an electric vehicle (concept)
Road side
Sensors
EMC countermeasure
products
Piezoelectric material products
TDK core technologies
Manufacturing
equipment
Principle of wireless charging
High-performance batteries sustain the smart society
High-Capacity Rechargeable Battery Material
For lithium ion type batteries and other rechargeable batteries used in vehicles and similar
applications, achieving high storage combined with high safety is a key objective. TDK is
also conducting original and innovative research into areas such as positive and negative
electrode materials and separator materials.
Separator
Li
Positive
electrode
+
Charge
e-
Discharge
Negative
electrode
Electrolyte
Li
+
Discharge
Charge
e-
e- Electron Li+ Lithium ion
Principle of lithium ion battery
Enlarged photograph of separator
Breakthrough towards ultra-high-capacity HDDs
Cutting-edge technology creates tiny modules with high performance
Thermal Assisted Magnetic Recording Heads
Semiconductor Embedded Substrate (SESUB)
Near field light generated by a laser beam heats
up a small spot area exposed to the magnetic
flux from the recording head, which enables
amazingly high recording density of more than
one terabit per square inch. TDK is now
working on bringing thermal assisted magnetic
recording heads with integrated laser to the
product stage for market introduction.
Laser beam
Recording head
(PMR element)
This technology involves embedding semiconductor IC chips with
lowered profile into the resin substrate, and mounting other
components in a three-dimensional arrangement to achieve a
modular product. Advantages include reduced size, low height,
excellent thermal dissipation, and reduced noise emissions.
Read head
(TMR element)
Near-field light
Thermal assisted magnetic recording head with
integrated laser
Principle of thermal assisted magnetic recording
IC Die
SESUB based power management
module for smartphone (left) and
Bluetooth module (right)
IC Die
SESUB cross-section view (example)
Next-generation high speed communication device
The advancement of cloud
computing means that hard
disk drives, the main form of
data storage in data centers,
need to offer even higher
storage capacities.
Fundamental solutions to eliminate dependence on rare earth materials
Optical Engine
This device transforms an electrical signal into an
optical signal for high-speed communication.
The development is aimed at communications
between or within devices such as ICT or industrial
equipment. Small size, low power consumption,
and high resistance to noise are some of the
advantages, making the system ideal for high-speed
signal transmission over long distances.
Electrical
signal
Optical
signal
Magnets with Reduced or No Rare Earth
Material Content
The manufacturing process of neodymium magnets and ferrite magnets usually requires the
addition of various rare earth materials to improve performance. In order to counter risks such as
fluctuations in price and stability of supply, TDK is engaged in developing magnets that require
significantly lower amounts of rare earth additions or even eliminate the need for them altogether.
Image
processing board
Optical engine integrated in connector section
 Next-generation high-efficiency power supplies
TDK is also engaged in the
following advanced fields:
Dysprosium-free neodymium magnet for VCM
(voice coil motors) in HDDs
Microstructure of neodymium magnet
 Multi-function, high-performance sensors
 Ultra-miniaturized chip components
 MRAM (Magnetoresistive Random Access Memory)
 Ultra-high-performance magnetic materials
2015-2016 TDK Company Profile
12
For the future
TDK core technologies based on
materials technology are also
contributing to the future of electronics.
We are challenging accepted notions
and are constantly working on
innovative solutions. Some examples are
highlighted on this page.
Software Solution
Creating high value-added products
Wireless Technology
A fusion of core
technologies and software
Application of magnetic materials technology and magnetic circuit technology
Transportation systems of the future will
support wireless charging while in motion
Aiming for higher productivity and better quality,
TDK is promoting the integration of materials
technology and other core technologies with
software. For example, intense efforts are directed
at the design and development of high-efficiency
power supplies for electric vehicles, as well as the
creation of high value-added products for the
energy infrastructure of the future.
Wireless power transfer, which is already a reality for charging mobile
devices and similar, is poised to spread to electric vehicles (EV).
A technique that holds promise for the near future is wireless power
transfer using magnetic resonance. Power transmitting devices
installed along highways could be matched to onboard receiving
devices in vehicles, to enable wireless power transfer while
driving. Possible usage scenarios also include rail and other
transport systems.
PrDevice
ocess&techn
module
Production tec
Wireless transfer supporting
high amounts of energy
CORE TECHN
Materials technology
Process technology
CoreTechnolog
technology
dule technology
Device
&
mo
culture Contribute
and industry
Production tec
Evaluation & simulation
through creativitytoFerrite cor
Transform
Passive
Compon
Wearable Computers
Freely
controlling
Film
Application
Products
Mthe electron
agnetic
spin O Application
ther Induct
Taking the
Cha
• Sens
Spintronics
Core
Technologies
Materials technology
Detecting extremely feeble biomagnetism in the brain or heart
Application of TMR elements developed for HDD
heads allows realization of ultra-sensitive magnetic sensor.
Promising application fields include health care and medical sector.
The science of controlling the charge and spin of an electron through nanotechnology is called spintronics.
The application of TMR (tunnel magnetoresistive effect) elements developed for HDD magnetic heads to
this field makes it possible to realize a compact magnetic sensor with low power consumption but extremely
high sensitivity, comparable to a SQUID (superconducting quantum interference device) which is a very
sensitive magnetometer used to measure extremely subtle magnetic fields. TDK is also working on the
development of TMR elements utilizing MRAM (Magnetoresistive Random Access Memory), which is
considered the next generation of nonvolatile memory.
13
Energy Harvesting
Battery-less mobile devices may
become a reality
Materials Innovation
Accessing and utilizing energy that is all around us
Breaking through theoretical limitations
“Temperature difference power
generation system”converts waste
heat into energy
Development of magnets better than
neodymium
The concept of energy harvesting involves technology
for converting heat, vibrations, radio waves etc. in the
environment into electrical power. It may even enable
the realization of mobile devices that do not need a
battery. TDK is engaged in research into a
“temperature difference power generation system”
that makes use of the Seebeck effect.
nology
e technology
chnology
NOLOGIES
Aiming for the world's
most powerful magnet
Established opinion considers it difficult to exceed the
magnetic force of neodymium magnets. But TDK is
challenging this assumption with cutting-edge technology
such as a nanocomposite magnet material whose
structure is controlled on the nanometer level. Our R&D
efforts are directed at creating the world's most powerful
magnet that surpasses even neodymium.
Evaluation
&
simulation
technology
allenge to theEnergy
Next
Level
Wireless Technology
Harvesting
gies
y
chnology
res
nentsducts
mers
tors
nsors
Pro
Evaluation &
simulation
technology
Software Solution Spintronics
Materials Innovation
Bringing electronics and
humans closer together
Wearable Computers
ICT equipment for the post-smartphone age
Next-generation electronic components and modules
using substrate embedding technologies will make
wearable computers a reality
Wearable computers taking for example the form of wristwatches, eyeglasses or belts
are expected to become the next big thing in the ICT (Information and Communication
Technology) sector. They will allow flexible use in many situations, freeing the user from
the need to carry a smartphone or tablet around. TDK is pushing the technology
envelope in this field, with SESUB technology for embedding chips in substrate, RF
module technology, and other advanced techniques for electronic components and
modules. We have also developed an ultra-low-profile thin film capacitor (TFCP) that is
flexible and allows embedding in the substrate.
2015-2016 TDK Company Profile
14
Global network
TDK Group's Global Network
Building a flexible R&D and production framework to accommodate worldwide
and diversifying business activities of our customers
SAE (Hong Kong,
China)
Europe
[Germany]
TDK Europe GmbH
TDK-Lambda Germany GmbH
EPCOS AG
TDK-EPC AG & Co. KG
[Hungary]
EPCOS Elektronikai Alkatrész Kft.
[Taiwan]
[UK]
EPCOS (Germany)
[Italy]
TDK UK Ltd.
Becromal S.p.A.
EPCOS Taiwan Co. Ltd
[France]
TDK Italy S.r.L.
[Korea]
TDK-Lambda France SAS
[Iceland]
TDK Korea Corporation
[Spain]
Becromal Iceland ehf
EPCOS Electronic Components S.A.
[Austria]
[Czech Republic]
EPCOS OHG
EPCOS S.r.o.
[Croatia]
[Sweden]
EPCOS Croatia d.o.o.
TDK Nordic AB
[Poland]
[Finland]
EPCOS Polska Sp.zoo
TDK Nordic OY
[Switzerland]
[Portugal]
EPCOS 2 Portugal Lda
15
TDK Taiwan Corporation
TDK-Lambda UK Ltd.
EPCOS Schweiz GmbH
TDK Electronics Korea Corporation
EPCOS Korea LLC
[Malaysia]
TDK (Malaysia)Sdn.Bhd.
TDK-Lambda Malaysia Sdn. Bhd.
EPCOS Sdn. Bhd.
EPCOS RDC Sdn. Bhd.
[Singapore]
TDK Singapore (Pte) Ltd.
TDK-Lambda Singapore Pte. Ltd.
[Russia]
Entrocomponent Solution Singapore Pte. Ltd.
TDK CIS LLC
EPCOS Pte Ltd.
[Thailand]
TDK (Thailand) Co.,Ltd.
TDK Dalian Corporation
Magnecomp Precision Technology Public Co., Ltd.
TDK-EPC Hong Kong Ltd.
[Philippines]
TDK Xiamen Co., Ltd.
TDK Philippines Corporation
TDK Electronics Philippines Corporation
[Israel]
TDK-Lambda Ltd.
Islambda Electronics Ltd.
Lambda Electronics Ltd.
Qingdao TDK Electronics Co., Ltd.
TDK (Shanghai) International Trading Co., Ltd.
TDK (Suzhou) Co., Ltd.
SAE Technologies Development
(Dongguan) Co., Ltd.
Amperex Technology Ltd.
Wuxi TDK-Lambda Electronics., Ltd.
[China]
Acrathon Precision Technologies (HK) Ltd.
TDK Hong Kong Co., Ltd.
SAE Magnetics (Dongguan) Limited
SAE Magnetics (H.K.) Ltd.
TDK Dongguan Technology Co., Ltd.
Technical Center (Japan)
Japan
TDK Corporation
Headquarters (Tokyo)
Akita Plant (Akita)
Chokai Plant (Akita)
Inakura Plant (Akita)
Narita Plant (Chiba)
Technical Center (Chiba)
Asia
Kofu Plant (Yamanashi)
Shizuoka Plant (Shizuoka)
Mikumagawa Plant (Oita)
TDK-Lambda Corporation
Headquarters (Tokyo)
Nagaoka Technical Center (Niigata)
TDK-EPC Corporation
TDK-MCC Corporation
Kitakami Plant (Iwate)
Honjo Plant (Akita)
TDK Ugo Corporation
Ouchi Plant (Akita)
Americas
Headway Technologies, Inc. (USA)
Asama Techno Factory (Nagano)
[USA]
[Brazil]
TDK Corporation of America
TDK do Brasil Ind. e Com. Ltda.
TDK Ferrites Corporation
EPCOS do Brasil Ltda.
TDK Components U.S.A., Inc.
TDK RF Solutions Inc.
Headway Technologies, Inc.
TDK-Lambda Americas Inc.
EPCOS Inc.
Konoura Plant (Akita)
Acrathon Precision Technologies
(Dongguan) Co.,Ltd.
TDK-NITTO (Shanghai) Electro-Energy Co., Ltd.
Guangdong TDK Rising Rare Earth High
Technology Material Co.,Ltd.
EPCOS Limited
EPCOS (Zhuhai) Co., Ltd.
EPCOS (Zhuhai FTZ) Co., Ltd.
EPCOS (Xiaogan) Co., Ltd.
EPCOS Technology (Wuxi) Co., Ltd.
Iwaki Plant (Akita)
TDK Yurihonjo Corporation
Honjo Plant (Akita)
Yashima Plant (Akita)
TDK Shonai Corporation
Sakata Plant (Yamagata)
Tsuruoka Plant (Yamagata)
Iida Plant (Nagano)
TDK Kofu Corporation
TDK Precision Tool Corporation
EPCOS (Shanghai), Ltd.
EPCOS (Xiamen) Co., Ltd.
(Major sites as of October, 2015)
[India]
EPCOS India Private Ltd.
[Indonesia]
PT. EPCOS Indonesia
2015-2016 TDK Company Profile
16
Business @ a glance
D
Other
20,800
TDK is one of the leading electronic
component manufacturers in the world.
million yen
2％
A
Passive Components
541,200
million yen
Exclusive mastery of core technologies combined with the spirit of craftsmanship
sustains our activities in a wide range of fields.
C
B
A
17
Film Application Products
151,200
million yen
Magnetic Application Products
369,200
million yen
Passive
Components
14％
34％
50％
Consolidated net sales
1,082,550
million yen
Consolidated net sales
for fiscal year ended
March 2015, by segment
Many different kinds of electronic components sustain advanced applications in today's modern
world. Active components such as integrated circuits and LSI chips could not be driven without
capacitors and inductors, and they also need many other passive components, along with structural
parts such as printed circuit boards. Configuring passive components as chips and surface mount
devices (SMD) or integrating them into modules sustains the trend towards smaller dimensions, lower
weight, and thinner profile of electronic products.
Ceramic capacitors
Inductive devices
RF components and modules
Used for noise suppression and signal
processing in a wide range of electronic
devices indispensable for daily life. As the
trend towards electric vehicles and extensive
use of electronics in automobiles continues,
more than 1,000 multilayer ceramic chip
capacitors are commonly found in a single
vehicle, and smartphones and tablets use some
400 or more to realize small dimensions and
high functionality.
This field includes inductive devices made by
wire-wound, multi-layer, thin film process,
transformer and EMC components.
They contribute significantly to power
savings in automobiles, higher efficiency in
communication systems, as well as higher
sensitivity and longer battery life in
smartphones.
These high-frequency components and
modules are designed for use in smartphones,
tablets, and similar products. New products are
being developed using SAW/BAW technology,
low temperature co-fired ceramic (LTCC)
technology, thin film technology, and Micro
Electro Mechanical Systems (MEMS)
technology.
Piezoelectric material products,
circuit protection components
Piezoelectric actuators and other products
utilizing piezoelectric materials contribute to
enhanced fuel economy in automotive
engines. Other key items in this area are
circuit protection components such as
varistors and arresters.
B
Magnetic
Application Products
TDK's extensive technical know-how in magnetic materials, magnetic circuits and related fields, along with thin film process
technology, spintronics, and other cutting-edge technology is clearly evidenced in our range of magnetic application
products. High-efficiency power supplies incorporating outstanding ferrite and transformer technology, as well as
high-performance magnets contribute significantly to the conservation of power and resources.
Power supplies
Power
supplies
Magnets
Recording devices
Designed mainly for industrial equipment, the extensive
lineup includes AC-DC switching power supplies,
programmable power supplies, DC-DC converters, power
supplies for charging
batteries, etc.
Automotive power
supplies for various
hybrid electric and electric
vehicle configurations are
also available.
In addition to our
neodymium and ferrite
magnets with wide
range of property,
we produce magnet
applied products and
contribute greatly to
the energy saving for
the automobiles and
home appliances.
Advanced magnetic theory and
leading-edge thin film technology
contribute to recording capacity
expansion of HDD.
Various sensors using
high-performance GMR and TMR
elements are also widely used in
the auto-focus encoders of
single-lens reflex
cameras.
Sensors
The lineup includes temperature sensors, pressure sensors,
gear tooth sensors, toner sensors and various other
sensors that are
essential for
multifunction
capability in electronic
devices and in the car
electronics sector, as
well as for factory
automation and office
automation.
Aluminum electrolytic & Film capacitors
Aluminum electrolytic capacitors feature high capacitance
and come in various types, such as large products for
industrial equipment, high-reliability axial lead types for
automotive applications, and various other
configurations. Film
capacitors offer
outstanding
reliability and are
suitable for a wide
range of
applications.
C
Film
Application Products
The application of materials technology and film forming
technology has resulted in the creation of functional
films and other new products with high added value.
Applied films
Applied films
TDK supplies ITO transparent
conductive films and other
functional films used in the touch
panels of smartphones. Coating
technologies derived from magnetic tape
manufacturing processes (including wet
coating) and thin film process technologies with
vacuum coating process such as the sputtering are applied
to create those films.
Energy devices
TDK products in the energy
sector range from thin batteries
ideal for use in smartphones,
tablets, and other small-size
electronic equipment to
high-capacity batteries for automotive
use and for storing the energy generated
by solar power and wind power installations.
D
Other
TDK core technologies are proving their worth in growth
markets such as Information and Communication Technology
(ICT), automotive, and energy & industrial equipment sector.
Flash memory applied devices
Flash memory applied devices
TDK supplies solid state drives (SSD) with proprietary
memory control chips and CompactFlash cards for industrial use. These are
found for example in communication base stations and traffic control systems,
providing support for the age of Big Data.
Radio wave anechoic chamber & EMC measurement system
More than 1,200 radio wave anechoic
chambers from TDK are installed around the
world. High-performance antennas and
automated measurement systems with dedicated software improve the
efficiency of EMC measurements. TDK also offers EMC solutions comprising
highly accurate EMC measurement services to support effective noise
countermeasures in electronic devices.
Mechatronics
Production equipments
(production
equipment)
TDK's expertise in mechatronics gained in the production
of outstanding electronic components is available in the
form of production equipment.
TDK provides load ports and flip chip bonders for various
wafer sizes, as well as a range of other advanced factory
automation equipment.
2015-2016 TDK Company Profile
18
Application
ICT Network
Staying in touch, staying connected, going global
Smartphone market
continues to grow
The smartphone market that drives
mobile computing is expanding
rapidly. Smartphones now account
for about half of all mobile phones
worldwide, and yearly sales amount
to about one billion units. Boosted
by the higher speeds afforded by
LTE or 4G networks, smartphones
have become the tools that connect
a myriad of things. The wide variety
of electronic components and
modules from TDK, making full use
of advanced core technologies,
dramatically expands the
possibilities of the smartphone.
19
RF circuits
Diplexers/Baluns
Charging mobile devices
wirelessly is the
way of the future
Many smartphones and other
mobile devices are equipped with
lithium ion polymer batteries made
by TDK. And wireless power
transfer systems that allow
charging a device without physical
contact simply by placing it near a
charger are about to make the
mobile lifestyle even more
convenient. Relying on its expertise
in magnetic materials and
magnetic circuits, TDK is providing
coil units and other parts for such
wireless power transfer systems.
Used in smartphones and
other mobile phones for
picking a desired signal out
of a wide-band signal, and
also for balanced/unbalanced
signal conversion and other
applications.
RF circuits
SAW filters/
RF modules
SAW (Surface Acoustic
Wave) filters are key
components in RF circuits.
Multiple circuit elements
are integrated into a single
high frequency module.
Application examples:
Smartphones,
mobile phones, etc.
Application examples:
Smartphones,
mobile phones, etc.
Temperature sensors
Chip type
NTC thermistors
Chip components made from a special kind
of semiconductive ceramics. Designed to be
used in a control circuit as temperature
sensor or for temperature compensation.
Application examples:
Internal temperature control for
smartphones, mobile phones, etc.
ICT Netw
Projected
shipping volume of
smartphones and
tablets in 2019
About
2.2
Power supplies
Lithium ion polymer
batteries
billion units*
2014: about 1.6
billion units (expected)
Interfaces
Thin film
common mode
filters
Smartphones
Tablets
Highly compact and
ultra-low-profile chip
components manufactured
using thin film technology.
Used for noise countermeasure
in high-speed interfaces.
Application examples:
Smartphones, tablets,
other mobile devices
Cameras
Power supply circuits
Power supply circuits
SMD inductors
3-terminal feed-through
capacitors
These surface mount type power
coils are key components for
DC-DC converters that convert the
voltage supplied by a battery.
This multilayer ceramic chip capacitor has
three terminals (two electrodes and ground).
It provides highly effective noise suppression
over a wide frequency range.
work
Application examples:
Smartphones, mobile phones,
tablets, etc.
Application examples:
Smartphones, mobile phones, etc.
Lens actuators
for camera modules
Compact actuators realize high-speed auto-focus
and optical image stabilizing functions for cameras
in smartphones and other devices.
Application examples:
Smartphones, mobile phones, etc.
Multilayer chip
varistors
Designed to bypass static electricity
discharges from the human body or
other sources, to protect the
circuitry and prevent malfunction of
microprocessor chips.
Application examples:
Smartphones, tablets,
other mobile devices
Application examples:
Smartphones, tablets,
other mobile devices
Power supplies
Wireless
power transfer
coil units
Transmitting and receiving coil
units compatible with various
wireless power transfer
standards. The receiving coil is
characterized by an extremely
low profile achieved through
use of a flexible sheet.
Application examples:
Smartphones, tablets,
handy terminals,
other mobile devices
Microphones
MEMS microphones
Connectors
Pouch type battery
widely used in
smartphones and other
mobile devices,
employing a gel instead
of a solution as
electrolyte.
High-performance
microphone manufactured
with advanced MEMS
(Micro Electro Mechanical
Systems) technology,
integrated in a compact and
low-profile package.
Application examples:
Smartphones,
mobile phones, etc.
* TDK data projection (as of July 2014)
RF circuits
Hi-Q inductors
Q factor is a parameter that
characterize an inductor. The
higher the Q factor, the lower the
losses. This product comes in a
small package with high Q factor.
Application examples:
Smartphones, mobile phones, etc.
2015-2016 TDK Company Profile
20
Application
ICT Network
Innovation in lifestyles,
innovation in business
Touch panels
Building the ICT
infrastructure for the
age of cloud computing
ICT products including smartphones,
tablets, and PCs continue to evolve
into a high level social infrastructure
intricately connected via wired and
wireless networks. Along with
convenience and connectivity,
security and reliability are aspects
that will become even more
important. Technology and products
from TDK contribute significantly to
the establishment of an ICT
infrastructure for the age of cloud
computing.
21
ITO
transparent
conductive films
High-capacity HDDs
and SSDs are key
storage solutions for
a world of Big Data
Data centers rely largely on
high-capacity hard disk drives for
storage. TDK is the world's leading
manufacturer of magnetic heads for
HDDs. Head drive motors also use
neodymium magnets from TDK.
Data centers are increasing their
efficiency by implementing
hierarchical storage patterns where
solid state drives (SSDs) are used in
combination with hard disk drives
(HDDs). TDK also supplies a range of
SSDs designed for industrial
applications including use in data
center servers, thereby providing
support for the world of Big Data.
ICT Network
This conductive film is produced
by coating a plastic film with the
transparent electrode material
ITO (indium-tin-oxide). It is
widely used in touch panels and
similar applications.
Application examples:
Tablets, smartphones,
notebook PCs, etc.
Various circuits
Multilayer
ceramic chip
capacitors
These components are essential for filter
circuits, noise countermeasure, and other
applications. Array types where multiple
capacitors are arranged on a single chip are
also commonly used.
Application examples:
Smartphones, mobile phones, tablets, etc.
Data
Centers
HDD
Projected
explosion of
worldwide information
data volume by 2020
About
40
times more than
in 2010*
HDD magnetic
heads
Various circuits
Sophisticated thin film
technology creates head
elements on a wafer, which
is then cut into individual
chips for mounting on the
suspension/arm assembly.
Semiconductor
Embedded
Substrate (SESUB)
A technology for embedding
integrated circuit (IC) chips
within the resin substrate.
A three-dimensional packaging
technology with SESUB
contributes enormous customer
PCB space saving.
Application examples:
Smartphones, mobile devices,
wearable devices, etc.
ICT Devices
Resonance circuits
Various circuits
Multilayer
high gigaspira
beads
Using a unique multilayer
structure and ferrite technology,
this EMC countermeasure
component provides noise
suppression over a wide frequency
range from a single chip.
Application examples:
Noise countermeasure in
smartphones, notebook PCs,
electrical household appliances,
etc.
This product combines C0G
characteristics with
industry-leading high capacitance.
It can be used instead of film
capacitors, thanks to minimal
temperature or voltage dependent
capacitance fluctuations.
Application examples:
Resonance circuits of wireless
power transfer systems,
snubber circuits, etc.
HDD
Neodymium
magnets for
VCM
Base stations
Isolators/
Circulators
Voice coil motors (VCM) are the
actuators to drive the heads of a
hard disk drive. They make use of
high performance neodymium
magnets.
Power supply circuits
Multilayer ceramic chip capacitors,
class I, C0G type
Application examples:
Hard disk drives
in notebooks,
desktop computers,
servers, etc.
Application examples:
Hard disk drives in notebook
PCs, desktop computers, servers,
etc.
Electric double
layer capacitors (EDLC)
These energy storing devices feature
characteristics that are about halfway
between capacitors and rechargeable
batteries. They store an electrical charge by
means of an electric double layer formed on
the surface of an activated carbon electrode.
Application examples:
Battery load leveling, high-intensity LED
flash, energy harvesting, etc.
Power supply circuits
Megacap MLCCs
This is a multilayer ceramic chip capacitor with metal fitting type
terminals. It provides high reliability by absorbing stresses to solder
joints caused by board flexing, thermal shocks and similar conditions.
Application examples:
Power supply circuits of base stations requiring high reliability, etc.
These components which
allow output only in one
direction are designed to
prevent unwanted signal
reverse flow at base
stations for mobile phone
networks and similar.
Application examples:
Wireless communication
base stations and relay
stations for mobile
phone networks, etc.
Flash storage
SSD/CF/CFast
for industrial
applications
Data centers
Distributed power
architecture
These are highly reliable flash
storage products incorporating
a proprietary SSD controller
developed by TDK.
Application examples:
Data center servers,
small-scale base stations,
various kinds of industrial
equipment, etc.
* TDK data projection (as of July 2014)
This power supply architecture aims for
higher efficiency by combining a front end
power supply that converts AC input to DC
output, an intermediate bus converter, and
compact POL converters.
Application examples:
IT communication devices etc.
2015-2016 TDK Company Profile
22
Application
Automotive
The unstoppable progress of car electronics
Battery and power supply
technology sustains
"xEV" evolution
The moniker "xEV" refers to the
category of eco-friendly cars that
includes hybrid electric vehicles
(HEV), plug-in hybrid electric
vehicles (PHEV) and electric vehicles
(EV). Battery technology and
advanced power-saving techniques
are essential aspects of the rapid
progress made in this area. TDK
supplies high-performance
automotive batteries using
high-capacity lithium ion cells.
Harnessing its advanced ferrite
technology and circuit technology
know-how, TDK also offers compact,
highly efficient DC-DC converters
that are utilized in electric vehicles
both in Japan and overseas,
contributing significantly to better
range and electric power cost
savings.
High-performance
magnets and highly
reliable automotive
electronic components
The drive motors of many hybrids
and electric vehicles rely on
powerful neodymium magnets from
TDK. Furthermore, the many small
DC motors that operate for example
the windshield wipers and power
mirrors also make extensive use of
high-performance ferrite magnets
made by TDK. With the aim of
ensuring safe and comfortable
driving, TDK supports car electronics
through a wide lineup of electronic
components and devices specifically
optimized for use in the automotive
environment. Their outstanding
ability to withstand extreme
conditions such as soaring
temperatures and high levels of
vibrations results in excellent
reliability.
Power supplies
DC-DC converters for xEV
Power supplies
Batteries
for xEV
Harnessing advanced
electrode material
technology, TDK has
created a high-capacity
lithium ion battery for
automotive applications.
Application examples:
Power supply systems
Application examples:
Rechargeable battery
for main motor drive
Electric motors for the automotive
applications
Ferrite magnets/
Neodymium magnets
Power supplies
Battery chargers
for PHEV/BEV
Optimized design has resulted in a
high-capacity, high-efficiency battery
charger fulfilling automotive-grade
quality requirements.
Automoti
A large number of electric motors are installed on
an automotive vehicle and TDK's high
performance magnets help make them smaller
and lighter and greatly contribute to fuel
efficiency.
Application examples:
HEV/EV main drive motors, compact DC
motors for various automotive use.
23
Efficiently changes the
high voltage of the main
battery in a HEV or EV into
the lower voltage required
by the electric and
electronic equipment of
the car. Also used for
charging the auxiliary
battery.
Application examples:
Rechargeable battery
for main motor drive
Car
Electronics
ive
Projected
production
volume/market size
for eco-friendly cars
in 2020
About
7.2
million units*
2013: about 2 million units
ECU (Electronic Control Unit)
Aluminum electrolytic capacitors
Power supplies
Film capacitors
A type of capacitor using plastic film as dielectric.
Features include long service life, high reliability,
and ability to withstand pressure.
Application examples:
Inverter smoothing circuits for control of main
drive motor, etc.
A type of capacitor using
an aluminum oxide layer
as dielectric, enabling
high capacity ratings.
Used extensively for
smoothing and other
purposes in various
kinds of power supplies.
Application examples:
ECUs mounted directly
in engine room, other
automotive electronic
devices operating in a
high-temperature/high
vibration environment
Power supplies
Transformers
These transformers use
high-performance, low-loss ferrite
as a core material. High power
conversion efficiency helps to
conserve energy.
Application examples:
Power conversion in automotive
DC-DC converters etc.
ECU (Electronic Control Unit)
Multilayer ceramic chip capacitors,
soft termination type
A layer of soft conductive resin is used for the terminal electrodes of
this capacitor. This absorbs stresses caused for example by board
flexing, thereby preventing cracks from forming in solder joints.
Temperature control
Compact case-type
NTC thermistors
Temperature sensors able to withstand
temperatures up to 200°C. Allow accurate
temperature detection in the severely limited
space inside HEV/PHEV drive motors.
Application examples:
Improvement of reliability and prevention of cracks in
solder joints, etc.
Power supplies
Inverter/converter unit
Multilayer ceramic
chip capacitors,
mid voltage type
Changes such as the trend to
higher battery voltage levels
in cars (from 12 to 48 V),
higher power ratings of ECUs
requiring higher voltages, and
xEV type vehicles becoming
mainstream have resulted in
a rise in demand for
high-capacity products rated
for higher voltages.
Multilayer
chip coils
Advanced materials
technology and multilayer
process result in improved
characteristics as well as
small dimensions and low
profile that is difficult to
achieve with existing
winding processes.
Application examples:
Voltage stabilization in
power supply circuits,
noise suppression, etc.
Application examples:
High-voltage circuitry in
inverters, converters,
charging units etc.
for xEV use
Actuators
Piezo actuators
ECU (Electronic Control Unit)
SMD inductors with guaranteed
high temperature ratings
Application examples:
Detection of water temperature and
room temperature, coil temperature of
HEV/PHEV main drive motors
* According to "Comprehensive Study of In-Vehicle Electronic Devices & Components 2014" by Fuji Chimera Research Institute
Unique structure design and manufacturing method
result in automotive-grade inductors able to withstand
temperatures up to 150°C.
Application examples:
ECUs mounted directly in engine room,
other automotive electronic devices operating
in a high-temperature environment
These piezo actuators are made of
piezoelectric materials which
generate stress and/or strain, and
are used to control fuel injection
valves.
Application examples:
Fuel injection systems etc.
2015-2016 TDK Company Profile
24
Application
Automotive
Enjoying eco-conscious mobility
in harmony with the environment
Current control
ECUs and automotive
LANs are the brains and
nervous system of the
"electronified" automobile
The number of cars produced
worldwide is expected to exceed the
100 million mark in 2020 or
thereabouts. At the same time, the
xEV market will also have expanded
enormously. With the spread of ICT,
having cars continuously connected to
the Internet is a coming trend. This
also means that electronic
components in the car play an ever
more important role. TDK is offering
a broad lineup of electronic
components optimized for use in
ECUs (electronic control units) and
automotive LAN applications.
25
Current sensors
Sensors are available in
various product
configurations, including
combined magnetic
circuit and Hall element
types, GMR element
types, and more.
Sensors support safe,
pleasurable, environmentfriendly and worryfree driving
Various kinds of sensors designed
for the automotive environment
are indispensible for system control
in car electronics. The TDK product
range in this sector includes
sensors for temperature, current,
and rotation speed, pressure
sensors based on MEMS (Micro
Electro Mechanical Systems)
technology, advanced TMR sensors
created by harnessing HDD head
technology, and many more. These
all work together to enhance
reliability and contribute towards
safe, enjoyable, and
environment-conscious driving.
Automotive
Application examples:
Battery charge/discharge
current management for
HEV/EV
Oil temperature
control
ATF temperature
sensors
Glass-encapsulated NTC
thermistors integrated in
a resin case. The sensors
feature excellent oil
resistance and compact
dimensions for easy
mounting.
Application examples:
Temperature detection
of ATF (automatic
transmission fluid) in
automobiles, etc.
Rotation control
Gear tooth
sensors
This is a rotation sensor
using a high accuracy hall
IC with a TDK original
housing technology.
It contributes to better
fuel economy in
motorbikes, as well as
cleaner exhaust gas, etc.
Application examples:
Angle detection in cams
and crankshafts etc.
ECU
(Electronic Control Unit)
Megacap MLCCs
This is a multilayer ceramic chip
capacitor with metal fitting type
terminals. It provides high reliability
by absorbing stresses to solder joints
caused by board flexing, thermal
shocks and similar conditions.
Application examples:
Improvement of reliability and
prevention of cracks in solder joints, etc.
Projected
market size for
automotive devices
and components
in 2025
About
58
ECU, navigation systems
Multilayer chip varistors
These products make use
of the special properties of
semiconductive ceramics.
They help to protect
circuitry by absorbing or
deflecting static electricity
and pulse surges to ground.
trillion yen*
2013: about 34 trillion yen
Position control
Position sensors
This is a non-contact type position sensor
using a Hall element and magnet.
Application examples:
Protection against
voltage surges and
static electricity
Application examples:
Position detection in transmissions
Rotation control
Telematics
TMR angle sensors
This device represents an application
of TMR elements used in HDD heads.
It can detect very subtle magnetic
fields, making it suitable for use
as a high-sensitivity angle sensor.
Application examples:
Electric steering, engine control
systems, etc.
Tire pressure monitoring
systems, keyless entry
systems
Transponder coils
These compact, high-sensitivity
antenna coils can be used in tire
pressure monitoring systems,
keyless entry system and similar
applications.
SAW filters
High-performance RF
filters making use of
piezoelectric material.
These are key components
in traffic and onboard
systems using wireless
communications.
Application examples:
Transmitter/receiver circuits
in wireless systems, etc.
Application examples:
Tires, electronic keys, etc.
Pressure sensor dies
MEMS pressure sensor dies
Car
Electronics
Very compact yet durable MEMS
pressure sensor. Depending on
application requirements,
Application examples:
metallization of the glass or
Fuel injection systems etc.
bonding pad is possible.
Power supplies
Choke coils
Automotive LAN
Common mode filters for
CAN-BUS/FlexRay/Ethernet system
Compatible with the CAN-BUS,
FlexRay and Ethernet LAN standards.
Elimination of common mode noise
protects the electrical system of the
car from malfunction.
Application examples:
CAN-BUS, FlexRay, etc.
Inductors for power supply applications requiring high current
ratings. Ferrite or magnetic metal is used as core material.
Application examples:
Automotive DC-DC converter, ECU power supply circuits, etc.
* According to "Comprehensive Study of In-Vehicle Electronic Devices & Components 2014" by Fuji Chimera Research Institute
2015-2016 TDK Company Profile
26
Application
Industrial & Energy
Towards a clean & smart social infrastructure
TDK products and
technology also contribute
to maintaining high power
quality and high-efficiency
conversion
Smart cities implementing the
next-generation power distribution
concept called the smart grid are
being built in various locales, with
the expectation that they will serve
as models for the social
organization of the near future.
Products and technology from TDK
play a vital role also in the energy
sector. Grid-connection and step-up
reactors, aluminum electrolytic
capacitors, film capacitors for DC
link applications—these are just
some of the power electronics
products from TDK that contribute
significantly to maintaining power
quality and ensuring high-efficiency
conversion.
27
Power generators
Versatile noise
countermeasure
components keep
the energy
infrastructure going
The power connections of electronic
systems and equipment to the
power grid can become entry and
exit points for noise. To protect
circuits from transmitted noise such
as surge type noise caused by
lightning, pulse noise, or RF noise,
TDK offers varistors, surge arresters,
power line EMC filters and various
other protection and noise control
components that benefit from our
extensive know-how in materials
technology and other core
technologies.
Neodymium magnets for
wind power generators
TDK supply large-sized high performance
neodymium magnet assemblies for the rotors of
gearless type wind power generators (multipolar
permanent magnet generators).
Application examples:
Rotors for permanent magnet multipolar
synchronous generators
Inverters, converters
Power film capacitors
Film capacitors are widely
used in power generation and
distribution facilities, and also
have been adopted for
high-voltage direct current
(HVDC) power transmission
systems in Europe.
Application examples:
Semiconductor protection
(snubber circuits) etc.
Inverters, converters
Aluminum
electrolytic capacitors
Aluminum electrolytic capacitors feature
high capacity and are used in all sorts of
power supplies, as well as in solar power
and wind power systems and similar.
Application examples:
Various types of power supplies,
solar and wind power generation
systems, etc.
Industrial & En
Inverters, converters
Film capacitors
These capacitors use various kinds
of plastic film as dielectric. They
are characterized by high reliability
and long service life.
Projected
renewable energy
generation in 2020
About
7,000
Application examples:
Industrial equipment such as
machine tools, conveyors, etc.
TWh*
2013: about 5,000 TWh
Power supply lines/
Communication lines
Surge arresters
Wind Power
Generator
nergy
Inverters, converters
AC/DC reactors for
power conditioners
Power conditioners that convert the
power generated for example from
sunlight use special coils called
reactors or reactor chokes for step-up
and grid connection purposes.
Application examples:
Grid-connection chokes, step-up chokes
A protection device using a
discharge tube filled with
inert gas. Protects power
supply lines and
communication lines from
lightning surges and similar.
Application examples:
Lightning surge
protection in
communication,
industrial and medical
applications etc.
Inverters, converters
Ferrite PE90 materials
for high-power
reactors and
transformers
This ferrite material boasts high
saturation flux density and low core
losses. It is optimal for use as core
material for transformers in power
electronics equipment rated for high
power levels.
Application examples:
Cores of reactors and transformers
for high-power applications
Power
supply circuits
Power supply
lines
Varistors
Smart meters
SAW filters
High-performance RF filter making
use of piezoelectric material. TDK
supplies products specially
developed for smart meters.
Application examples:
Transmit/receive circuitry in smart meters with automated
wireless recording function, etc.
A product made of metal
oxide. Protects circuits
from over-voltage caused
by lightning surges or
similar.
Application examples:
Lightning surge protection
in power conditioners etc.
*IEA World Energy Outlook 2013
Multilayer ceramic
chip capacitors soft
termination type
A layer of soft conductive resin is used for
the terminal electrodes of this capacitor.
This absorbs stresses caused for example by
board flexing, there by preventing cracks
from forming in solder joints.
Application examples:
Energy solutions requiring long-term
maintenance-free service (solar power/
wind power systems), base stations, etc.
2015-2016 TDK Company Profile
28
Application
Industrial & Energy
Helping to save energy and increase reliability
in the industrial equipment sector as well
TDK power electronics
products are all
around us
A stable power source with constant
voltage is essential for the proper
functioning of electric and
electronic products. TDK supports
these needs with an extensive range
of power supply solutions, including
high-efficiency front end power
supplies, AC-DC and DC-DC power
modules, compact DC-DC converters,
CVCC (constant voltage constant
current) power supplies, and more.
The lineup also comprises products
optimized for special applications,
such as medical equipment, railway
carriages, LED lighting etc.
Power supplies
High efficiency
AC-DC power supplies
More efficient power
supplies enable vital
energy savings
The process of converting,
transmitting and storing electrical
energy always involves certain
losses. One of the key aspects of
power electronics therefore is the
pursuit of higher efficiency. TDK
offers advanced solutions designed
with the next-generation energy
infrastructure in mind, such as
bidirectional DC-DC converters and
AC-DC power supplies for electrical
storage systems. In the area of
factory automation, our flip chip
bonding machines that reflect TDK's
original production technology are
much sought after.
These products operates universal AC input and
provides DC output.
Our wide spectrum products design to meet various
industrial applications.
Application examples:
Factory automation, process control,
test and measurement, medical equipment etc.
Power supplies
AC-DC power modules
Compact modules that
combine AC-DC
conversion, DC-DC
conversion and other
circuitry in a single module.
Power supplies
DC-DC power modules
Compact power supplies for DC-DC
conversion in industrial equipment.
Industry standard brick sizes are used,
realizing small dimensions, low profile,
and high power density.
Application examples:
Information and communication
equipment, industrial equipment,
railway carriages,
transport systems, etc.
29
Industrial & Energy
Application examples:
Various industrial
equipment,
communications
equipment, etc.
Power supply lines
Power line EMC filters
Projected
global market
for smart city
related services in 2030
About
120
Application examples:
Factory automation equipment,
solar and wind power generation
systems, etc.
trillion yen*
Power storage
systems
Power supplies
Energy
EMC countermeasure components
designed to prevent noise interference
from entering into or being radiated from
power supply lines. The lineup includes
various types for industrial equipment.
LED power supplies
Compact, highly efficient and highly
reliable power supplies optimized for
LED lighting and LED signage. Designed
to withstand dust and water.
Application examples:
Power supply for LED lighting,
LED signage, etc.
High-capacity
lithium ion
batteries
Flash storage
SSD/CF/CFast for
industrial applications
These rechargeable
batteries are
characterized by high
energy density. They are
also increasingly being
used for storing power
generated by solar or
wind power systems.
These are highly reliable flash
storage products incorporating
a proprietary SSD controller
developed by TDK.
Application examples:
Integration in factory
automation equipment and
various other industrial
equipment
Application examples:
Backup power supplies,
peak power cut/shifting
applications, etc.
Power conversion equipment
Bidirectional DC-DC converters
These power conversion devices can turn the DC current of the source
into a suitable voltage, and also perform power exchange between
the DC bus and the storage system.
Automatic mounter
Application examples:
Equipment for electrical energy storage systems, energy recovery, etc.
Flip chip bonding machines
Power conversion equipment
Power conversion equipment
AC-DC power supply for
battery charging applications
These constant voltage, constant current power
supplies are optimized for charging electrical
energy storage systems in commercial facilities or
small to medium buildings, serving for peak
power shifting and backup.
Application examples:
Storage systems for peak power shifting,
backup systems using batteries
* Nikkei BP Cleantech Institute,
"Smart City Data & Data"(July 2012)
Programmable CVCC power supplies
Ultra-compact CVCC (constant voltage constant current)
power supplies with high power density. Perfectly suited
for use in production facilities for semiconductors,
automobiles, plasma display panels, organic EL displays,
ultra-pure water and similar, as well as for measurement,
testing, and research applications.
High-precision automatic
mounter directly mounts
and bonds bare chips
(LED elements, ICs, etc.)
onto the substrate.
Application examples:
Factory automation
equipment
Application examples:
Various inspection and evaluation
devices (automatic test equipment),
semiconductor manufacturing
equipment, measuring instruments
2015-2016 TDK Company Profile
30
Relation to stakeholders
1. Contribution to the world by Technology
Design development
Development
Sales
Sales promotion
Value creation
in the value chain
Manufacturing
The TDK Group’s
The TDK Group’s CSR philosophy is to practice the corporate motto
TDK is a social entity supported by a wide range of stakeholders,
and local communities, and that, while engaging in communication
operations on the basis of the TDK Code of Conduct. By practicing
result contribute to the sustained development of the
Quality assurance
Production technology
Customers
SESUB technology is used in wearable
terminals, smartphones, etc.
The origin of TDK’s monozukuri is our founding spirit of creativity―“creating values not yet existing in the
world from the level of materials.” We inherit this spirit throughout the entire value chain, from development
to sales. It is the driving force behind our creation of products meeting the expectations of customers.
2. Development of Human Resources
Suppliers
Shareholders
and investors
TDK’s business
activities
TDK’s
Code of Conduct
CSR activities
Inheriting the creative spirit in the whole value chain
to create innovations
Local
communities
Employees
Important Areas of Activity
from a CSR Perspective
Nurturing global human resources through IMD training for
overseas managers
Nurturing global human resources through IMD training for overseas managers Started in 1997, the IMD
program will be held for the seventeenth time this year. The training has four objectives: (1) to make participants
understand TDK’s corporate philosophy (founding spirit), (2) to expand their horizons and viewpoints,
(3) to develop their leadership qualities, and (4) to widen their person-to-person networks.
31
The TDK Group sets important areas of activity from a CSR
perspective and promotes them on a daily basis in light of
“what society expects of us” and “in what fields we can
utilize our advantages and have a significant impact.”
Social
Econo
Enviro
CSR Philosophy
and thoroughly imbue corporate ethics. This means that we recognize
including customers, suppliers, employees, shareholders and investors,
with stakeholders, we promote CSR activities through TDK’s business
our corporate motto, we will enhance our corporate value and as a
company and the realization of a sustainable society.
3. Society and Environmental Considerations
in the Supply Chain
Upstream
companies
Suppliers
Procurement
Midstream TDK
companies
Suppliers
Buyers
Procurement
Continued
evolvement
of business
aspect
mic aspect
nmental aspect
Implement
corporate motto
Buyers
CSR internal auditor training as a supplier’s responsibility
As a midstream company, TDK has the position of both supplier and buyer. In order to fulfill our social responsibility
in the supply chain, we endeavor to raise the awareness of employees through CSR internal auditor training.
Contribute to culture and
industry through creativity
Enhance
corporate
value
Downstream
companies
Creation of
a sustainable
society
4. Symbiosis with the Global Environment
●
Activities in FY 2014
CO² emissions (environmental load) Reduction of CO² emissions through
from manufacturing operations products (environmental contributions)
1,068 thousand t-CO² 1,251 thousand t-CO²
Activities to be downsized
1. Contribution to the world by Technology
2. Development of Human Resources
3. Society and Environmental Considerations
in the Supply Chain
4. Symbiosis with the Global Environment
Promotion
of energy
saving
Emissions
caused by
production
activities
Activities to be expanded
Expansion of
contributed
products
CO2
emissions
Environmental Contribution of TDK Products (by Field)
Automotive (including HEV/EV)
135,000
t-CO²
Industrial equipment
533,000
t-CO²
CO2
contributions
Contribution on ICT
311,000
reducing CO²
emissions in the t-CO²
society through
products and
know-how
General household
electric appliances
272,000 t-CO²
Efforts to achieve carbon neutrality
The TDK Environmental Charter stipulates the environmental policy of the entire TDK Group, which aims to
contribute to sustainable development. Furthermore, in FY2012 TDK announced the TDK Environmental Action
2020 initiative, becoming the first company in the electronic industry to set the target of achieving carbon
neutrality.
2015-2016 TDK Company Profile
32
History with stakeholders
1935
The world’s first ferrite core
1958
Memory core for
parametron arithmetic element
1955
The Ulcon disc capacitor
1961
“Todenka” appears on the
Tokyo Stock Exchange’s signboard.
1965
Local subsidiary established in New York
Shiba-ku, Tokyo with the aim of producing ferrite core
1966
Synchro Cassette tapes put on sale
1937
Kamata Plant completed; mass production of ferrite cores started
1968
Joint venture established in Taiwan
1951
Production of ceramic capacitors started at Hirasawa Plant, Akita Prefecture
1972
Winchester Heads developed
1953
Synchro Tape, a magnetic recording tape, put on sale
1955
Ulcon, a disc capacitor, put on sale
1958
Paramistor, a parametron arithmetic element using memory cores
1959
1978
Video master tape using
AVILYN magnetic material
1972
Development of Winchester Heads
Tokyo Denki Kagaku Kogyo KK founded in Tamura-cho,
1935
33
1966
Synchro Cassette,
the first made-in-Japan cassette tape
Local subsidiary established in Dusseldorf
1978
Headquarters moved to 1-13-1 Nihombashi, Chuo-ku, Tokyo
VHS-format Super AVILYN Video Cassette put on sale
made of ferrite core, awarded Grand Prix at Brussels World Exposition
1980
Magnetic heads using amorphous material put on sale
First overseas office opened in Los Angeles
1982
Listed on New York Stock Exchange
Shares offered on Tokyo Stock Exchange over-the-counter market
1983
Name changed to TDK Corporation
1960
Yawata Plant opened in Ichikawa, Chiba Prefecture
1961
Shares listed on First Section of Tokyo Stock Exchange
1982
Listed on the New York Stock Exchange
Designated official supplier for the first IAAF World Championships in Athletics in Helsinki
1989
Local subsidiary established in Malaysia
1994
Local subsidiary established in Xiamen, China
2009
The IEEE Milestone plaque
2001
2012
Dysprosium-free magnet developed
Manufacturing and sales company for multilayer ceramic chip capacitors established in Suzhou, China
TDK R&D Corporation established as R&D center in the United States
1990
Technical Center completed
2005
TDK History Museum opened
2002
Outside director and corporate officer system introduced
Mikumagawa Plant becomes first TDK Group site to achieve zero emission
2004
First recording media maker to become Blu-ray Disc Founders member
Activities started to achieve zero emission in China
1986
Magnetic head maker SAE Magnetics (H.K.) Ltd. acquired
1989
Local subsidiaries established in Malaysia and Luxembourg
1990
Technical Center completed in Ichikawa, Chiba Prefecture
1991
Local subsidiary established in Thailand
1992
Recordable CD-R compact disc using organic colorant film put on sale
1994
High-density recording MR heads put on sale
2005
Amperex Technology Ltd. acquired (Hong Kong company manufacturing and selling polymer lithium batteries)
Lambda Power Group (power-supply business) acquired from UK company Invensys plc
TDK History Museum opened in Nikaho, Akita Prefecture
2007
TDK brand recording media sales business transferred to Imation Corp.
(US company manufacturing and selling recording media)
2008
EPCOS, a German electronic device maker, acquired through takeover bid
TDK-EPC Corporation established through corporate split
Local subsidiary established in Xiamen, China
“Development of ferrite materials and their applications” recognized as IEEE Milestone
1995
Plant established in Hungary
1997
Plant constructed in the Philippines for magnetic head production
1998
TDK Malaysia becomes first overseas plant to acquire ISO 14001 certification
2011
TDK Environmental Action 2020 initiative compiled as basic environmental plan; started in April 2011
1999
Green purchase started (sites in Japan)
2012
Dysprosium (Dy)-free magnet developed
2000
US magnetic head maker Headway Technologies Inc. acquired
2014
Ferrite Selected as One of "Top 100 Innovations in Postwar Japan"
2009
by the Institute of Electrical and Electronics Engineers (IEEE)
2015-2016 TDK Company Profile
34
Corporate social activities
Introduction to principal activities
IAAF World Championships in Athletics
TDK Orchestra Concert
Outreach (left) and open rehearsal (right)
The world’s top athletes compete once every two years
The IAAF World Championships in Athletics is
one of the three largest sporting events in
the world, along with the Olympic Games
and soccer’s World Cup. Since the endless
pursuit of records, the fair play of the
athletes, and the spirit of contest on a level
playing field are consistent with the
management philosophy that TDK strives to
attain, TDK became an official partner of the
first championships held in Helsinki in 1983
35
and has been a main sponsor (men’s bib
sponsor) of the tournament ever since.
The IAAF World Championships have seen
many new world records set in various events
and provided many memorable moments for
spectators around the world. The IAAF World
Championships in Athletics were held in
Moscow in 2013 and Beijing in 2015 and are
scheduled to be held in London in 2017.
Sponsored the Berlin Philharmonic Orchestra in 2013,
together with open rehearsal and outreach programs for students
The concept of the TDK Orchestra Concert is
based on the management philosophy of
TDK, the corporate motto of which is
“Contribute to culture and industry through
creativity.” We not only sponsor
performances by world-class orchestras but
also, since 2003, organize open rehearsal and
outreach programs every year so that young
people have the opportunity to experience
high-quality and emotive classical music,
which is a lingua franca of the world.
In 2013 the outreach program took
members of the Berlin Philharmonic
Orchestra to the city of Higashimatsushima in
Miyagi Prefecture, which suffered heavy
damage in the Great East Japan Earthquake
of 2011. There the orchestra members gave a
performance and engaged in musical
exchange with local students.
In the fall of 2014 TDK will sponsor a
performance by the Mariinsky Theatre
Symphony Orchestra and host an open
rehearsal as well. We will continue to
sponsor these concerts as part of our modest
social contribution activities conducted for
the general public.
Awards from society
Introduction to principal awards
received in recent years
TDK Named as One of Thomson Reuters Top 100
Global Innovators 2014
Ferrite Selected as One of “Top 100 Innovations
in Postwar Japan”
Global intellectual property strategy
Ferrite plays indispensable role in development of electric and
electronic industries in postwar Japan
In 2014 TDK was named as one of the
Thomson Reuters Top 100 Global Innovators
for the third consecutive year. On the basis of
its patent data, Thomson Reuters analyzes
intellectual property and patent trends and
annually selects companies and research
institutions as the top 100 global innovators in
terms of not only patent applications but also
their promotion of outstanding innovations
on a global scale. The selection is made
according to four criteria: the overall volume
of patents, success rate, globalization, and
influence (citations). Of these four criteria,
TDK received particularly high appraisal for
success rate and influence in citations.
On July 8, 2014, ferrite was selected as one
of the “Top 100 Innovations in Postwar
Japan” announced by the Japan Institute of
Invention and Innovation (JIII). The JIII was
choosing the top 100 in commemoration of
its 110th anniversary. On the basis of its
own surveys and the opinions of learned
persons, it selected innovations that had
achieved growth in Japan since 1945 and
made a substantial contribution to
industrial and economic development.
Thirty-eight innovations were selected for
the first announcement.
Ferrite has been an indispensable
material in the postwar development of the
electric and electronic industries in Japan. In
the 1950s it was used in wireless
communication devices, radio antenna
cores, and for the control of electronic
beams in cathode-ray tubes. In the 1960s
and 1970s it was used as the core material in
tape recorders, videotape recorders,
magnetic heads for floppy disc drive
devices, and magnetic tape for recording
media. Despite the fact that it was invented
before the war, ferrite was selected because
of its ongoing application and significant
contribution in a wide range of fields.
2015-2016 TDK Company Profile
36
Web contents
Introduction of Website Contents to Further Your Understanding of TDK
1
What kind of company is TDK?
2
3
How wonderful is TDK’s technology?
Check out TDK Digest, which explains TDK’s corporate
information and the electronic components industry
in an easy-to-understand manner, and various pamphlets
introducing our businesses.
Illustrated text explains everything from the basics of
electronic components to the latest technology in a
comprehensible manner. Lots of product information!
TDK Digest
Tech Mag
Want to see TDK videos?
Check out our videos on, among other things,
recruitment information, corporate profile,
advertisements, and open rehearsals for the annual
TDK Orchestra Concert.
TDK Channel
http://www.global.tdk.com/digest/
http://www.global.tdk.com/techmag/
What’s TDK?
TDK Brand Movie
Product Center
Open rehearsal for the TDK Orchestra Concert
http://www.global.tdk.com/news_center/tdk_channel/
http://www.global.tdk.com/news_center/publications/
37
http://product.tdk.com/en/
TDK Corporation
3-9-1 Shibaura, Minato-ku, Tokyo 108-0023, Japan
http://www.global.tdk.com