Discover technologies and solutions!

"Technological innovation through capacitors"
A story of constantly evolving mobile
devices and capacitors, which enable device
miniaturization and performance enhancement


Capacitors are electronic components, some in very small sizes. You may have heard the names before. Do you know where they are used and what their roles are? We will explore the world of capacitors, which are essential in our lives today.


  • ▶︎About 1,000 pieces fit in the palm your hand! They play important roles behind the scenes.
  • ▶︎Our fundamental question: What are capacitors?
  • ▶︎Here is the microscopic world of capacitors that are as small as a sand grain

About 1,000 pieces fit in your hand! They play important roles behind the scenes.

Do you know what these are?


▲Comparison with a ruler with markings every 0.5 mm

This is a photo of multilayer ceramic capacitors (MLCCs). A large number of them are used in your smartphones.

MLCCs are essential electronic components for mobile devices, home electric appliances, and automobiles.

One smartphone device uses more than 1,000 micro-sized MLCCs. It's a world of wonder! Performance enhancement of semiconductors has been evolving smartphones, which has led to growing requirements for MLCCs.

Our fundamental question: What are capacitors?

Capacitors are fundamental electronic components, which are used in various electronic devices.
It has two major functions: temporary storage of electricity, and noise filtering in electric circuits.

Mobile devices and other electronic products operate by electric energy, but they first regulate the current and voltage to suit the requirements of each device, rather than directly using the energy supplied from the power source, such as wall outlets or batteries.
In the case of a smartphone, when apps start, the semiconductor circuit instantaneously consumes a large amount of electricity (electric current), which is supplied from capacitors.


▲MLCC structure — Some products have a dielectric as thin as 0.1µm or less

In addition to MLCCs, various types of capacitors such as aluminum electrolytic capacitors and film capacitors, are used for different purposes.
The demand for MLCCs is estimated at approximately 4 trillion pieces per year, which is projected to grow up to 6 trillion pieces in several years. (Forecast by TAIYO YUDEN)

MLCCs are electronic components with enormous demand. How is an MLCC structured?

To put it simply, a capacitor such as an MLCC has a dielectric sandwiched between two metal plates (electrodes). Applying a voltage between these plates stores electrical charges.
One indication of capacitors' performance is the capacitance.
Capacitance is determined by
(1) Dielectric constant, a coefficient of the dielectric material,
(2) Area of the electrodes, and
(3) Thickness of the dielectric.

More details about capacitors:


▲Structure of a Capacitor and How to Increase Capacitance

Microscopic world of capacitors as small as a grain of sand

A single smartphone contains more than 1,000 MLCCs.
How small is each MLCC?

Currently, the smallest MLCC TAIYO YUDEN provides to the market is 0.25 mm in length and 0.125 mm in width, and the thinnest MLCC has a thickness of 0.064 mm!
This is the size of a sand grain, which is 0.0626 (1/16) to 2 mm. Now you know how small they are.

How can such small MLCCs be created?
There are three technologies that have enabled TAIYO YUDEN to miniaturize MLCCs. (See the figure below.)


▲The three technologies of material, printing, and lamination are the keys to product miniaturization.

TAIYO YUDEN utilizes proprietary techniques in these three critical processes in MLCC manufacturing.
We develop materials on our own, and with our ultra-fine and even materials, we produce dielectric sheets in a thickness of 1µm (1/1,000 mm) or less, which is approximately 1/100 the thickness of a human hair.
In the world's capacitor industry, only a handful of companies conduct research and development from the material phase and TAIYO YUDEN is one of them.

With a range of technological competencies, including material development, high-precision printing, and lamination technology, we bring you top-level products in the industry featuring ultra-small, ultra-thin, and ultra-large capacitance.

Introduced Technologies

For more details,
please visit TAIYO YUDEN website.