This is an electric double-layer capacitor with a metal foil laminate film (EDLC/supercapacitors).Low-resistance electric double-layer capacitors (EDLC/supercapacitors) are effective as capacitors for providing supplementary power during peak output, backup during power supply loss, energy harvesting, or regenerative energy storage. They are thin and lightweight, which makes them appealing for use in mobile products.

NFC is an abbreviation of Near Field Communication; it is a type of short-range wireless communications.
NFC is a function that can perform data communications and authentication when two NFC-compatible devices are brought close together, and adoption in smart phones has been growing rapidly in recent years.
Increased use in peripheral devices including wearable terminals, such as smart watches, has also been observed.
NFC is used in many situations including cashless payment and authentication of connections with peripheral devices, and it is expected to be used for even more diverse applications as we move towards a touchless society.
This article introduces the main components used in NFC circuits: NFC antenna, magnetic sheet, LC filter inductor, single-end circuit balun, and electric double-layer capacitor (EDLC/supercapacitor).

The number of smartphones and other mobile devices that are compatible with NFC (Near Field Communication) is increasing. Thanks to the adoption of a newly-developed low-loss ferrite material, TDK’s MLJ series multilayer ferrite coils now offer improved communication properties which are ideal for NFC-equipped devices, while featuring compact package sizes.

PiezoListen is the world's first piezoelectric type speaker that supports a wide range. Thanks to a world leading thinness of 0.49 mm, it can fit almost anywhere. The product causes the object to which it is glued to vibrate and thereby become a speaker. Because the entire surface vibrates, the sound has wide directivity, and uniform sound can be enjoyed at any location. You can also listen to music from Piezo Listen ™ piezo speakers.

The high precision of piezoresistive sensors and their ability to measure absolute, gauge and differential pressure allow their versatile use in a wide range of applications.
For industrial equipment and machineries the information provided by the pressure sensors can be used to operate hydraulic or pneumatic equipment in the most effective way but furthermore connect to the new Industry 4.0 standards.
The increasing requirements in automotive for fuel efficiency and reduction of harmful emission demand for long-term stable and highly accurate sensors. Besides the media resistance, some of the application require the pressure sensors to be freeze resistant but most important the sensors need to provide a reliable signal over lifetime.
All applications place increasingly demanding requirements on the distinctive characteristics of the pressure dies and call for specific design features already on the die level. The TDK pressure sensors portfolio has been developed with a strong focus on increased sensitivity and high performance with a smaller die size. In addition, particular attention is paid to specific features for media resistance and easy process ability.

Chip varistors and TVS diodes are commonly used as over-voltage protection components.
Their structural design and manufacturing methods are completely different, but they offer similar characteristics with regard to protection from static electricity.
They generally can therefore be used interchangeably in a circuit, but there are cases where chip varistors are considered to be not suitable.
For historical reasons, many of the specification items given in catalogs and data sheets are different, which makes it difficult to compare characteristics based solely on these data, unlike in the case of capacitors and other general components.
The aim of this article is to clarify the difference between varistors and diodes and to introduce data that can be used to compare the two.

Whether for smartphones, vehicles, industrial controls, home appliances or gaming consoles – the future belongs to piezo-based solutions with haptic feedback. TDK offers a unique portfolio of products that are suitable for every imaginable haptic application.

Surface treatment is indispensable for the secure bonding of plastic parts. Activation with cold plasma is an equally simple yet elegant solution. Relyon Plasma, a subsidiary of TDK Electronics, offers the piezobrush® PZ2 – a handy plasma source based on the TDK CeraPlas™ piezo plasma generator.

TDK Corporation presents two evaluation kits that provide an initial impression of the varied possibilities of haptic feedback that can be realized with PowerHap™ piezo actuators.

The TDK ICP-101xx Barometric Pressure Sensorfamily is based on MEMS capacitive technology which provides ultra-low noise at the lowest power, enabling industry leading relative accuracy, sensor throughput, and temperature stability.