TDK Corporation (TSE: 6762) presents ModCapTM HF, a modular capacitor concept for DC link applications that is able to work at very high switching frequencies. The six newly developed power capacitors of the B25647A* series are available for rated voltages from 900 V to 1600 V and cover a capacitance spectrum from 640 µF to 1850 µF. Depending on the type, the rated currents range from 160 A to 210 A with a maximum permitted hot spot temperature of 90 °C.

In recent years, wireless audio has become more commonplace and even the norm in many of our everyday products. The use of network audio, which does not use conventional media sources such as compact discs (CDs), is also expanding due to the increase in sound source data from high-resolution audio and subscription-based music distribution services. New audio usage is often centered on smartphone-based services that provide audio through the smartphone to speakers and earbuds [earphones, earpods, etc.] via Bluetooth connectivity. These two use cases for audio output have come to dominate.
The recent mass implementation of True Wireless Stereo (TWS) within earbuds, with their comfortable cable-free non-tangling fit, has yielded vastly improved sound quality over traditional Bluetooth audio technology. TWS also comes with the ability to cancel external noise (isolation) which results in quieter playback. This feature allows users to use TWS-based devices without concerns of the sound being “broadcasted” to surrounding areas.
Additionally, Bluetooth connected speakers, which also do not require cables for signal transmission, allow for unfettered placement of playback devices and speakers. These mobile speakers, with their built-in amplifiers, can operate on battery power and be completely portable.
Bluetooth enabled audio devices are easy to use, easy to connect to and have many advantages. However, since they require a wireless signal, they can be susceptible to problems that do not occur with cable-connected audio devices.
This article describes phenomena that can cause problems within Bluetooth audio designs and will provide examples of potential countermeasures.

TDK offers a full suite of sensors that are perfectly suited for drones of all types from consumer/prosumer models to industrial units.
 
In just a few years, drones have become indispensable in one application after another, including such diverse areas as agriculture, real estate and cinematography. For all this success, drones still have almost unlimited potential given their suitability for a wide variety of uses including delivery, inspection, search & rescue, monitoring, and mapping, to name just a few.
 
Fundamental to drone utility is sensor technology. Drones rely on diverse sets of sensors for two broad purposes. First for their own functionality, notably flight and navigation, and second, for their ancillary capabilities – cameras for vision, motion detectors to sense activity, heat sensors to detect temperature, and so on.

One of the well-established key requirements in solar inverters is their high efficiency. But also, their costs, size and weight are subject to continuous improvements. One approach to better fulfil all these demanding requirements simultaneously is the use of multilevel topologies.
The main advantages of switching between multiple voltage levels are lower voltage stress for the semiconductors and lower ripple stress for the power chokes.
This means that lower-voltage semiconductors can be used, which are typically cheaper.
Lower ripple stress for the chokes makes smaller and thereby lighter and cheaper choke designs possible.
The flying capacitor topology is a multilevel topology, that is an interesting choice especially for (but not limited to) the booster stage of a solar inverter. As its name implies, it needs a capacitor as a key element. This article describes and compares possible TDK solutions therefor.

In recent years, optical transmission systems have been adopted at high rate because of the increase in capacity and speed of communication.
Among them, a semiconductor laser that is positioned as an important component requiring a temperature sensor to keep the ambient temperature constant. A thermocouple can be used as a temperature sensor, but the NTCWS series of NTC thermistor is more suited to this application.

The NTCWS series can be mounted by wire bonding, achieving small size, high accuracy and unquestionable reliability.

TDK Corporation (TSE:6762) presents the EPCOS B72307S0* (StandarD S07 Compact Series) and B72310S0* (StandarD S10 Compact Series) series of extremely compact, leaded disk varistors. The new varistors cover a wide voltage range from 115 VRMS to 460 VRMS in the StandarD S07 Compact series and from 130 VRMS to 680 VRMS in the StandarD S10 Compact series. The maximum surge current capability of a single pulse current (8/20 µs) is up to 1200 A for the StandarD S07 Compact types, and up to 2500 A for the StandarD S10 Compact types. They offer a multiple surge current capability of 500 A (StandarD S07 Compact) or 1500 A (StandarD S10 Compact), according to UL 1449, 4th edition, type 5 listed. The varistors can be operated up to an ambient temperature of 105 °C without derating.

TDK Corporation (TSE:6762) presents the new B78302A* series of compact EPCOS transformers with innovative E5 cores for ultrasonic applications. It comprises three types with transformation ratios between 1:1:10.8 and 1:1:15.3. Depending on the type, the new transformers in SMD design offer inductance values between 2 mH and 4 mH and are suitable for frequencies from 50 kHz to 300 kHz. The AEC-Q200 qualified components have very compact dimensions of only 8.1 x 7.0 x 7.0 mm and are shielded by a counter-winding for better interference suppression. The permissible temperature range is between -40 °C and +125 °C.

The SPM series power inductors are the metal composite type wire-wound inductors that have the coils integrally molded with metallic magnetic powder. Compared to ferrite-base wire-wound inductors, the SPM series inductors realize larger current, lower Rdc, smaller size and superior DC bias characteristic. In addition, they ensure low magnetic flux leakage and are effective as a means to suppress acoustic noise of the coil. This article introduces the structure, features, and application of these products, and other information that helps you in an easy-to-understand way.

TAS4240 is a compact, cost-effective, redundant, half-bridge TMR-based sensor for angle and position detection. This article clearly describes and explains the features of TDK's TMR sensors, thus giving valuable information to our customers.

TDK has a lineup of multilayer chip varistors that protect equipment for malfunction and failure due to ESD (electrostatic discharge), and we have long contributed to solving customer ESD problems.
Recently, however, although multilayer chip varistors have been effective in the past, they have been unable to provide sufficient protection as customer devices have become smaller, lighter, and more sophisticated.
To investigate the cause of this problem, we conducted ESD tests assuming the miniaturization of customer equipment.