The development of next-generation vehicles for fully automated driving is gaining momentum, and the architecture of in-vehicle networks is beginning to undergo major changes.
In-vehicle Ethernet is attracting attention in automotive networks, and interfaces such as 100BASE-T1 (100Mbps) and 1000BASE-T1 (1Gbps), whose specifications are defined by the OPEN Alliance, are becoming popular. Recently, a new 10BASE-T1S (10 Mbps) has been added to this in-vehicle Ethernet, attracting a great deal of attention because of its ability to provide multi-drop connections.
This article introduces common-mode chokes and chip varistors that comply with OPEN Alliance specifications at the right time.

The advancement of digital technologies, such as the integration of AI capabilities and the enhancement of display and camera resolutions, has led to a continuous increase in the volume of data handled by digital devices like laptops and smartphones. This has driven the need for faster and higher-capacity signal transmission. However, the noise generated by these devices is also shifting to higher frequencies, necessitating countermeasures to mitigate interference with other devices and prevent signal degradation.

The TCM06U series, a compact common mode filter, is introduced as an optimal solution for noise suppression in high-speed differential signaling.

TDK has recently expanded its lineup of 3-terminal feedthrough filters, known as the "YFF Series."
With advancements in automotive electronic systems aimed at enhancing safety, comfort, and infotainment capabilities, there is an increasing demand for measures to prevent system malfunctions.
To suppress voltage variation and high-frequency noise, which can cause such malfunctions, numerous capacitors are typically employed. However, the trend toward miniaturization of these systems raises concerns about mounting space limitations due to the increased number of components.
To address these challenges, 3-terminal feedthrough filters, characterized by low ESL (Equivalent Series Inductance), are gaining significant demand. Their high noise suppression effectiveness is expected to reduce the number of components and improve performance characteristics.

TDK Corporation (TSE:6762) launches the EPCOS SurfIND series, a new range of current-compensated ring core double chokes for high currents and surface mounting (ordering code: B82725S2*A/B). With SurfIND, customers who prefer reflow soldering (e.g. sandwich packages in telecom equipment, industrial drives, etc.) but need high-current common-mode chokes (usually large and heavy) can now get an SMD solution. These components can filter common-mode noise for rated currents from 24 A to 36 A at a temperature of +70 °C. With additional cooling, even higher currents can be achieved. This is easy to implement as the top side can serve as a direct interface for a heat sink.

For applications with a voltage of up to 250 V (AC), the nominal inductance ranges from 120 µH to 820 µH across seven variants. With stray inductance of up to 1% of the nominal inductance, these chokes also dampen differential-mode noise. All components meet IEC/EN 60938-2 standards and share a compact footprint of 40 x 38 mm (L x W), with heights of 20.7 mm for A types and 22.3 mm for B types. Their typical resistance ranges from 0.78 mΩ to 2.21 mΩ. Rated inductance drops by less than 10% at rated current with DC magnetic bias at +20 °C.

SurfIND chokes are mounted on a plastic baseplate, with a ferrite core coated in epoxy to insulate it from the windings; both materials are UL 94 V0 approved. The special design of the connection wiring eliminates the need for adhesives while self-leading SMD leads ensure easy reflow soldering to PCBs.

As electronic devices become faster and operate at higher frequencies, capacitors used for noise filtering and decoupling applications require even lower ESL (Equivalent Series Inductance) characteristics.
Additionally, in automotive electrical systems, there is an increasing demand for low-ESL type products to improve safety and comfort and to meet the demands of infotainment.
This Solution Guide introduces various solutions utilizing TDK's advanced low-ESL components, the "YFF Series" 3-terminal feed-through filter.

TDK introduces tube magazines for various series of ring core chokes for automatic pick and place

TDK Meister is an application software for Windows®, that can search TDK electronic components and display graphs for their characteristics. Using TDK Meister, you can easily select TDK electronic components that are optimum for electronic circuit design and EMC counter measure. In this article, overview and major functions of TDK Meister are introduced.

The formal name of Windows(R) is Microsoft(R) Windows(R) Operating System.<br>Microsoft(R) and Windows(R) are registered trademarks of Microsoft Corporation in the United States and/or other countries.

With the spread of cloud computing and smartphones and the launch of 5G in 2020, the amount of data that moves on the internet is increasing as high-volume video and game data is added to existing documents, images, and sound data.
In addition, technologies are evolving, exemplified by AI, and a digital transformation (DX) is taking place as a result of the use of big data and the internet of things (IoT). To support these advances, however, large numbers of high-performance servers that can process large volumes of data will be needed. In conjunction with the increased performance of processors and various types of ICs, higher clock speeds of power supply ICs on server boards, high current power saving, miniaturization, noise countermeasures in data lines, and surge countermeasures have become urgent issues. Here, we introduce TDK products for addressing and solving these problems including the VLBU series of ferrite power inductors compatible with the high-efficiency needs of VR13 and VR14 applications, the FS series of DC-DC converters with embedded μPOL™, solutions using the ALT series of pulse transformers and ALC series of common mode filters and chokes, and chip varistors and ceramic transient voltage suppressors used for surge protection.

The individual components in variable-speed drives cause earth leakage currents that cumulatively result in the tripping of the RCD. By using the upgraded EPCOS LeaXield™ active leakage current filter, these earth leakage currents be drastically reduced.