TDK Corporation (TSE:6762) expands its B409x series of SMD hybrid polymer aluminum electrolytic capacitors with a design that can withstand mechanical vibrations of up to 30 g (MIL-STD-202, Method 204). This is achieved by four posts that come out of the base plate of the component and stabilize the can in the event of mechanical shocks and vibrations. The design is offered with part number suffix 100 (standard types: 000), and these components are generally used in demanding automotive and industrial applications.

The surface-mount components are available in different voltage ratings between 25 V and 80 V, and capacitance values range from 56 µF to 1100 µF. Their diameter is 10 mm, and their height ranges from 10.2 mm to 16.8 mm, providing a temperature range of -55 °C to +105 °C (B40950) and up to +150 °C (B40910). Because of the polymer, the B409x series offers a low ESR of 10 mΩ to 33 mΩ and high ripple current capabilities of 2.8 A to 5.8 A. Their useful life is more than 4000 h at a temperature of +125 °C at the rated voltage and ripple current. The industrial series B40950 has a useful life of more than 10.000 h at a temperature of +105 °C at the rated voltage and ripple current.

The web-based AlCap Tool quickly and easily calculates accurate lifetime under application-specific conditions.

• New 1000 V product with a capacitance of 22 nF in the 3225 case size with C0G characteristics of low-resistance soft termination type for automotive and general applications
• Contributes to greater reliability in applications, reduction of component count, and miniaturization
• Qualified based on AEC-Q200

TDK Corporation (TSE: 6762) announced today that it expanded the BCL3520FT series of small power inductors for automotive power circuits (3.3 x 3.5 x 2.0 mm – L x W x T). Mass production of the product series began in December 2025.

Inductors like the BCL3520FT series are used in efficient power supply circuits of ECUs. High efficiency is necessary to reduce power losses because ever more ECUs for ADAS applications are being deployed in cars. This drives the development of low-loss, high-functional power inductors. These components must be compact, as they need to be mounted in the limited space of the ECU. High reliability is also crucial, as they must operate in harsh, high-temperature environments.

Thanks to TDK’s proprietary metallic magnetic materials and structural designs, the BCL3520FT series achieves industry-leading* electrical properties for 0.47-μH inductors with such small dimensions. Regarding DC resistance, a low 5 mΩ (typ.) resistance has been achieved, approximately 15% lower than equivalent products available on the market. Using a flat wire instead of a standard round wire reduces heat generation and power loss. Therefore, the components achieve a rated current (Isat) of 10 A, approximately 28% higher than other products, facilitating these products' uses for a range of applications. These high-reliability inductors can be used in high-temperature environments up to +155 °C, the upper guaranteed temperature limit.

TDK will continue to contribute to society with its broad lineup of low-loss, high-efficiency power inductors for many different high-function applications aimed at achieving autonomous driving through the development of products that meet market needs.

* As of December 2025, according to TDK

TDK Corporation (TSE:6762) introduces the new S series inrush current limiters (ICLs), comprising the S30 (ordering code: B57130S0*M000) and S36 (B57136S0*M100) families of NTC thermistors. With maximum steady-state currents of up to 35 A and energy absorption capabilities of up to 750 J, the components are optimized for high-power applications that demand reliable suppression of inrush currents. Typical applications include switch-mode power supplies, frequency converters, photovoltaic inverters, uninterruptible power supplies, and soft-start motors.

The S30 series features disk diameters of 30 mm, 7.5 mm lead spacing, and maximum power handling of 19 W, while the larger S36 series (disk diameters 36 mm; lead spacing 19 mm) extends this capability to 25 W. Both variants are rated for a wide climatic category of 55/170/21 (IEC 60068-1). Depending on type, the components cover resistance values from 2 Ω to 20 Ω, permissible capacitances up to 13,050 µF at 240 V (AC), and continuous current ratings from 10 A to 35 A.

By offering stable performance with low power loss during continuous operation, the new S30 and S36 series enable designers to improve system efficiency to meet higher energy consumption standards. Users will benefit from a lower electricity bill over a conventional solution using fixed power resistors together with relays.

TDK offers a web-based NTC ICL selection tool that gives users recommendations for a suitable NTC ICL for their applications.

• Investment of a double-digit million amount
• State-of-the-art capabilities for measuring electromagnetic compatibility (EMC)
• Focus on automotive and industrial applications

TDK Corporation builds a new EMC laboratory in Regensburg. It replaces the existing accredited laboratory, which is more than 60 years old, at a new location. The facility will offer internal and external customers state-of-the-art capabilities for measuring electromagnetic compatibility (EMC). The groundbreaking ceremony for the new laboratory has now taken place.

TDK is investing a double-digit million amount in the construction of the new EMC laboratory and thus also in Germany as a business location. The new laboratory will have a total area of almost 1,700 square meters, 1,100 square meters of which will be used for laboratories and measuring stations. A showroom and a large customer area with meeting rooms are also planned.

The new facility replaces the existing 700-square-meter laboratory, which was developed from the semi-absorber hall built by Siemens in 1962, the first hall of its kind in Europe at the time. “The size and equipment of the new laboratory alone will enable significantly more measurement projects,” says Dr. Stefan Weber, project manager for the construction of the new EMC laboratory. “With the new EMC laboratory, we are ideally positioned for the next 60 years of successful development in Europe. It creates a central location for designing products and solving problems together with customers. It is therefore an important tool for customer retention.”

Focus on automotive and industrial applications

The heart of the laboratory is a new ten-meter semi-anechoic chamber in which vehicles and high-power industrial applications can be measured. It is complemented by a new three-meter full absorber chamber for RF and radio applications, which offers the fastest measurement methods at the highest frequencies, and by a compact chamber for measuring automotive components such as control units or onboard chargers. This chamber is equipped with absorbers that are only ten centimeters deep—the most compact design currently available on the market.

Showroom for TDK absorber technology

All chambers feature state-of-the-art TDK absorber technology and measurement systems. The EMC laboratory thus also serves as a showroom for the technologies and services offered by TDK in this field, ranging from the dimensioning and design of the halls to their equipment and ready-to-use concepts.

The new EMC laboratory is scheduled to be completed in the middle of 2026. TDK operates further accredited EMC laboratories in Austin (Texas), Tokyo, and Shanghai. 

Dr. Stefan Weber, Project Manager for the new EMC laboratory, Dr. Werner Lohwasser, CEO & COO TDK Electronics, Gertrud Maltz-Schwarzfischer, Lord Mayor of Regensburg, Christoph Michl, Office for Economy and Science Regensburg, architect Thomas Bauer, and building contractor Johann Feldbauer.

• New 1000 V product with a capacitance of 22 nF in the 3225 case size with C0G characteristics of low-resistance soft termination type for automotive and general applications
• Contributes to greater reliability in applications, reduction of component count, and miniaturization
• Qualified based on AEC-Q200

TDK Corporation (TSE:6762) announced today it expanded its CN series of low-resistance soft-termination MLCCs. This product achieves an industry-leading* 22 nF capacitance in the 3225 case size (3.2 x 2.5 x 2.5 mm – L x W x T) and C0G characteristics at 1000 V. Mass production of the product series began in September 2025. The capacitors of the CN series are industry-first products that are equivalent to regular products in terms of their terminal resistance due to the optimization of their resin electrode structure.

In recent years, there has been an increase in the use of multiple resonance capacitors placed in series-parallel circuits for resonance applications such as LLC resonant circuits and wireless charging. As applications become more powerful, they require more resonance capacitance, which increases the demand for high-voltage, large-volume capacitors. To improve reliability in these applications, components with resin electrodes effectively prevent placement cracks resulting from external stress. However, the increased resistance value of resin electrodes has been an issue.

This led TDK to develop the CN series with optimized resin electrode structures, resulting in significantly lower resistance values. In addition to the low losses and capacitance stability over temperature and voltage variations of C0G products, these resin electrode structures achieve both high reliability against external stress and reduced loss, making them ideal for use as resonator and snubber capacitors. 

The optimization of product and process designs has made it possible to manufacture these products, which helps increase reliability and application to high-voltage circuits and enhances the reliability of the applications. TDK will continue to expand its product line to meet the needs of its customers.

* As of September 2025, according to TDK
 

TDK Corporation (TSE:6762) presents CarXield (ordering code: B84252x), a standardized EMC filter series for automotive inverters for 500 V and 1000 V, which can significantly reduce development time for system integrators. This product enables rapid market entry for mid-sized e-mobility manufacturers with validated, compact EMI solutions that meet automotive standards and are immediately available through streamlined, standardized manufacturing processes. By mitigating inverter-to-battery interference, CarXield enhances overall powertrain EMC performance and simplifies compliance for electric drivetrain applications.

Designed to suppress inverter-generated noise on battery lines, which is crucial for both electromagnetic immunity and emission compliance, CarXield ensures stable performance in xEV platforms. The components measure 140 x 59 x 50.0 mm (L x W x H) and cover 500 V and 1000 V systems with rated currents up to 400 A at ambient temperatures of +85 °C, and transient peak currents up to 1000 A. The typical DC resistance is only 0.1 mΩ. Based on nanocrystalline core technology and incorporating X2 or Y2 class capacitors with integrated passive discharge, these filters are engineered for durability under severe ambient conditions.

Thanks to its availability with or without copper busbars and optional passivated finishes, CarXield supports flexible system integration, allowing developers to adapt thermal and spatial designs without compromise. It is certified to automotive standards such as AEC-Q200 and validated against MBN LV 124 profiles.

Further information on the products can be found at www.tdk-electronics.tdk.com/en/carxield

• The component achieves a high inductance of 10 μH despite a small 1206 case size 

• High impedance characteristics over a wide frequency range of 10 MHz to 200 MHz 

• DC resistance reduced by approximately 70%, rated current increased by 1.7 times 

TDK Corporation (TSE: 6762) has expanded its PLEC69B series (1.2 x 0.6 x 0.95 mm – L x W x H) of thin-film inductors, used for separating the data signal from the power in optical transceivers in AI data centers. Mass production of these components began in August 2025. 

The widespread adoption of AI led to a skyrocketing demand for high-speed and high-capacity optical transceivers. Bias-tee circuits, which are used in these transceivers, are designed to superimpose signals and power on a single transmission line. Because of the impedance characteristics, inductors like the PLEC69B separate the signal from the power in bias-tee circuits, preventing the signal from flowing into the power side. 

The new component achieves the highest standard performance* for an inductor with 10 μH in 1206 size with TDK’s proprietary metallic magnetic materials and structural designs. With a wide frequency range of 10 MHz to 200 MHz, signals can be separated from power with high impedance, which improves communication quality. Additionally, the DC resistance of 1.4 Ω (typ.) is approximately 70% lower than that of similar products on the market. This reduces power loss and heat generation. The rated current (I_sat) of 0.2 A is also 1.7 times higher than that of similar products. In addition, the smaller dimensions require less space on the PCB. The PLEC69B ensures high reliability with an upper operating temperature limit of +125 °C.  

TDK will continue contributing to its extensive lineup by developing products to meet market needs for lower power consumption and high-speed communications designed for data centers, servers, as well as optical communication devices and edge devices, supporting the AI market in anticipation of significant future growth.  

*Source: TDK, as of August 2025