TDK Corporation (TSE: 6762) introduces the new B43655 and B43656 series of aluminum electrolytic capacitors designed specifically for DC links in on-board chargers (OBCs) of electric vehicles. Both series are optimized for forced cooling operation, supporting the growing trend toward higher voltages and currents in next-generation OBC platforms. Due to their compact design and high ripple current capability, such capacitors are commonly used in applications requiring maximum efficiency and reliability in confined spaces. 

With a high voltage rating of 475 V and 500 V, as well as capacitances ranging from 110 µF to 880 µF, the B43655 series meets the requirements of 800 V battery architectures for modern e-mobility applications. Designed for base cooling and high ripple current density, these components offer a useful life of more than 3,000 hours at +105 °C. They also feature a maximum ripple current of 3.29 A at +105 °C and ESR values down to 100 mΩ to minimize power losses. The B43656 series, rated at 450 V, handles even higher currents of up to 4.42 A at +105 °C for demanding high-power OBC topologies. 

Both series are qualified according to AEC-Q200 Rev. E and are made with RoHS-compliant materials. They are available in compact snap-in designs ranging in diameter from 22 mm to 35 mm and in length from 25 mm to 60 mm, depending on the capacitance and voltage class. The B43655 and B43656 capacitors provide design engineers with robust, future-ready solutions for on-board chargers in electric vehicles, thanks to their enhanced electrical performance and reliability. 

The new B43655 and B43656 series will also be implemented in TDK’s web-based AlCap Useful Life Calculation Tool. 

• Guarantees operation in high‑temperature environments up to +175 °C
• Adopts AgPd terminals compatible with conductive‑glue mounting
• AEC‑Q200 compliant (automotive grade)

TDK Corporation (TSE:6762) announced today that it has expanded its NTCSP series of NTC thermistors. These components are designed for conductive‑glue mounting for operation in high‑temperature environments up to +175 °C. Mass production of this series began in February 2026.

To drive higher automotive performance, more powerful and heat-resistant power semiconductors are required. Consequently, electronic components mounted in these power modules must also be able to withstand higher temperatures. While the maximum guaranteed operating temperature for TDK's existing products was +150 °C, the company has now expanded its range to cover up to +175 °C.

This product is a high‑reliability device compliant with AEC‑Q200 and realizes a wide operating temperature range of -55 °C to +175 °C. It can be used for various temperature detection and temperature compensation applications across low to high temperature ranges. It is suitable for automotive applications such as anti‑lock braking systems (ABS), transmissions, and engines. By adopting AgPd (silver‑palladium) terminals compatible with conductive‑glue mounting, this series can operate at +175 °C; this was difficult to achieve with conventional solder mounting.

The NTCSP series offers 10 kΩ and 100 kΩ types in a 1.6 x 0.8 mm package.

TDK will continue to develop NTC thermistors to meet a wide variety of needs, including expansion of chip sizes, thermistor characteristics, and operating temperature ranges.

TDK Corporation (TSE: 6762) announces the B3271xP series of DC link film capacitors, offering high thermal robustness for demanding automotive and industrial power electronics. With a maximum operating temperature of +125 °C and no power derating up to +105 °C, the series ensures stable capacitance and reliable energy buffering even in tightly packed inverter environments. This performance is particularly relevant for xEV traction inverters, onboard chargers, and DC-DC converters, where elevated ambient temperatures and continuous ripple loads are common.

The B3271xP series covers capacitance values from 0.47 µF to 110 µF and rated DC voltages from 600 V to 1200 V, enabling flexible design-in for frequency converters, high-end industrial power supplies, and solar inverters. Its polypropylene (MKP) dielectric provides inherently low losses, high ripple current capability, and excellent self-healing behavior, maintaining efficiency and extending system lifetime under harsh electrical stress.

Engineered with a flame-retardant plastic case and epoxy sealing (UL 94 V-0), the components are available with lead spacings of 27.5 mm, 37.5 mm, and 52.5 mm, and in 2-pin or, on request, 4-pin configurations to support mechanical stability and low-inductance layouts. Typical ESR values down to the single-digit milliohm range and high current capability at 10 kHz contribute to robust DC link filtering and reduced thermal rise.

Compliant with AEC-Q200E and UL 810 (construction), the B3271xP series delivers the reliability expected in automotive platforms while supporting global industrial requirements. Its combination of high-temperature endurance, broad electrical performance, and compact dimensions helps engineers optimize converter designs for efficiency, stability, and long-term durability.

For the B3271xP series, TDK provides various SPICE model libraries and the web-based Capacitor Life And Rating Application (CLARA) tool.

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.