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) announces the X1 capacitors of the EPCOS B3291xH/J4 series for power line filtering of electromagnetic interferences (EMI) in demanding automotive and industrial applications with a rated AC voltage of up to 480 V. Applications that are exposed to harsh climatic conditions such as PV inverters and EV onboard chargers (OBCs) can benefit from the new X1 capacitors’ high resistance to high humidity environments. With the ability to continuously handle a DC voltage of 1000 V, this series is a dedicated solution for DC EMC of high-voltage EV platforms.

The X1 capacitors are THB-tested (temperature, humidity, bias) at +85 °C, 85% relative humidity for 1000 hours at 380 V (AC) and 1000 V (DC), and they can operate at temperatures up to +110 °C.

Featuring self-healing properties, the series covers capacitance values from 15 nF to 10.0 µF and boasts a compact design, with dimensions ranging from 18.0 x 10.5 x 5.0 mm to 57.5 x 57 x 45 mm, depending on the capacitance. Lead spacings vary between 15 mm and 52.5 mm, with the largest versions equipped with 4 pins for enhanced mechanical stability on the PCB. The series is certified according to ENEC, UL, and CSA standards.

TDK Corporation (TSE:6762) announces the launch of the EPCOS B3292xM3/N3 series of X2 EMI suppression capacitors. These new components are 20% smaller than previous models and meet Grade III Test B standards for temperature, humidity, and bias (THB). Their compact size and enhanced durability suit space-constrained, high-humidity environments, especially for "across-the-line" applications in automotive and industrial settings.

The capacitors offer lead spacings from 15 mm to 37.5 mm and dimensions ranging from 18.0 x 5.0 x 10.5 mm to 42.0 x 14.0 x 25.0 mm (L x W x H), with capacitance values from 0.1 µF to 4.7 µF. Designed for harsh environments and AEC-Q200 compliant, the B3292xM3/N3 series is commonly used in automotive on-board chargers (OBCs), as well as industrial systems such as uninterruptible power supplies (UPS) and hybrid inverters for energy storage systems (ESS).

To meet Grade III Test B standards, they are tested at +85 °C and 85% relative humidity and subjected to rated AC voltage stress for 1000 hours (with lead spacing of 22.5 mm or more) or 500 hours (with 15 mm lead spacing). The components are rated for an AC voltage of 305 V and can handle a maximum DC voltage of 630 V continuously. With an operating temperature range of -40 °C to +110 °C, and self-healing properties due to their metalized polypropylene (MKP) dielectric, the B3292xM3/N3 series offers long-term reliability.

With its compact size and advanced durability, the B3292xM3/N3 series offers a reliable, high-performance solution for EMI suppression, helping engineers save space and maintain reliability in demanding environments.

On Board Chargers (OBCs) installed in electric vehicles are becoming increasingly powerful, with an output power of 22 kW. Even at higher power output levels, it is not acceptable to increase the size of the OBC itself, so compact design is required. Capacitors for the resonant circuit function are required to have high withstand voltage and low loss products that can withstand higher power densities than conventional products.
In order to meet this demand, TDK has released a new autograde C0G MLCC series with a rated voltage of 1250 V.

Through an example of the operation of a resonant capacitor in an LLC resonant converter, we will introduce why we recommend a 1250V rated C0G MLCC.

TDK Corporation introduces the xEVCap, a standardized and modular DC link capacitor design for powertrain inverters in passenger cars, commercial and off-highway vehicles, and machinery tools. Typically, such capacitor designs are fully customized, making the development time-consuming and practical only in large production volumes. In addition, if the customer requirements change during the project, this can further increase the time required for capacitor development and thus delay the overall project.

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.

With the increasing market for electrified vehicles (EVs), the demand for on-board chargers (OBCs) is growing fast. OBCs open up the possibility to charge the car not only at fast-charging DC stations but also with AC sources in a reasonable time. Such systems are currently going up to 22 kW with operating voltages up to 800 V. The function of the OBC is to convert the AC voltage from an external source to a specific DC voltage that is based on the requirements of the battery management system. By this, a battery-saving and fast charging process can be reached. Especially in remote areas without sufficient fast DC charging infrastructure, OBCs are essential to make EVs more attractive.
Due to the complexity of such systems, the OBC needs a certain bulk capacitance to stabilize the DC voltage that is charging the battery. Aluminum electrolytic capacitors are an attractive solution here since they can fulfill the key requirements, such as high voltage ratings of up to 500 V, large capacitance of up to 820 µF and high ripple current capabilities at an operating temperature range of -40 °C to 105 °C.

High energy, reliable and volumetric efficient inverters are essential to reducing emissions of vehicles based on 48 V technology. DC-link capacitors can significantly contribute to this target by reducing parasitic losses and increasing thermal efficiency. High inverter powers can be theoretically achieved with multiple capacitor connections. However, a high number of parallel-connected parts also increase the complexity of the system stability. In the field of Aluminum Electrolytic Capacitors, the Hybrid Polymer technology offers higher ripple current densities by a factor of, e.g., 5x compared to standard Liquid Electrolyte technology. By applying the Hybrid Polymer technology to the large axial capacitor can sizes, with solid mechanical construction and special thermal dissipation feature, a compact DC-link solution with a reduced amount of capacitor and minimized thermal escalation risk through stable and efficient thermal design can be achieved.

Various frequency converters for pumps and compressors are used in the petrochemical industry for extracting and producing oil and gas, which leads to a large load of the grid with harmonics. This problem can be solved with EPCOS PQSine®.

Find the optimal products for you based on the capacitance, rated voltage, and features of each capacitor.

Find the optimal products for you based on the applications and product types.

Find the optimal products for you based on the product type, performance, temperature and useful life.