Capacitors
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Product Lineup
Multilayer Ceramic Chip Capacitors
Aluminum Electrolytic Capacitors
Film Capacitors for PCB Mounting and Motor Run
Components for PFC and Harmonic Filtering
Product Lineup
Disc Type Capacitors with Lead (High Voltage Ceramic Capacitors)
MLCC with Dipped Radial Lead
3-terminal Filters
Ultra High Voltage Ceramic Capacitors
CeraLink® Capacitors
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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.
Products & Technologies
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.
TDK Corporation (TSE:6762) has expanded its line of CeraLink capacitor series B58043 in the EIA 2220 footprint by adding two new 900 V types – one with standard termination (B58043I9563M052) and one with soft termination (B58043E9563M052). As electric vehicles with 800 V battery voltage are becoming more popular, these new components are obvious candidates because their optimal operating point is exactly at this voltage. While the existing 500 V CeraLink series is aimed at 400 V inverters equipped with gallium nitride (GaN) transistors or silicon MOSFETs, the new 900 V parts with a withstanding voltage of more than 1 kV are targeted at 800 V inverters equipped with silicon carbide (SiC) MOSFETs or silicon IGBTs.
TDK Corporation announces the EPCOS B32377G, a new series of three-phase AC filter capacitors in delta connection filled with nonflammable nitrogen gas instead of the soft polyurethane resin used in the existing series. Read more.
Applications & Cases
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.
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®.
Solution Guides
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.
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.
In resonant circuits used for wireless chargers and DC-DC converters, film capacitors have traditionally been used. However, advancements in the capacity expansion and high voltage resistance of Multilayer Ceramic Capacitors (MLCCs) have made it possible to replace film capacitors with MLCCs in these applications. Switching from film capacitors to MLCCs offers benefits such as miniaturization and reduced losses.
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TDK Product Features
TDK offers a large selection of highly reliable capacitors ranging from miniaturized MLCCs (multilayer ceramic chip capacitors) used in smartphones and cars to large film power capacitors that are essential for power-saving energy infrastructure systems such as power factor correction (PFC) or high-voltage DC (HVDC) power transmission installations. There is a broad range of aluminum electrolytic capacitors found in many applications such as ECUs in automotive electronics, uninterruptible power supplies, and frequency converters for industrial drives and wind turbines, as well as electric double-layer capacitors (EDLCs), which are optimal for applications including peak output auxiliary power supplies and energy harvesting electricity storage devices. With this diverse portfolio TDK covers an especially broad range of capacitances and voltages for practically every conceivable capacitor application.
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