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Home > Technology List > TDK NEW PRODUCT_Soft-termination MLCCs with low ESR and EPCOS PQvar?

TDK NEW PRODUCT_Soft-termination MLCCs with low ESR and EPCOS PQvar?

Update Time: 2019-12-20 10:38:57

TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's portfolio includes passive components, such as ceramic, aluminum electrolytic and film capacitors, ferrites and inductors, high-frequency products, and piezo and protection components, as well as sensors and sensor systems and power supplies. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK's further main product groups include magnetic application products, energy devices, and flash memory application devices. TDK focuses on demanding markets in the areas of information and communication technology and automotive, industrial and consumer electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2017, TDK posted total sales of USD 10.5 billion and employed about 100,000 people worldwide.

Before introducing this product I will show some electronic components from adi. You can find it on the jotrin official website.


Next we will introduce two new products from TDK about their features and related functions.

Multilayer ceramic chip capacitors: Soft-termination MLCCs with low ESR

TDK Corporation has developed the industry’s first soft-termination MLCCs with low ESR. The new CN series features terminal electrodes with a conductive resin layer that provides high mechanical robustness to protect against board flexure. At the same time, the new MLCCs offer a low ESR that is comparable to that of conventional MLCCs. The CN series offers capacitance values ranging from 2.2 µF to 22 µF and rated voltages from 16 V to 100 V. Based on X7R dielectric material commercial grade and automotive grade types of the new MLCCs are available. The latter are qualified to AEC-Q200. Mass production and sales of the first types was launched in April 2018.

Soft-termination MLCCs, which are able to withstand the stress from board flexure, are an effective way to prevent short circuits when used in battery lines. Conventional designs that coat the electrodes completely with resin, however, lead to higher ESR and losses. TDK has achieved the low terminal resistance values by applying the conductive resin layer only where the terminal electrode comes into contact with the PCB. Thanks to the low resistance of the terminal electrodes of the new CN series these MLCCs are suitable for battery lines in automotive and industrial robot applications, where they help to improve system reliability. The capacitors can also be used in automotive ECUs, advanced driver assistance systems (ADAS), and automated driving systems. TDK offers a broad portfolio of MLCCs for a wide range of applications. TDK will continue to place a special focus on the development of technologically superior automotive grade MLCCs.

Main applications about Soft-termination MLCCs with low ESR

Battery lines of automotive and industrial robot applications

Automotive ECUs

Advanced driver assistance systems (ADAS), automated driving systems
Main features and benefits
Low ESR comparable to that of conventional MLCCs
High mechanical robustness to protect against board flexure

Suitable for battery lines in automotive and industrial robot applications
Qualified to AEC-Q200

Soft-termination MLCCs with low ESR

Power factor correction: PQvar™ boosts energy efficiency and ensures load balancing

TDK Corporation presents EPCOS PQvar™, a modular static var generator for active stepless power factor correction and load balancing in industrial grids and large commercial buildings. With a fast response time of less than 15 ms and a dynamic reaction time of 50 µs, PQvar offers significantly faster compensation than conventional systems. The system is suitable for the active compensation of both inductive and capacitive loads and can achieve a power factor of 0.99. At the low-voltage level PQvar is designed for 400 V and 690 V supply systems. In these voltage classes individual modules with outputs of between 30 kvar and 200 kvar are available, as well as systems for up to 880 kvar per compensation cabinet.

Through the targeted use of power factor correction systems such as PQvar, energy efficiency can be significantly improved. On the one hand, the power losses in the electrical transmission and distribution network are significantly reduced and, the CO2 emissions for generating this wasted power are avoided. On the other hand, transformers and the power transmission and distribution networks can be used more efficiently.

Using Advanced Multi Controllers (AMC), the PQvar system can be combined with conventional passive low-voltage compensation stages. The medium-voltage level is covered by systems for 6 kV, 10 kV and 35 kV, the modules being designed for outputs of between 2000 kvar and 12,000 kvar. All modules are available for 3-phase grids with or without neutral conductors. Depending on the output and size, the modules are designed as slide-in units for control cabinets and systems for wall mounting (low-voltage) or as control cabinet systems (medium-voltage).

Main applications

Active stepless power factor correction and load balancing of industrial grids and commercial buildings

Main features and benefits

Short response time of <15 ms;
Dynamic response time of 50 µs
Available for the low-voltage and medium-voltage levels

Wide range of compensation outputs from 30 kvar to 12,000 kvar

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