News Center | Press Releases

EMC components: Compact automotive feedthrough filter with highest capacitance

  • Industry’s highest capacitance (1 µF) for a feedthrough filter of its size
  • Qualified according to AEC-Q200
Transformers:SMD pulse transformers for Gigabit Ethernet and PoE

Feb 13, 2018

TDK Corporation has extended its lineup of 3-terminal feedthrough filters for automotive applications. The new YFF18AC0J105M type is available in an IEC 1608 package (EIA 0603) with compact dimensions of just 1.6 mm x 0.8 mm x 0.6 mm and features *the industry’s highest capacitance of 1 µF for a feedthrough filter of its size. The component offers a rated current of 2 A and a rated voltage of 6.3 V. The new filter is qualified according to AEC-Q200 and is suitable for a wide range of decoupling applications to protect automotive ECUs from EMI. Mass production of the components began in January 2018.

TDK's feedthrough filters represent an effective and space-saving decoupling and noise suppression solution for sophisticated automotive applications such as advanced driver assistance systems (ADAS) with their increasingly demanding requirements. In particular, as the functionality of on-board ICs becomes more advanced, conventional decoupling designs require increasing numbers of MLCCs to protect the ECUs from EMI. Thanks to its high capacitance and low ESL, the new feedthrough filter from the YFF18AC series can achieve a lower impedance at a frequency of several ten MHz, for example, than five 0.22-µF IEC 1005 MLCCs connected in parallel. The result is a smaller number of components needed and significant space savings.

In the future, the capacitance range of the automotive-grade feedthrough filters will be further expanded in order to support an even wider spectrum of automotive applications.

* As of February 2018, according to TDK research


  • Decoupling: Insertion of a capacitor between the IC power line and the ground in order to suppress EMI.

Main applications

  • Wide range of decoupling applications to protect automotive ECUs from EMI

Main features and benefits

  • Highest capacitance in a compact package
  • High reliability
  • Qualified to AEC-Q200
  • Reduces the number of components needed for decoupling

Key data

Type Package size Dimensions
Rated voltage
Rated current
Rated capacitance
Impedance @ 50 MHz
YFF18AC0J105M IEC 1608 (EIA 0603) 1.6 x 0.8 x 0.6 6.3 2 1 0.014

About TDK Corporation

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.


Contacts for regional media

Region Contact Phone Mail
Japan Mr. Yoichi OSUGA TDK Corporation
Tokyo, Japan
+813 6778-1055
Ms. Pei Lu LEE
TDK Singapore (Pte) Ltd.
+65 6273 5022
Greater China Ms. Clover XU TDK China Co., Ltd.
Shanghai, China
+86 21 61962319
Europe Mr. Frank TRAMPNAU TDK Europe GmbH
Duesseldorf, Germany
+49 211 9077 127
America Ms. Sara M. LAMBETH TDK Corporation of America
Irving, TX, USA
+1 972-409-4519