TDK introduces the industry's first common-mode filter for automotive Ethernet 10BASE-T1S

TDK introduces the new ACT1210E series (3.2 x 2.5 x 2.5 mm (L x W x H)) common mode filter for Automotive Ethernet 10BASE-T1S. Mass production of the new common-mode filter will begin in February 2023

● The industry's first  for automotive Ethernet 10BASE-T1S common mode filter

● Construction to reduce interline capacitance

● High reliability is achieved by laser welding the winding wire to the metallized terminal

The product is the industry's first common-mode filter for automotive Ethernet 10BASE-T1S, using TDK's proprietary winding structure and optimal materials to achieve the industry's highest S-parameter (scattering parameter), maximum interline capacitance of 10 pF, and operating temperature range of -40 to +125℃. By laser welding the winding wire to the metallized terminal, high shock resistance and high reliability are achieved.

As more attention is paid to autonomous driving in cars, the installation of electronic control units (ECUs) related to safety functions, such as Advanced Driver assistance systems (ADAS), is also increasing. In the Ethernet communication standard, only 10BASE-T1S supports a multipoint topology, allowing multiple ECUs to be connected. In this respect, 10BASE-T1S differs from 100BASE-T1 and 1000BASE-T1, which only support P2P communication. An increasing number of customers are now considering switching the common CAN, CAN FD, and Flex-Ray standards that support multipoint connectivity to Ethernet systems to achieve consistency. The new product will prove to have features that meet these needs, improve communication quality and suppress noise.

TDK offers a wide range of common-mode filters for automotive applications, including not only those that meet the requirements of the current mainstream CAN, CAN FD and Flex-Ray protocols, but also those that meet the requirements of the Ethernet protocol. For example, the communication rates of 100BASE-T1 and 1000BASE-T1 are 100 Mbit/s and 1000 Mbit/s respectively. TDK will continue to provide a full range of product services for common-mode filters for automotive communications to meet customer needs.