ACT1210E Common Mode Filters

TDK’s ACT1210E series (3.2 mm x 2.5 mm x 2.5 mm) includes the industry's first common mode filters designed for automotive Ethernet 10BASE-T1S. Adopting TDK's proprietary wire winding structure and optimal materials, this product achieves excellent high scattering parameters (S-parameters) and lowers the line-to-line capacitance by up to approximately 30% compared to conventional products. The lineup has recently been expanded to include ACT1210E-341-2P-TL00, which achieves Class IV parasitic capacitance in the OPEN Alliance EMC test specification for common mode chokes, another industry first. The operating temperature range is from -40°C to +125°C. Laser welding winding wires to the metalizing terminals provides high thermal shock resistance and outstanding reliability.

Amid the recent increase in the attention being paid to the autonomous driving of automobiles, the installation of electronic control units (ECUs) relating to safety functions, including those for advanced driver-assistance systems (ADAS), is increasing. Among the Ethernet telecommunication standards, 10BASE-T1S is unique in its support of multidrop topologies, which enables multiple ECUs to be connected. In this respect, it differs from 100BASE-T1 and 1000BASE-T1, which support peer-to-peer telecommunication only. More and more customers are now considering shifting from the CAN, CAN FD, and Flex-Ray standards, which are currently commonly used because they support multidrop connections, to Ethernet systems to achieve a uniformity of standards. ACT1210E products demonstrate characteristic well suited to these needs and contribute to improving the quality of telecommunication and suppressing noise.

Applications

• Automotive Ethernet 10BASE-T1S