TDK Corporation has launched the ACT1210G-800-2P, a new type of common-mode choke that conforms to the standards of the OPEN Alliance (One-Pair Ether-Net) for 1000BASE-T1.
As a result of the high values of the S-parameters, a high-amplitude ratio is created between differential and common-mode levels – a decisive factor for signal integrity in the automotive Ethernet. The common mode inductance at 100 kHz is 80 µH, and the maximum permissible current is 70 mA. .
The choke offers excellent thermal behavior, enabling it to be used within a wide temperature range from -40° to +125° C, thanks to a metal frame for the connecting electrodes. The new component is manufactured in a highly automated and precise winding process that achieves high reliability and minimal scatter of the electrical parameters.
One particular feature is the compact size, with measurements of just 3.2 x 2.5 x 2.4 mm, significantly less than those of CAN-Bus or FlexRay chokes. This means that the new choke can be used, for example, in automotive camera systems featuring an ever-increasing packing density of components.
TDK will extend the permissible temperature range of its common-mode chokes and expand the product portfolio, including the products for high-speed communication so that it can serve even more automotive applications.
Here’s a summary of the features:
- Compliant with standards of the OPEN Alliance for automotive Ethernet 1000BASE-T1
- Dimensions of only 3.2 x 2.5 x 2.4 mm
- Wide temperature range from -40 °C to +125 °C
- Qualified in accordance with AEC-Q200