TDK claims to have created the smallest common-mode choke for automotive Ethernet applications.
Its dimensions are 3.2 mm x 2.5 mm x 2.5 mm.
The ACT1210L choke, which is qualified to AEC-Q200, retains the Scd21 mode conversion characteristic of the previous generation product, the ACT45L.
According to the supplier, this key parameter expresses the amplitude relationship between differential and common-mode signal and should be as large as possible.
Due to the special connection technology of the windings, the common-mode chokes are suitable for a wide temperature range from -40 °C to +125 °C.
Typical applications for these Ethernet common-mode chokes are onboard cameras that can be designed for even higher operating temperatures.