TDK Corporation presents a new choke for automotive power over coax (PoC) applications. The new type offers good DC superimposition characteristics, thus separating the power from the signal path, for example, for the signals of sensors and cameras that are connected via automotive Ethernet.
The wire wound inductor, which has a DC resistance of 0.9 Ω, features high impedance over a broad frequency spectrum of 1 MHz up to 1 GHz.
The rated inductance of the choke is 47 µH and their rated current (Isat) is 300 mA.
Data and power signals are separated with high impedance over a broad frequency spectrum of up to 1 GHz. This is important for PoC applications requiring high impedance at the branch of the power line and the signal line in order to prevent the high-frequency signal from causing interference on the power line with its low load impedance.
The new choke, which is qualified to AEC-Q200, is available with compact dimensions of 3.2 mm x 2.5 mm x 2.4 mm. Mass production of the ADL3225V is scheduled to begin in April 2017.
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