TDK Corporation has developed a series of inductors for Industrial Single Pair Ethernet (SPE) based on the IEEE 802.3cg standard for 10BASE-T1L. The suppression of asymmetrical interference is particularly important to achieve interference-free data traffic. The new RCM70CGI-471 common-mode choke, which has an inductance value of 470 µH and is designed for a maximum current of 700 mA at a voltage of 80 V, is suitable for this purpose.
In certain applications, galvanic isolation between PHY and connector is required. This task is solved by isolation inductors of the ICI70CGI series with a transformation ratio of 1:1. They are available in versions with inductance values of 1.0 mH and 2.2 mH. The isolation voltage is 2250V DC.
With Power over Data Line (PoDL) it is possible to connect actuators and sensors with just one pair of wires and realize both data and power transmission via this line. Special differential-mode chokes are required to suppress interference in these systems. The new PID* series are available in different versions and cover all six power classes (10 to 15) according to IEEE 802.3cg. The spectrum of saturation currents ranges from 360 mA to 2100 mA. Also new is the type PIS150H-471M, which is designed as a single choke for noise suppression and smoothing of currents. Its maximum saturation current is 2300 mA.
TDK is a SPE Industrial Partner Network member and the first supplier to offer all the inductors needed to implement Industrial SPE with and without power transmission using PoDL. All listed types are RoHS compliant and designed for a temperature range from -40 °C to +125 °C.
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