Industrial Single Pair Ethernet (SPE) Inductors

TDK’s industrial SPE inductors are based on the IEEE 802.3cg standard for 10BASE-T1L. The suppression of asymmetrical interference is critical to achieving interference-free data traffic. The RCM70CGI-471 common-mode choke has an inductance value of 470 µH and is designed for a maximum current of 700 mA at 80 V.

In certain applications, galvanic isolation between PHY and connector is required. This task is solved by ICI70CGI series isolation inductors 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 2250 V_DC.

With a 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 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. The type PIS150H-471M is designed as a single choke for noise suppression and smoothing of currents. Its maximum saturation current is 2300 mA.

TDK is an 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.