New common-mode choke is ideal for demanding automotive applications

Murata has announced the sampling of what is claimed to be the world’s first common mode choke coil created to be completely compatible with the automotive high-speed (1Gbps) LAN standard, 1000BASE-T1. The new DLW32MH101XT2 is said to be the industry’s smallest common mode choke coil for 1000BASE-T1 applications. Vehicle technology has rapidly developed in recent years to include ADAS and sophisticated IVI while moving ever closer to wholly autonomous operation. As a result, vehicle communication busses transport increased-bandwidth data from higher resolution image sensors and more complex ECUs. To sustain this traffic, the 1000BASE-T1 standard is anticipated to become widespread in the future. The device supports the S-Parameter characteristics specified by the OPEN alliance automotive network standard organization and satisfies the characteristics for noise filters in 1000BASE-T1 communications. Through the application of the company's winding technology and using a unique winding structure, the device is the smallest currently available, measuring just 3.2mm x 2.5mm x 2.5mm and weighing just 0.064g. It provides an inductance value of 100uH and a typical DC resistance of 2.6Ohm and is rated for currents up to 100mA. Compliant with the AEC-Q200 automotive standard, the common mode choke coil provides an extended temperature range of -40C to +125C, making it ideal for demanding automotive applications.