TDK’s latest high-impedance multilayer common mode filters mitigate noise issues in ultra-high speed automotive interfaces

• Major improvements in noise control capabilities compared to conventional products
• Support for high-speed differential transmissions of over 10 Gbps
• Wide operating temperature range of -55 to +125 ℃
• Impedance of 1000 Ω at 1 GHz

TDK Corporation (TSE: 6762) has announced the introduction of its new KCZ1210DH800HRTD25 common mode filter for deployment in ultra-high-speed automotive interfaces (1.25 x 1.0 x 0.5 mm - L x W x H). Mass production of the product began this month, March 2023.

This product is an addition to the KCZ1210DH Series that was released in February 2022. It enables substantial enhancements in noise control functions compared to conventional filters, with an impedance of 1000 Ω at 1 GHz and insertion loss of more than 25 dB. Due to the recent spread of advanced driver-assistance system (ADAS) implementation, the speed of signal processing has ramped up significantly. Through this, the move to safer and more secure autonomous driving will be achieved. The new TDK filter contributes to preventing errors in high-speed signal processing in relation to front sensing cameras, mmWave radar, LiDAR, etc. 

Through TDK's proprietary internal electrode pattern arrangement plus the integrated and sintered configuration of optimal low dielectric materials, this product achieves superior properties, alongside long-term reliability. Furthermore, by adding a conductive resin-based layer to the terminal electrodes, the risk of cracks appearing (due to thermal shocks) is reduced. It also heightens durability to mechanical stresses, such as substrate strains. 

The automotive-grade KCZ1210DH800HRTD25 common mode filter is extremely compact. It has 1.25 mm x 1.0 mm x 0.5 mm dimensions. An operating temperature range of -55 to +125 ℃ is supported. 

TDK offers a diverse portfolio of multilayer automotive products, including chip beads that can be used at up to 150 °C and common-mode filters to address radiant noise reduction in high-speed differential transmissions. The company will continue to develop and service noise control products to contribute to communication quality in increasingly faster autonomous driving systems.