TDK Introduces Small, High-Performance Thin-Film Common Mode Filters for Mobile Devices

     TDK Corporation has launched the TCM0403M series of compact thin-film common mode filters for mobile devices. The 0403 case size (0.45.0.3.0.23 mm) is 58% smaller and 56% lighter than the previous product. This product has the characteristics of high common mode attenuation, which reduces the interference noise and improves the sensitivity of wireless signal reception. The common mode attenuation at 2.4GHz is 21dB, the common mode attenuation at 5.0GHz is 28dB, and the maximum allowable current is 50mA.

     As wireless devices such as smartphones, wearables, and other mobile products become more multifunctional, the noise generated inside the devices causes the wireless signal to deteriorate. Therefore, it becomes important to prevent deterioration of signal reception sensitivity and to prevent external noise that may cause equipment failure. This series will address these common challenges.

     Since the footprint of this product is reduced by 58%, it can be installed in an ultra-small space, which is not possible with the existing TCM0605 series (case size: 0.650.5 mm). By improving TDK's proprietary fine pattern technology and optimizing the design, this product has the same common-mode attenuation characteristics as existing products and differential transmission characteristics that support high-speed signal transmission.