EMC countermeasure components: high-impedance patch beads with the lowest DC resistance

BLM18PG121SN1D MURATA Murata magnetic beads original spot

TDK Co., Ltd. developed the MMZ0402EUC series of patch magnetic beads . The product has the lowest DC resistance* in the same size of the chip . At 100MHz, the two new patch beads each have impedance values ​​of 150? and 180?, and DC resistance values ​​are only 0.62? and 0.69?. This effectively reduces the power loss and also provides good noise suppression. In fact, the compact IEC0402 component measures only 0.4mmx0.2mmx0.2mm, but its impedance is 20% higher than TDK's existing MMZ chip beads with the same DC resistance rating. Moreover, compared with the existing types, the rated current is higher, 350mA and 300mA respectively. Therefore, the new MMZ0402EUC chip beads are ideally suited for power circuits and signal circuits of smartphones, tablets and other mobile devices. Noise suppression inside. The product will begin mass production in August 2017.

Thanks to advanced TDK materials, this new product line improves the ratio of impedance to DC resistance. This product has a temperature range of -55°C to +125°C. TDK will continue to expand the range of impedance values ​​available in this small lineup to meet a wide range of mobile device design requirements.

main application

Smartphones, tablets and other mobile devices

Main features and advantages

In the same size of the patch, the DC resistance is the lowest, the resistance value is as low as 0.62?

At 100MHz, the impedance is 150? and 180?, which is 20% higher than the impedance of the chip with the same DC resistance.

Compact size, only 0.4mmx0.2mmx0.2mm

Operating temperature range from -55°C to +125°C

Main characteristics