High-Impedance Chip Beads with Lowest DC Resistance

Photo Source: TDK Corporation

Photo Source: TDK Corporation

TDK Corporation has announced the development of the MMZ0402EUC series of chip beads, with the lowest DC resistance for a chip bead its size. The two new types with their respective impedance values of 150 Ω and 180 Ω at 100 MHz, feature DC resistance values of only 0.62 Ω and 0.69 Ω. This results in a significant reduction in power losses, while at the same time providing excellent noise suppression. In fact, the compact IEC 0402 components with dimensions of 0.4 mm x 0.2 mm x 0.2 mm feature an impedance that is up to 20 percent higher than their existing MMZ chip beads with the same DC resistance rating. Combined with their higher rated currents of 350 mA and 300 mA compared to existing types, the new MMZ0402EUC chip beads are ideally suited for noise suppression in the power and signal circuits of smartphones, tablets and other mobile devices.

The improved ratio of impedance to DC resistance of the new series was achieved thanks to their advanced materials. The components can be used in a wide range of temperatures from -55 °C to +125 °C. They will continue to expand the available range of impedance values in the compact lineup to meet the requirements for a broad range of mobile device designs.

Source: TDK Corporation

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