Multilayer Chip Inductors Reduce EMI In High-Frequency Circuits

The new HK Series of high Q-value multilayer chip inductors are said to reduce EMI, increase battery life, and improve overall efficiency in cell phones, pagers, notebook PCs, and other products employing high-frequency circuits. Design benefits are said to include low price, surface mountability, small form factor, and high Q-value.
Other features cited for the HK Series include 100% silver (Ag) internal conductors, advanced dielectric ceramics, unique fabrication techniques, and small case sizes. Available in current ratings up to 300 mA, the HK Series inductors range from 1.0 to 120 nH (0402 case size), 1.0 to 220 nH (0603) and 1.5 to 470 nH (0805). Typical Q ratings range from 25 at 100 MHz to 90 at 1 GHz. Pricing ranges from $0.03 to $0.08 each in OEM quantities.