Passive Components


Multilayer ceramic inductors

16 May 2012 Passive Components

TDK has introduced the new MHQ1005P series of multilayer ceramic inductors with a Q factor that, depending on the type, is as good as or better than comparable, but more expensive, wirewound inductors. For example, the MHQ1005P2N7 type with an inductance of 2,7 nH offers a Q factor of 108 at 2,4 GHz. The new multilayer ceramic components are thus suitable for use in low-loss RF matching circuits in mobile devices.

The high Q factor achieved by the MHQ1005P series is due to TDK’s advanced materials technology and innovations in the internal structure of the inductor. The use of new materials has produced an electrode with a smoother surface, which raises the device’s Q factor and lowers the dielectric constant, thus delivering a better self-resonant frequency.

Enhancements to the internal structure of the inductor – including thicker inner electrodes and new L-shape terminals to improve magnetic flux – also help to raise the Q factor of the new parts. Inductors of the MHQ1005P series are available in 27 inductance values from 1 to 15 nH and in three tolerance levels. They are offered in the 1005 case size with a footprint identical to that of 1005 wirewound inductors.



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