Product category:
Capacitors
News Release from: Murata Electronics (UK) | Subject: GQM series
Edited by the Electronicstalk Editorial
Team on 18 February 2008
Multilayer ceramic chips run to
microwave
Low ESR helps reduce power consumption in mobile phones, basestations and telecommunications equipment, particularly RF power amplifiers.
Murata's GQM series of high-Q multilayer ceramic chip (MLCC) capacitors features low ESR and high Q at VHF, UHF and microwave frequencies The low ESR, typically 100mohm at 1GHz for a 10pF capacitor, helps reduce power consumption in mobile phones, basestations and telecommunications equipment, particularly RF power amplifiers
This article was originally published on Electronicstalk on 21 Feb 2005 at 8.00am (UK)
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The series comes with high voltage ratings up to 250V in 0603 packaging, and up to 100V in 0805 packaging.
0805 versions rated at 250V are under development.
This series is available with tight tolerances, meaning designers can improve matching circuits and reduce reflection loss.
Capacitors under 5pF are available with tolerances as tight as +/-0.05pF; 5-9pF parts have tolerances down to +/-0.25pF, and tolerance is as low as +/-1% for 10-20pF parts.
The GQM series' inner electrode is made of copper, which is both economical and effective when compared with palladium.
The structure of the copper electrode is optimised to suppress parasitic parallel resonance, which is a key factor in realising one of the industry's lowest ESR figures.
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