Ceramic Capacitors feature low-loss base metal electrodes.May 18, 2010 -
Low-loss monolithic ceramic capacitors in GQM22 series are rated 500 V and feature high Q-factor and tight capacitance tolerance. They have DC withstand voltage of 1,250 V and capacitance range from 0.5-100 pF. Operating temperature range is -55 to +125°C. Measuring 2.8 x 2.8 x 1.15 mm, units are suited for matching or coupling circuits used in applications such as power amplifiers for mobile communication, WiMAX, and LTE base stations.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Murata Power Solutions, Inc.
11 Cabot Blvd.
Mansfield, MA, 02048
USA
Murata Develops World's First 500 V-Rated MLCCs with Low-Loss Base Metal Electrodes to Improve Q-Factor of High-Frequency Circuits
Hoofddorp, Netherlands: Murata has added a series of 500V-rated low loss monolithic ceramic capacitors for high frequency applications to the lineup of its popular GQM series, by integrating its low loss materials technology and its base metal electrode technology. The GQM22 series is the world's first 500V-rated MLCC with base metal electrodes, featuring high Q-factor, tight capacitance tolerance and excellent high frequency characteristics.
Although the use of base metal electrodes has been known to be effective in reducing loss and improving Q-factor, their use had until now been accompanied by problems involving characteristic adjustments and firing conditions, among other issues. With the addition of the GQM22 series, Murata has used its materials technology and co-fired ceramic technology to make the use of base metal electrodes possible.
The GQM22 series is ideal for matching or coupling circuits used in applications such as power amplifiers for mobile communication, WiMAX and LTE base stations, as well as other related high frequency RF modules. Together with Murata's existing 100V and 250V-rated products, the introduction of the GQM22 series makes high Q and low ESR possible at VHF, UHF and GHz frequencies. The new devices feature a 40% improvement in Q at 1MHz over Murata's general-purpose medium and high voltage capacitors.
With dimensions of 2.8 x 2.8 x 1.15mm and capacitance ranging from 0.5pF to 100pF, the GQM series may be used for tight tolerance products (around capacitance tolerance±0.1pF). DC withstand voltage is 1250V. Q-factor may be calculated as follows: Q>800+20C where C is the nominal capacitance of the product in pF and is between 1 and 30pF. Above 30pF, Q>1400, measured at 1MHz. Operating temperature range of the GQM22 series is -55 to +125degC.
About Murata
Murata is a leading manufacturer of electronics components, modules, and devices. The complete range of this Ceramics Technology house includes ceramic capacitors, resistors/thermistors, inductors/chokes, ceramic resonators, buzzers, sensors and EMI suppression filters. Whilst the company gets 40% of its revenue from its ceramic capacitor products, it is also the world leader in Bluetooth & WiFi Modules, and a key manufacturer of power supplies. Murata also designs and manufactures mobile handset antenna families, piezoelectric actuators for fuel injection systems, short focal length ceramic lenses and speaker products.
Established in 1944, Murata is headquartered in Japan and has European offices in Germany, the Netherlands, the UK, Switzerland, Italy, France, Spain, Denmark, Sweden, Finland and Hungary.
For more information on Murata, please visit: www.murata.eu
|
|
|
|
|
|
|
| 
