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Use this drop-down menu to jump to all the product news stories from the Autumn 2008 issue of Murata Mail. CoilsCompact power inductor
High inductance, low DC resistance? Check out Murata's new release: the LQH55P Series. Murata has developed a new series of compact power inductors that offers wide inductance and low DC resistance. This product utilizes wire- wound technology and advanced ferrite materials to provide exceptional electrical characteristics. The LQH55P series comes in a 5.8mm x 5.2mm package and produces inductances from 1.2µH up to 22µH with rated currents as high as 2.9A.Further, the DC resistance is lowest in class when compared to competing products. As one of the most critical requirements in DC/DC converter applications is minimal loss in order to achieve a higher level of efficiency, the low DC resistance and low power loss of the LQH55P series makes it ideally suited to this application. The LQH55P will therefore be used in DC/DC converter power line filtering in portable equipment such as digital cameras, hard disk drives (HDD) for laptops, and other consumer electronics products where efficiency of the DC/DC converter has a direct effect on the battery life of the product.
CapacitorsCapacitor array GNM series
Murata has introduced the world's first 0.9 x 0.6 mm (EIA size 0302) 1.0µF 2-element capacitor array, and the part number is GNM0M2R60E105M. Our new 0302-size 2-element capacitor array has achieved 1.0µF static capacitance, which is unprecedented even for a single 0.6 x 0.3 mm (0201 EIA size) monolithic ceramic capacitor. The trend for miniaturization and high performance features in equipment continues to grow, resulting in a fierce race to develop smaller and higher capacitance monolithic ceramic capacitors. Due to its structure, a capacitor array can achieve static capacitance more readily than single monolithic capacitors. By applying Murata's cutting-edge dielectric material technology, each element of the 0302 capacitor array is able to achieve 1µF with higher capacitance than current technology allows for a single 0201 ceramic capacitor.
AntennaHigh performance, low cost antennas for GPS, Bluetooth® and WLAN
Murata has developed a series of platform antennas for GPS, Bluetooth and WLAN 2.4GHz aplications. Both On-GND and GND- clearance types are available. These standardised parts require little design resource compared to creating a customised design, and eliminate associated tooling costs. The series achieves excellent performance in a tiny package size by using Murata's high-Q dielectric ceramics. Murata's unique feeding structure makes these antennas much more stable and immune to changes in the environment, for example when the device is held in one's hand. Murata has also developed a technology for tuning the antennas using PCB patterns and external circuits. Designed to save space in consumer electronics applications, dimensions of each type of antenna are down to: 3.0 by 9.8 by 4.0mm (GPS On-GND type); 1.5 by 9.0 by 1.85mm (GPS GND-clearance type, exclusive of stripline circuit); 2.0 by 9.8 by 3.8mm (Bluetooth® /WLAN On-GND type); or 1.6 by 3.2 by 1.2mm (Bluetooth® / WLAN GND - clearance type, exclusive of stripline circuit).
CapacitorsMLCCs specially developed to reduce acoustic noise
Acoustic noise caused by capacitors be a real problem in certain applications. For example, sound may be generated by the MLCCs at the input to the DC-DC converter in a notebook PC, or by capacitors in the control circuit of the LCD module in a mobile phone. This problem is caused by the expansion and contraction of the dielectric element in some MLCCs which causes the substrate to vibrate at the amplitude of the voltage applied. When the frequency of the voltage applied approaches audio frequencies, a noise can be heard. Murata's GJ8 series has been specially designed to reduce this problem. The acoustic noise generated by the GJ8 series is around half of the noise generated by standard MLCCs. The GJ8 series is available in low-profile models with thicknesses of just 1.25, 1.60 or 2.50mm depending on capacitance. Rated voltage is up to 50V.
CapacitorsExtensive range of high-voltage rated capacitors for specific applications
Murata offers an extensive range of small form factor chip monolithic ceramic capacitors for high voltage applications. Parts are available with rated voltage from 250 to 3150V DC and safety recognized 250VAC. There are specific versions of these products available for many different applications. For example, the GR4_3D series is for reducing noise in LAN and Ethernet equipment such as modems, routers and IP phones; it features a rated voltage of 2kV and meets IEE802.3 requirements. Our GCM and GCJ series for automotive application offer rated voltages of 250V in 0805 to 2220 size packages, and 630V for 1206 to 2220 sizes, depending on the required capacitance. These series can be used in powertrain and ECU applications as well as in safety devices such as ABS, EPS and airbags. They also come in low dissipation types. For primary/secondary coupling applications in DC/DC converters, Murata offers the GRM31_R73A series, in 1206 size packaging. These have a rated voltage of 1kV but can withstand 1.5kV for 60 seconds. Murata also offers capacitors for inverters in CCFL applications whose rated voltage is 3.15kV. The GR7_BB family, rated voltage 350V, is specifically designed for digital camera flash/strobe applications. Its small and thin form factor plus good performance in DC- bias conditions make it perfect for saving space in digital still cameras. It is available in 10 to 47µF values. The resin coating with external electrodes present on all series contributes to high mounting reliability, and all are RoHS compliant.
Murata Boy"Magic Stick" remote control responds to human movement to control Murata Boy
Murata's cycling robot Murata Boy can now be controlled with a specially designed motion sensitive remote control called Magic Stick. Magic Stick's built-in sensors enable detection of six different types of motion (rotational motion in the forward, backward, left, right, up and down directions). Wireless operation of machines simulating smooth human motions will soon become a part of our lives. High performance sensors and reliable wireless technology are essential in turning this vision into reality. Murata developed the Magic Stick to demonstrate possible solutions based on Murata's sensor technology. Magic Stick is equipped with gyro sensors and a 3-axis acceleration sensor. Gyro sensors sense angular velocity while a 3-axis acceleration sensor senses the direction of slant, velocity and acceleration. Combining those features, we can sense complex human motions exactly. Magic Stick also contains a shock sensor and a piezoelectric buzzer for feedback. The 3-axis acceleration sensor was developed by our business partner, VTI Technologies. Analogue signals from the simple motions of Magic Stick are communicated to Murata Boy directly using a built-in Bluetooth® module, allowing Murata Boy to move around more smoothly than if the data was transmitted via a PC. Further, the use of Bluetooth makes it possible to control many different kinds of machines using Magic Stick technology. 
CatalogueCatalogue corner
Murata, the Technology House, is the global leader in the design, manufacture and sale of ceramic based passive electronic components and power supply modules. Check our full product line up in our Product Line Card 2009. Ask for your copy at info@murata-europe. com For a complete overview of our catalogues please check: |
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