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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. Chip ferrite beadsMurata Introduces the BLM15AX_SN Series
Murata develops high performance EMIFIL chip ferrite beads to help designers save power and space in portable equipment designs. New ceramic materials and process technologies have allowed Murata to lower the DC resistance of its chip ferrite beads by up to 60%, increasing rated current to create the BLM15AX_SN series. Compared to their BLM15AG_ SN predecessors, the new BLM15AX_ SN series has DC resistance as low as 0.02Ω. Corresponding maximum rated current has increased from 1000 to 1740mA. The series comes in 0402-size packaging (1.0 x 0.5 x 0.5 mm), perfect for designers seeking to reduce board space without performance degradation in portable equipment designs. The series' low DC resistance also helps reduce power consumption for battery powered applications. The series' wide impedance line-up ranges from 10 to 1000Ω. Operating temperature range is -55 to +125°C.
CoilsCompact Coils
Murata's LQH44P series of 1515size wire-wound chip inductors increase efficiency in DC-DC converters. On offer now: Murata's low DC resistance, high rated current wirewound chip inductors in low profile 1515-size packaging (4.0 x 4.0 x 1.65mm), designed to save space and increase efficiency in DC-DC converter designs. The new series of wire-wound chip inductors, part number LQH44P, is suitable for DC-DC converter circuits in electrical appliances such as TVs, digital cameras, laptop computers and portable electronic equipment. Miniaturisation of such electronic equipment is driving Murata's development of smaller components which maintain their outstanding electrical performance to contribute to the efficiency of power supplies. The LQH44P series features seven parts with inductance between 1 and 22µH, with low DC resistance between 0.03 and 0.37Ω. Rated current is up to 2.95A. The parts are magnetically shielded to prevent interference and operate in the temperature range -40 to +85°C.
ThermistorsMurata Introduces the Thermo-String Temperature Sensor, the NXF Series
The thermistor comes with long wire leads (up to 150mm) so it can be placed close to hot spot areas that may not be on the printed circuit board or reachable by surface mount negative temperature coefficient thermistors on the motherboard. Utilizing Murata's current NCP series surface mount NTC thermistor line to provide accurate temperature measurement over wide temperature ranges, the Thermo-String NXF series offers a convenient leaded package to reduce costs since there is no need to design a new thermistor from scratch. With a maximum head size of only 2mm, the sensor provides operating temperatures in the range of -40 to +150°C (NXFS series) and are RoHS, ELV and AEC-Q200 compliant and halogen free. These certifications are required for Thermostring's use in the automotive industry. Suitable for lead free soldering, the sturdy thermistor is also resistant to mechanical vibrations and shocks.
Magnetic SwitchesMagnetic Switch AMR Sensor
Commercializing the Ultra-Small AS Series. Murata has reduced the size of its AMR magnetic switches, saving space and cost in consumer electronics applications. AMR (Anisotropic Magneto Resistance) magnetic switches are primarily used for open/close detection in home appliances such as white goods and security equipment as well as other consumer electronics devices like mobile phones, laptop PCs, digital cameras etc. Murata's range of AMR switches is now available in an ultra small package measuring 1.0x0.9x0.5mm, in addition to industrial standard package sizes such as SOT23 and SON4. Until recently, mechanical switches were used for open/close detection in mobile phones and laptop PCs; however magnetic switches and magnetic field sensors are now gaining popularity. Unlike their mechanical counterparts, magnetic switches eliminate wear caused by contact between the sensor and the magnet, increasing reliability. Additionally, magnetic switches make it possible to design water-tight products with the switches being protected from the outside elements. Demand for magnetic switches is expected to accelerate as equipment manufacturers adopt magnetic switches in place of mechanical switches in certain applications. Murata's comprehensive lineup of AMR switches has high (1.5mT) and low (3.0mT) sensitivity models, and is therefore suitable for a wide variety of applications. The switches also feature low power consumption as they require only 1.6µA/1.8V or 4.7µA/5V.
RF ConnectorsRF Switch Connector
Enhanced operating frequency range and reduced footprint? Meet Murata's tiny RF switch connectors, the new SWG series. Suitable for UWB (ultra wide band) applications, the SWG series of connectors, the world's smallest RF switch connectors at just 2.0 x 2.0 x 0.9mm, are designed to enable reliable testing of RF circuits throughout a product's development stage up to final production and save PCB space in portable/handheld consumer electronics applications. The series' small footprint makes it ideal for mobile phones, PDAs, GPS systems and measurement equipment and is compatible with WiFi, WiMAX, 4G, Bluetooth, ZigBee and UWB wireless standards. The connectors are now suitable for inspection of RF signals up to 11GHz, enabling designers to use wider frequency bands including UWB. This series features excellent high frequency characteristics with low insertion loss (01.dB max between DC and 3GHz, 0.2dB max between 3 and 6GHz, 0.5dB max between 6 and 11GHz). VSWR (voltage standing wave ratio) is 1.5 maximum. Murata's proprietary beam spring and double contact mechanism inside the connector ensure a reliable contact and the connectors are designed to reduce flux penetration. The SWG series is high durability, with a lifetime of more than 100 mating cycles. Murata also offers test probes, manual probes for test and evaluation and production probes for use in automated production lines. |
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