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Content tagged with Passive
posted in February 2007
Fundamentals of ISM-Band and short range device antennas, Part 3
Design How-To  
2/28/2007   Post a comment
Part 3 of this four part series on antenna fundamentals focuses on RF propagation for ISM-band and short-range antennas, specifically covering path loss and multipath propagation effects on the communication link.
Thin-film inductors save board space
Product News  
2/27/2007   Post a comment
Designed to fit space-constrained communications applications, BI Technologies Magnetic Components Division offers the BTC series of thin-film chip inductors in 0402 and 0603 package sizes.
Cube inductor operates up to 1 MHz
Product News  
2/27/2007   Post a comment
BI Technologies Magnetic Components Division has developed a high-current cube inductor that operates at frequencies up to 1 MHz.
Power inductors span wide range of sizes and inductance values
Product News  
2/27/2007   Post a comment
BI Technologies Magnetic Components Division offers the HM62 series of surface-mount power inductors in four low-profile packages for handheld electronic devices.
Power transformers target PoE applications
Product News  
2/27/2007   Post a comment
BI Technologies Magnetic Components Division has developed the HM110 series of DC/DC converter transformers specifically for Power-over-Ethernet (PoE) applications.
Ferrite materials span 10-kHz to 1-MHz frequency range
Product News  
2/26/2007   Post a comment
MMG's F58 and P11 high-stability manganese-zinc ferrite core materials span the 10-kHz to 1-MHz frequency range.
Optical isolators provide high voltage isolation
Product News  
2/26/2007   Post a comment
OPTEK Technology has developed a family of optical isolators aimed at dust-contaminated environments in industrial, medical and office equipment applications.
CJC module enhances temperature measurement
Product News  
2/26/2007   Post a comment
BI Technologies offers a CJC module that is designed to enhance the accuracy of thermocouple temperature measurement in power electronic applications.
AMS driver improves data transfer in analog sensors
Product News  
2/26/2007   Post a comment
The Sensors Division of MTS Systems has developed an Asset Management System (AMS) device driver for its model M-Series MR analog liquid-level sensor that allows easier access to internal data registers and controls all of the devices on the network using advanced automation software.
SAW duplexer integrates matching circuit
Product News  
2/23/2007   Post a comment
Kyocera has developed a small, lightweight SAW duplexer with a built-in matching circuit. The SD25 series duplexers also feature improved attenuation and isolation characteristics.
Quick-Net gives resistor network designers two-week turnaround
Product News  
2/22/2007   Post a comment
Vishay Intertechnology developed Quick-Net, a prototyping service for precision resistor networks to provide designers and manufacturers with a two-week turnaround without non-recurring engineering (NRE) charges.
Ferrite materials aimed at power applications
Product News  
2/22/2007   Post a comment
EPCOS has developed two ferrite materials with enhanced properties that make them suitable for the power-range typical of switch-mode power supplies and current meters.
High linearity mixer and gain blocks for CATV, WiMAX
Product News  
2/22/2007   Post a comment
Hittite Microwave Corporation developed the HMC615LP4(E); a high IP3 mixer with integrated LO amplifier which is rated for 2.3 to 4.0 GHz, and exhibits +35 dBm input IP3 with only +4 dBm LO drive. The passive mixer topology is works for both upconversion and downconversion applications, and supports IF bandwidths of up to 1 GHz.
100-MHz OCXO offers low noise
Product News  
2/22/2007   Post a comment
Bliley Technologies has introduced a low-noise, 100-MHz OCXO in a low-profile package for phase-locked microwave signal sources.
3-axis accelerometer miniaturizes motion sensing
Product News  
2/21/2007   Post a comment
Targeting customer demand for miniaturized motion sensing in portable electronic devices, STMicroelectronics has added a power- and cost-optimized 3-axis accelerometer to its family of ultra-compact low-g linear accelerometers.
Diode laser bars operate under extreme conditions
Product News  
2/21/2007   Post a comment
A series of conductively-cooled diode laser bars from Coherent, Inc. offers high power and extended lifetime even under adverse operating conditions such as elevated operating temperatures, frequent power cycling and extreme shock and vibration.
Epcos buys sensor specialist
News & Analysis  
2/21/2007   Post a comment
Passive component vendor Epcos AG has acquired Aktiv Sensor GmbH. The Stahnsdorf, Germany, based company specializes in design and production of piezoelectric pressure sensors.
Diversity antennas enable high data transmission in small package
Product News  
2/20/2007   Post a comment
Pulse has developed a line of high-performance ceramic diversity antennas that enable high-data-rate transmission, yet are small enough to fit in mobile terminals.
High-current inductors offer low DCR tolerance
Product News  
2/20/2007   Post a comment
Vishay claims to introduce the industry's first series of low-profile, high-current inductors with a 3% DCR tolerance for current sensing applications.
Kemet offers to buy European capacitor firm
News & Analysis  
2/20/2007   Post a comment
Kemet Corp., a manufacturer of tantalum and aluminum capacitors, said it has offered to buy Evox Rifa Group Oyj, a maker of film and electrolytic capacitors, reportedly for approximately $55 million in cash.
SoC integrates image sensor, digital auto-focus engine
Product News  
2/19/2007   Post a comment
MagnaChip Semiconductor is sampling an imaging SoC dubbed the MC531EA that incorporates image sensor and pixel technology, image processing and a digital auto-focus engine.
LED systems provide safety measures, increase efficiency
Product News  
2/19/2007   Post a comment
DDP has developed LED systems specifically designed for light-guided picking system applications that use LED indicator modules to help reduce the risk of errors and to improve throughput.
Passivated nichrome resistors expand resistance value range
Product News  
2/19/2007   Post a comment
Targeting higher resistances in applications that require operation in high moisture environments, Stackpole Electronics has expanded its RNCS series of passivated nichrome precision resistors with extended resistance values.
Ceramic capacitors prevent surface arc-over at high voltages
Product News  
2/16/2007   Post a comment
Vishay says it has introduced the industry's first surface-mount C0G MLCC designed to prevent surface arc-over at high voltages. These ceramic capacitors also offer twice the voltage breakdown of standard capacitors.
MLCCs offer extended capacitance values in 1812 case size
Product News  
2/15/2007   Post a comment
Kemet extends the capacitance/voltage values of its ceramic capacitors in an 1812 package with values of 4.7 uF/25 volts and 10 uF/50 volts. These devices suit automotive, power supply and other applications where higher operating temperatures are required.
Inductors combine low inductance with high frequency
Product News  
2/15/2007   Post a comment
Vishay has released four low-profile, high-current inductors that feature high maximum frequencies and low inductance values. The IHLP inductors also tout the lowest direct resistance current (DCR)/uH for their respective package sizes.
MLCC packs more capacitance in 1210 case size
Product News  
2/15/2007   Post a comment
Kemet has introduced a multilayer ceramic capacitor line in a 1210 case size with the same capacitance and voltage extensions as its newly expanded EIA 1812 package.
TriQuint extends RF SAW filter line
Product News  
2/15/2007   Post a comment
TriQuint Semiconductor has released a line of RF SAW filters for GSM/EDGE/WCDMA networks in a standard 3 x 3-mm footprint.
Tantalum capacitors fit small audio devices
Product News  
2/12/2007   Post a comment
AVX has extended its TLJ series of tantalum capacitors to include a miniature T case size for miniature devices such as mobile phones, MP3 players and PDAs.
Power resistors offer wide resistance value range
Product News  
2/12/2007   Post a comment
Vishay has released a family of 20-W thickfilm power resistors housed in an easy-to-mount TO-263 package (D2PAK).
Startup targets mobile phone health hazards
Product News  
2/12/2007   Post a comment
With the mobile communications industry’s biggest annual bash just opened in Barcelona, a year old company tried to dampen proceedings by warning of the health dangers of wireless communications and suggested it has the technology and product to protect people from the potentially harmful effects of radiation emitted from mobile devices.
High-voltage IC with PFC simplifies multi-lamp circuits
Product News  
2/9/2007   Post a comment
International Rectifier introduced the IRS2168D high-voltage integrated circuit (HVIC) for electronic linear fluorescent lamp ballasts which incorporate active power factor correction (PFC). The IC integrates PFC, ballast control and a 600V half-bridge driver in a compact 16-lead S/O package and features a wide range input voltage PFC.
Axial-leaded resistors are moisture-proof
Product News  
2/7/2007   Post a comment
Stackpole Electronics has developed a series of axial-leaded film resistors that are not susceptible to corrosion in high-moisture environments.
Coaxial resonator oscillator delivers ultra-low phase noise
Product News  
2/6/2007   Post a comment
Crystek develops an ultra-low phase noise coaxial resonator oscillator for digital radio equipment, fixed wireless access, satellite communications system, and base station applications.
Power inductors offer low DC resistance, tight tolerances
Product News  
2/6/2007   Post a comment
Stackpole Electronics introduces two series of through-hole ferrite bobbin inductors with a wide range of inductance values, tight tolerances and low DC resistance.
Gigabit isolation transformer modules are 50 percent smaller
Product News  
2/5/2007   Post a comment
Pulse claims to offer the industry's smallest gigabit quad- and dual-port discrete isolation transformer modules. These Quattro and Dos gigabit modules are said to be 50 percent smaller than currently available modules.
How to control input ripple and noise in buck converters
Design How-To  
2/4/2007   Post a comment
A number of relatively simple methods are available to reduce input noise and its impact on other devices. This article describes these sources of input noise and ripple and some basic methods to attenuate its occurrence.
Improve Hall sensor rotor-position measurements: Part 2
Design How-To  
2/2/2007   1 comment
This part gives a method that eliminates errors due to imprecise rotor angular position data from Hall sensors while improving control system performance in terms of reduction of torque ripple and total harmonic distortion of currents in the motor phases.
IMS releases series of aluminum-nitride resistors
Product News  
2/2/2007   Post a comment
International Manufacturing Services, Inc. (IMS), announced their release of the APX-CS series of aluminum nitride (AlN) resistors. These surface-mount devices feature a metal center stripe on the backplane to improve thermal conductivity to the customer's groundplane.
Inventory issues thwart Epcos sales
News & Analysis  
2/1/2007   Post a comment
Customer inventory reductions dragged down the sales of passive component manufacturer Epcos AG in its first quarter of FY 2007. In a year-over-year comparison, however, the company could significantly raise sales and profit.


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