Circuit Components I Product News
AVX develops high Q, low ESR, 500 and 250VDC multilayer organic RF capacitor
AVX Corporation, a manufacturer of advanced passive components and interconnect solutions, has developed a 500 and 250VDC, 0603 case size surface mount capacitor that is capable of supporting frequencies from 1MHz to well above 5GHz. Designated the MLO3 Series, the advanced organic RF capacitors maintain high Q and high self-resonance while providing low ESR values at high frequencies. The capacitors, based on the company’s patented multilayer low loss organic (MLOT) technology, are polymer-based organic capacitors that use high-conductivity copper interconnects in a multilayer fashion. The ability to fabricate these components on
large area substrates with sophisticated laser direct imaging allows for improved cost benefits and tolerance control. The end result is a low profile, low ESR and high-performance RF capacitor. In addition, the MLOT Capacitors are expansion matched to printed circuit boards for improved reliability. According to Larry Eisenberger, Product Manager at AVX, the company’s “new line of organic capacitors represents a revolutionary departure from traditional passive SMT components. The multilayer low loss organic RF capacitor's state-of-the-art design ultimately increases performance characteristics while decreasing costs."
The RoHS-compliant RF capacitors are 50VDC to 500VDC rated with capacitance values ranging from 0.1pF to 2.5pF with capacitance
Vishay releases new photovoltaic solar panel protection rectifier
Vishay Intertechnology has introduced a new photovoltaic solar panel protection rectifier with a high current rating of 10 A and high reverse voltage of 1000 V in the P600 axial package. Based on glass passivated chip technology, the GPP100MS offers a maximum operating junction temperature of 175 ºC. The device features low thermal resistance, low forward voltage drop of 0.80 V at 10 A and 125 ºC, and high forward surge capability of 440 A.
Suitable for polarity protection applications in solar panel blocking boxes, the P600 package features solder bath temperatures of 275 °C maximum, 10 s, per JESD 22-B106. The GPP100MS is compliant to RoHS Directive 2011/65/EU.
Vishay Intertechnology |
www.vishay.com
tolerance to +/- 0.02pF. Available in 0603 case size with a 100% tin finish, the MLO3 Series features stable NPO characteristics with an operating temperature range of -55°C to +125°C.
The MLO3 Series surface mount capacitors
are suitable to be used in RF power and low noise amplifiers, filter networks, and MRI systems.
AVX Corporation |
www.avx.com
Multianode tantalum capacitors from AVX deliver power to laser source on Mars
The ChemCam (chemistry and camera instrument) laser module on board the Mars rover 'Curiosity' - which successfully landed on Mars in August earlier this year - contains 630 tantalum multianode capacitors from AVX Corporation. The laser module is used to analyse chemical elements of rocks on Mars.
In August 'Curiosity' successfully fired its laser for the first time on Mars to interrogate a fist-
sized rock called 'Coronation'. The laser from the rover's ChemCam hit the rock with 30 pulses during a ten-second period. Each pulse delivered more than a million watts of power for about five one-billionths of a second.
The design of the laser power source for the ChemCam had to meet extreme requirements. A small size and very light-weight package delivering very high power performance using only well established, high reliability
components was required. In co- operation with IRAP (Institut de Recherche en Astronomie et Planétologie) and CNES(Centre National d'Études Spatiales) in Toulouse, France, part of ChemCam's US-French design team, AVX's Tantalum Division designed a large bank of 630
tantalum multianode capacitors (470µF 10V). Providing very low ESR, the devices are based on proven, high-quality technology. The capacitors were produced in the ESA (European Space Agency)-approved manufacturing facility from AVX in Lanskroun, Czech Republic and then re- tested to MIL standards by AVX in Biddeford, Maine, USA. ChemCam's laser, imager and telescope can be pointed at rock and soil targets in the vicinity of
the rover from its position on top of the mast, 2 meters (6.6 feet) above the ground. Laser pulses vaporize a pinhead-size target up to 7 meters (32 feet) away, producing a flash of light from the material ionized by the laser. The telescope observes that flash of light. An optical fibre from the mast unit delivers the telescope's observation to the body unit, which then analyses the light from the ionized target material to identify chemical elements in the target. The body unit is 20 centimetres (7.9 inches) long. ChemCam was conceived, designed and built by a US-French team led by Los Alamos National Laboratory in Los Alamos, New Hampshire; NASA's Jet Propulsion Laboratory in Pasadena, California; the CNES Centre National d'Études Spatiales (the French government space agency); and the IRAP (Institut de Recherche en Astronomie et Planétologie) based in Toulouse, France. Researchers will use the tools on the rover to study whether the landing region has had
environmental conditions favourable for supporting microbial life and favourable for preserving clues about whether life existed.
34 October 2012 Components in Electronics
Highly sensitive thermistor aimed at battery pack and power supply temperature detection
Murata has unveiled a highly accurate NXRT series of radial-leaded NTC thermistors. Utilising Murata's highly accurate NCP15 series chip thermistor within an epoxy resin, the NXRT series is available with the nominal resistance values of 2 k, 10 k, 33 k, 47 k or 100 k ohm at 25 degrees C. Nominal resistance accuracy is typically in the range of +/- 1 % to 5 %. Measurement sensitivity is believed to be the best available within the industry. At +50 degrees C the temperature detection sensitivity deviation is within +/- 0.6 degrees C, and is within +/- 1.4 degrees C at 100 degrees C. The low cost NXRT series is ideal for accurate temperature detection in a wide range of consumer electronics and domestic electrical appliances. The thermistor is particularly suited to measuring the temperature of a power supply circuit or battery.
The thermistor package measures 4.0 x 2.0 x 40 mm in total including the 0.4 mm diameter
radial leads. The NXRT series is suitable for use in most environments and has an operating temperature range from - 40 to + 125 degrees C.
Murata |
www.murata.co.uk
Fox’s XpressO TCXOs provide custom frequencies up to 250 MHz with quick delivery
Fox Electronics, a global supplier of frequency control solutions and an IDT company, has enhanced its innovative XpressO line of low jitter configurable oscillators with the XpressO-TC, a new TCXO version with custom frequencies up to 250 MHz.
Part of the FXTC-HE73 series, the new HCMOS XpressO-TC oscillators offer a tight frequency stability of ±2.5 ppm across an extended temperature range of -40°C to +85°C. With custom frequencies up to 250 MHz, the new TCXOs offer a significant advantage over traditional TCXOs with a typical maximum frequency of 50 to 60 MHz. The new devices are suitable for applications
requiring high precision and extremely low jitter, including medical monitoring and measurement, telecommunications and networking as well as military communications. The XpressO-TC is based on Fox’s proprietary ASIC technology with a 3rd order Delta Sigma Modulator (DSM) to significantly reduce noise to levels comparable with traditional bulk quartz and SAW oscillators. This ASIC family enables the selection of output type, input voltages and temperature performance within the oscillator. E.L. Fox, Jr., president of Fox Electronics,
noted, “Adding this TCXO version to our growing XpressO line brings the cost and performance benefits of our proprietary technology to more end user applications. With the constant pressure of price and performance weighing on many electronic device manufacturers, the continued expansion of our XpressO line will help meet these growing industry demands.” Samples are available. The new XpressO-TC includes Fox’s serial identification system that ensures exceptional quality control and unique traceability of each part throughout the entire manufacturing process.
Fox Electronics |
www.foxonline.com www.cieonline.co.uk
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68