Here’s a quick glimpse at the latest passive components launched in 2012
Chip resistor arrays
In August 2012, Vishay Intertechnology Inc introduced a new series of high-precision thin film SMD wraparound chip resistor arrays optimised for high temperature down-hole and aeronautics applications.
Features and USP:The new PRAHT four resistor networks feature an operating temperature range from – 55 °C to + 215 °C with a maximum storage temperature up to + 230 °C, an industry first for any resistor array built on thin film technology.
Available with 1 mm, 1.35 mm or 1.82 mm pitches, the PRAHT series features resistance values from 10 ohms to 2 megohms and power ratings from 10 mW to 20 mW per resistor. The devices offer a very low noise of less than – 35 dB and a voltage coefficient of less than 0.01 ppm/V. The RoHS compliant networks are available with gold terminations for temperatures up to + 230 °C or SnAg terminations for temperatures up to + 200 °C.
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PTC thermistors
In July 2012, Vishay Intertechnology launched radial leaded, positive temperature coefficient (PTC) thermistors.
Features and USP:These devices include nickel thin film elements with positive temperature coefficients of + 4110 ppm/K, fast response time of less than 2 s, and high stability over a wide temperature range from – 55 °C to + 150 °C. The new thermistors are available in two sizes with lead pitches of 2.5 mm and 5.0 mm. They provide designers with a variety of standard resistance values at + 25 °C (R25) from 100 ohms to 5 kilohms, and tolerances of 1 per cent and 5 per cent.
With their long-term stability and high temperature performance, devices in the TFPTL series can be used for temperature measurement, sensing, compensation, and control in industrial and consumer applications. In addition, they can replace silicon based temperature sensors.
For further details: Vishay Intertechnology Asia Pte Ltd; Ph: 65-6788-6668; [email protected]. India distributor: Arrow Electronics India Ltd; Ph: 91-80-41353800; [email protected]. For a list of more distributors, visit www.vishay.com.
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Tantalum capacitors
In August 2012, Kemet introduced the T545 high energy polymer tantalum series of surface mount capacitors.
Features and USP: The T545 Series takes innovation to a new level by providing very high capacitance, low ESR, low profile, and all solid state construction in a surface mount package.
The T545 Series was developed to deliver the highest energy per cc of any tantalum surface mount device offered today. This product is subjected to 100 per cent thermal shock and voltage aging to ensure long term reliability, while its low profile is designed to fit into the most demanding SSD applications. These devices are suitable for applications such as solid state drives (SSD), wireless cards and GPS systems.
For further details: Ph: 91-806-53-76817; www.kemet.com
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Powerline transducers
In November 2012, MECO-G introduced powerline transducers, which convert a sinusoidal AC/DC signal into a standard DC signal.
Features and USP: The transducers have accuracy class 0.5 as a standard feature. Their output is linearly proportional to the measured input signal. Available for current, voltage, frequency, watts, VAR, and DC-isolation, these transducers are highly stable and give output signals like 4-20 mA DC, 0-10 V DC, etc. They operate on 110 V AC, 230 V AC, 24 V DC and 48 V DC, and are available in flame retardant cases with a DIN-rail/wall mounting.
For further details: Goliya Instruments Pvt Ltd; Ph: +91 22 24149657; [email protected], [email protected], www.goliyainstruments.com
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DC link capacitors
In November 2012, TDK Corporation launched the EPCOS CeraLink, an innovative DC link capacitor for frequency converters.
Features and USP: CeraLink is based on a PLZT ceramic material (lead lanthanum zirconate titanate) and covers a capacitance range from 1 µF to 100 µF at a rated voltage of 400 V DC. Another type has a rated voltage of 800 V DC and a capacitance of 5 µF.
The new CeraLink offers many benefits in the stabilisation and filtering of DC link circuits of power converters, especially when compared to conventional capacitor technologies. Thanks to a low ESL value of less than 4 nH as well as a low ESR of less than 4 mΩ, the new capacitors are ideally suited for applications with high switching frequencies and rapid rise times. This includes converters for industrial and automotive electronics that operate with new fast-switching MOSFETS or IGBTs.
For further details: EPCOS India Private Ltd, Ph: +91 80 40 39 06 15; [email protected]; www.epcos.com
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MEMS based gas flow sensor
In October 2012, OMRON Corporation and STMicroelectronics launched a micro-electro-mechanical system (MEMS) based gas flow sensor with industry unique built-in correction for differences in gas composition.
Features and USP: The OMRON/ST sensor solution enables the development of smart gas meters that are much smaller, less expensive, and more power efficient than the conventional equipment, resulting in substantial cost savings for the utility companies and end users alike. It combines OMRON’s MEMS thermal flow transducer with ST’s high-performance analogue front-end IC, delivering high precision gas flow rate measurement with excellent reproducibility. The sensor is intrinsically compensated for both temperature and pressure variations and a built-in circuit compensates for the variation of multiple gas composition. It is dust resistant to comply with international gas-meter standards.
For further details: Ph: 0120 2352999; www.st.com
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Ceramic capacitors
In October 2012, Murata Manufacturing Co Ltd launched metal terminal monolithic ceramic capacitors that achieve high ripple current resistance and high effective capacitance.
Features and USP: The KR3 series capacitors comply with JIS standards and are optimal for general consumer and industrial electronic devices that are subject to thermal stress and/or vibration/mechanical impact. The KC3 series capacitors also comply with the automotive electronic components standard known as AEC-Q200 and are ideal for automotive equipment such as engines, engine control units (ECU), drive system controls, and safety devices.
Since the capacitors have a low loss and a high allowable current capacity, the heat generation of the capacitors (self-heat generation) can be reduced at the time of passing current.
For further details: Murata Electronics (India) Pvt Ltd, Ph: 044-66566777; www.murata.com
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Electrolytic capacitors
In April 2012, Rubycon introduced ultra long life miniature aluminium electrolytic capacitors, LLE series.
Features and USP: LLE series has been realised by employing high reliability electrolyte composition that was developed to stabilise the characteristics over time under high temperature condition, and extreme air-tight sealing rubber material.
The LED light bulbs tend to generate heat more and more by advancement in brightness of LED element and miniaturisation, and there are cases that the expected life time of the set does not make effective use of LED features with the conventional aluminium electrolytic capacitors. In such cases, LLE series achieves almost 2 times the life time of conventional long life capacitor and are the most suitable product as the input capacitor in the LED driver circuits.
For further details: Ph:+91 022 28543154; Fax:+91 22 28543155; [email protected]; www.rubycon.co.jp
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DC link film capacitors
In August 2012, AVX Corporation introduced a new line of polypropylene dielectric DC link film capacitors.
Features and USP: Designated the FB Series, the 2-leaded capacitors feature a voltage rating of 550 V-1200 V, a capacitance range from 0.68-75 uF, are RoHS compliant, and are available in a range of case sizes containing over 100 new ratings. Ideal applications for the series include DC power supplies and inverters for solar power, electric drive, and industrial power systems.
The new FB Series DC link capacitors combine low loss film technology with the self-healing properties of the dielectric to ensure long lifetimes and low thermal losses in power applications.
Rated for use from -40°C to +100°C, AVX’s FB Series DC link film capacitors are available in 14 case sizes with three standard lead pitch options: 27.5mm, 37.5mm, and 52.5mm.
For further details: Ph: 91-80-6450-0715; www.avx.com
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Optical sensors
In July 2012, Maxim Integrated Products announced four digital optical sensors that advance analogue integration with sensor fusion.
Features and USP: The MAX44004/05/06/08 measure red/green/blue (RGB) light levels, ambient visible light, proximity to the sensor, ambient infrared (IR) levels and temperature. As many as seven sensors are integrated into one compact optical package. The sensors provide robust and repeatable measurements and the MAX44005/MAX44006/MAX44008 all consume an industry-low 20 µA each. The high integration reduces system cost, eliminates several external components and greatly simplifies design. These optical sensors can be used in a wide variety of applications such as smartphones, tablets, portable consumer devices, displays, digital light management, security systems and medical devices.
For further details: Ph: 30285800; www.maxim-ic.com
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