MALVERN, PENNSYLVANIA — Jan. 16, 2012 — Vishay Precision Group, Inc. (NYSE: VPG) today announced that its HTH(G) high-temperature Bulk Metal® Foil resistors have been honored with a Best Electronic Design award from Electronic Design magazine. Winners for 2011 were announced in the magazine’s Dec. 8 issue. Staff editors selected the award winners for the best technology, products and standards, while readers selected the best Ideas for Design published in the past 12 months. The HTHG resistors were among four devices winning in the Components category.
The HTHG from Vishay Foil Resistors (VFR) is an ultra-high-precision Bulk Metal® Z1-Foil hybrid surface-mount chip resistor connected using gold wire bonding. Designed for high-temperature applications to +240°C, the HTHG offers improved heat dissipation, providing nearly a 100°C extension in operating temperature range over precision thin film chip resistors.
The HTHG series is based on Z1-Foil technology, which provides an order of magnitude reduction in the Bulk Metal Foil element’s sensitivity to temperature changes — both external and internal — while providing long-term stability in high-temperature environments. Z1- Foil resistor technology manages stresses to counterbalance forces with opposing effects, thus utilizing those stresses to produce an extremely stable resistor.
HTHG devices offer TCR of ±1 ppm/°C from -55°C to +125°C and ±2.5 ppm/°C from -55°C to +220°C, +25°C ref. The resistors feature exceptional load-life stability to ±0.05% at +220°C for 2,000 hours at working power, long-term stability to ±0.05% at +240°C for 2,000 hours (no power), and tight tolerances to ±0.02%. The devices are capable of withstanding electrostatic discharges at least to 25 kV without degradation.
The HTHG series devices provide a wide resistance range from 5 Ω to 125 kΩ, with any resistance value within this range available at any tolerance with no additional cost or lead time effect. The flat planar structure of the foil resistor, with the resistance element at the surface (before coating or encapsulation), lends itself to a unique process for remote trimming resistors to value in order to eliminate current noise, hot spots and current density compression wherever the resistance grid changes direction. The resistors feature a rise time of 1.0 ns, with effectively no ringing, a thermal stabilization time of < 1 s (nominal value achieved within 10 ppm of steady state value), current noise of 0.010 µVrms per volt of applied voltage (< -40 dB), and a voltage coefficient of < 0.1 ppm/V. The devices are offered in 5x5, 15x5, and 15x10 chip sizes, in addition to six case sizes ranging from 0603 to 2512.
The Best Electronic Design awards are segmented into editorial “beats” as well as vertical markets, such as industrial and medical. The editors are free to choose what they consider to be the best in these areas. The staff editors include Don Tuite for analog and power, Lou Frenzel for communications, David Maliniak for EDA and test and measurement, Bill Wong for digital and embedded and Mat Dirjish for components. Winners receive a Best Electronic Design crystal trophy, as well as a logo that they can post on their own Web site. The complete list of winners is available here: http://electronicdesign.com/article/news/Electronic-Design-Announces-2011-Best-Electronic-Design-Award-Winners-.aspx
About Vishay Foil Resistors
Vishay Foil Resistors is a division of Vishay Precision Group, producing the most precise and stable resistors available. The portfolio comprises products in a variety of resistor and package configurations to meet the needs of a wide range of applications: discrete resistors and resistor networks in surface mount and through-hole (fixed-lead) configurations; customized chip resistor networks; precision trimming potentiometers; and discrete chips for use in hybrid circuits. The foil resistors and current sensors are used in applications requiring a high degree of precision and stability, such as in medical testing equipment, high performance audio equipment, precision measuring instruments, aerospace, and military applications.
About Vishay Precision Group
Vishay Precision Group (VPG) produces sensors based on precision resistive foil technology, and sensor-based systems. It provides vertically integrated products and solutions for multiple growing markets in the areas of stress, force, weight, pressure and current measurements. As a spin-off from Vishay Intertechnology, VPG’s decades-long track record encompasses innovations in precision foil resistors, current sensors, and strain gages, which have served as a foundation for VPG’s more recent expansion into strain gage instrumentation, load cells and transducers, weighing modules and complete systems for process control and on-board weighing. Vishay Precision Group may be found on the Internet at www.vishaypg.com.