“Allowances in total error budget must be made for the stresses — especially mounting and thermal cycling for surface-mount devices — that will change a resistor’s end-of-life tolerance,” said Yuval Hernik, senior director of application engineering for VFR. “These allowances depend on the specific resistor application and the service conditions in which the equipment is installed. The less stable a resistor is, the more allowance for instability is required. These allowances are considered cumulative, and when subtracted from the end-of-life error budget, they impose a tighter tolerance at the point of purchase.“The combination of flip-chip terminations and Z1-Foil construction and materials results in the most stable resistors available, requiring the lowest error allowance. This means that more error allowance can be transferred to active devices — resulting in lower costs — or applied to the foil resistors themselves, allowing for looser initial tolerances than would be required for other resistor technologies.” The FRFC devices are qualified as anti-sulfurated resistors for use in environments with high levels of contamination. Such environments include alternative energy applications, industrial control systems, sensors, RTDs, electric instrumentation, weather and communication base stations, and any electronic appliance used in high concentrations of sulfur. The FRFC 0805 offers a wide resistance range from 5 ohms to 8 kilohms. Any resistance value within this range is available at any tolerance with no additional cost or lead time effect. The resistor features power ratings to 200 mW at +70°C, a rise time of 1.0 ns with effectively no ringing, a thermal stabilization time of less than 1 s (within 10 ppm of steady state value), current noise of 0.010 microvolts rms/V of applied voltage (less than -40 dB), and a voltage coefficient of less than 0.1 ppm/V. The RoHS-compliant device offers a non-inductive (less than 0.08 microhenries), non-capacitive design and is available in matched sets upon request.
Samples and production quantities of the FRFC 0805 are available now, with lead times of five working days for samples and five weeks for larger orders.Further information about the FRFC 0805 and other Vishay Foil Resistors products is available at www.vishayfoilresistors.com. Follow Vishay Foil Resistors at http://twitter.com/foilresistor. About Vishay Precision Group Vishay Precision Group (VPG) is an internationally recognized designer, manufacturer and marketer of: components based on its resistive foil technology; sensors; and sensor-based systems specializing in the growing markets of stress, force, weight, pressure, and current measurements. VPG is a market leader of Foil Technology Products, providing ongoing technology innovations in precision foil resistors and foil strain gages, which are the foundation of the Company’s Force Sensors Products and its Weighing and Control Systems. The product portfolio consists of a variety of well-established brand names recognized for precision and quality in the marketplace. To learn more, visit VPG at www.vishaypg.com. About VPG Foil Resistors VPG Foil Resistors, a part of Vishay Precision Group (VPG), produces the most precise and stable resistors available. Distinguished by the premier brands Vishay Foil Resistors, Powertron, and Alpha Electronics, the VPG Foil Resistors portfolio includes 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. These devices are used in applications requiring a high degree of precision and stability, such as in medical testing equipment, semiconductor equipment, precision measuring instruments, aerospace, and military applications. To learn more, visit www.vishayfoilresistors.com. Bulk Metal is a registered trademark of Vishay Precision Group, Inc. Link to product photo: http://www.flickr.com/photos/47034298@N02/9351592543/sizes/l/in/photostream/ Link to detailed product information: http://www.vishaypg.com/ppg?63237