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VPG Foil Resistors’ New FRFC Flip-Chip Resistors Offer Ultra-Stable Performance, Improved Ruggedness for High Precision Applications
MALVERN, Pa. Feb. 22, 2016 — VPG Foil Resistors announced today that its Vishay Foil Resistors brand has released the FRFC Series, a new family of ultra-high-precision flip chip resistors based on the market-leading Z1 Foil Technology. The FRFC Series delivers remarkable load life stability of 50 ppm, better withstanding to higher temperatures, and better moisture resistance than previous-generation foil resistors. Compared to surface-mount chips with wraparound terminations, the flip chip configuration of the FRFC Series provides PCB space savings of more than 35%.
The FRFC Series owes its high-performance characteristics to a resistive element based on Z1 Foil Technology, a solid alloy that is matched to the ceramic substrate with polyimide bonding to enable a uniform thickness of the bond line, superior adhesion strength, and improved resistance to moisture. Virtually insensitive to destabilizing factors, the FRFC Series features a temperature coefficient of resistance (TCR) or ± 0.2 ppm/°C (−55°C to +125°C, +25°C ref), ESD immunity to 25 kV or more, and noise-free operation. Its power rating is 750 mW at +70°C, a 25% improvement over the VFCP Series, which is already a superior product in the high-precision resistors industry. The FRFC Series flip-chip resistors are offered in the 0805, 1206, 1506, 2010, and 2512 case sizes, with power TCR (ΔR due to self-heating) of 5 ppm at rated power and tight tolerances to ±0.01%.
“The FRFC Series devices provide designers with the most stable resistors available today — allowing them to achieve new benchmark levels in performance,” said Jacky Acoca, Vishay Foil Resistors Director of Sales and Marketing. “In addition to saving on board space, the devices’ flip-chip terminations increase reliability by providing better strain relief to eliminate cracked substrates and board delamination.”
The FRFC Series flip chip resistors are optimized for a wide range of high-precision industrial, telecommunications, medical, and laboratory applications, including bridge networks, gyro navigational controls, pressure sensors, standards and decade boxes, process controls, weighing systems, electron beams, and automatic test equipment.
The new resistors offer a resistance range from 5 W to 125 kW with any conceivable ohmic value within this range — out to six digits — available with no additional cost or lead time effect. They feature a rise time of 1.0 ns with effectively no ringing; a thermal stabilization time of < 1 s (within 10 ppm of steady state value); current noise of 0.010 μVrms/V of applied voltage (< -40 dB); and a voltage coefficient of < 0.1 ppm/V. The RoHS-compliant FRFC resistors offer a non-inductive (< 0.08 μH), non-capacitive design and are available in matched sets upon request.
 
Device Specification Table:
Chip size Rated power (mW) at +70° Resistance range (W)
0805 200 5 to 8 k
1206 300 5 to 25 k
1506 400 5 to 30 k
2010 500 5 to 70 k
2512 750 5 to 125 k
Further information about the FRFC Series and other Vishay Foil Resistors products is available at http://www.vishayfoilresistors.com. Follow Vishay Foil Resistors at http://twitter.com/foilresistor.
About Vishay Precision Group, Inc. (NYSE: VPG)
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.vpgsensors.com.
About VPG Foil Resistors
VPG Foil Resistors 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. (VPG).