VFCP Series (Z-Foil) (0805, 1206, VFCP Series (Z-Foil)1506, 2010, 2512) (0805, 1206, 1506, 2010, 2512) Ultra High-Precision Z-Foil Flip Chip Resistor Ultra High-Precision Z-Foil Flip Chip Resistor with TCR of 0.2 ppm/C, 35% Space Saving vs. Wraparound Design and PCR of 5 ppm at Rated Power FEATURES Temperature coefficient of resistance (TCR): 0.2 ppm/C typical (55C to +125C, +25C ref.) Tolerance: to 0.01% (100 ppm) Power coefficient R due to self heating 5 ppm at rated power Load-life stability (70C for 2000 h): 0.005% (50 ppm) Power rating to: 600 mW at +70C critical applications by eliminating the need for corrective Electrostatic discharge (ESD): at least to 25 kV circuitry and reducing the large land patterns needed Resistance range: 5 to 125 k (for lower and higher for a wrap-around configuration. The devices flip-chip values, please contact us) configuration saves up to 35% PCB space compared with a surface-mount chip with wraparound terminations while Bulk Metal Foil resistors are not restricted to standard also providing better strain relief to eliminate cracked values specific as required values can be supplied at substrates and board delamination. no extra cost or delivery (e.g., 1K2345 vs. 1K) In addition to its remarkably improved load-life stability, Non-inductive, non-capacitive design the VFCP Series is noise-free and provides ESD Thermal stabilization time: <1 s (within 10 ppm of protection of 25 kV or more for increased reliability. The steady state value) devices solid element alloy is matched to the substrate, forming a single entity with balanced resistance versus Short time overload: 0.005% (50 ppm) temperature characteristics for an unusually low and predictable TCR over a wide temperature range from Non hot spot design 55C to more than +125C. The adhesive that holds the Rise time: 1 ns effectively no ringing foil to the flat substrate withstands high temperatures, pulsing power, moisture incursions, shock and vibration, Current noise: <0.010 V / V of applied voltage rms and low-temperature exposure while still holding securely (<40 dB) to the foil element. Resistance patterns are photo-etched Voltage coefficient: <0.1 ppm/V into the element to permit the trimming of resistance values to very tight tolerances as low as 0.01%. Non-inductive: <0.08 H The Flip Chips devices are qualified as anti-sulfurated Terminal finishes available: lead (Pb)-free, tin/lead alloy resistors for use in environments with high levels of Compliant to RoHS directive 2002/95/EC* contamination. Such environments include alternative energy applications, industrial control systems, Matched sets are available per request sensors, RTDs, electric instrumentation, weather and Rapid prototype sample quantities are available. communication base stations, and any electronic For more information, please contact us at appliance used in high concentrations of sulfur. The foil vpgsensors.com combination of flip-chip terminations and Z-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 INTRODUCTION to active devicesresulting in lower costsor applied Based on VFRs Bulk Metal Z-Foil technology, the VFCP to the foil resistors themselves, allowing for looser initial Series (foil resistor flip-chip) excels over all previous tolerances than would be required for other resistor stability standards for precision resistors with an order technologies. of magnitude improvement in high-temperature stability, load-life stability, and moisture resistance. These new RELATED VIDEO benchmark levels of performance provide design Refer to Bulk Metal Foil Resistor TCR Performance engineers with the tools to build circuits not previously (Product Demo). achievable while reducing costs and space in the most * This datasheet provides information about parts that are RoHS-compliant and/or parts that are non-RoHS-compliant. For example, parts with lead (Pb) terminations are not RoHS compliant. Please see the information/tables in this datasheet for details. Document No.: 63106Document No.: 63106 For any questions, contact www.vishayfoilresistors.com Revision: 19-Oct-2015Revision: 19-Oct-2015 foil vpgsensors.com 1VFCP Series (Z-Foil)VFCP Series (Z-Foil) (0805, 1206, 1506, 2010, 2512) (0805, 1206, 1506, 2010, 2512) TABLE 1TOLERANCE AND TCR VS. FIGURE 1POWER DERATING CURVE RESISTANCE VALUE 55C +70C 100 Resistance Typical TCR and Max. Spread Tolerance Value (55C to +125C, +25C Ref.) (%) 75 () (ppm/C) 250 to 125k 0.01% 0.2 1.6 50 100 to <250 0.02% 0.2 1.6 25 50 to <100 0.05% 0.2 1.8 25 to <50 0.1% 0.2 2.8 0 75 50 25 0 +25 +50 +75 +100 +125 +150 +175 10 to <25 0.25% 0.2 2.8 Ambient Temperature (C) 5 to <10 0.5% 0.2 7.8 FIGURE 2NOMINAL FIGURE 3TRIMMING TO VALUES RESISTANCE/TEMPERATURE CURVE (conceptual illustration) +500 Interloop capacitance +400 Current path reduction +300 before trimming in series +200 +100 Mutual Current path after trimming 0 inductance reduction Trimming process 100 0.05 ppm/C due to change removes this material 200 in current - 0.1 ppm/C 0.1 ppm/C from shorting strip area direction 300 changing current path 0.14 ppm/C and increasing 400 - 0.16 ppm/C 0.2 ppm/C resistance 500 Foil shown in black, etched spaces in white 55 25 0 +25 +60 +75 +100 +125 Note Ambient Temperature (C) and TCR Chord Slopes To acquire a precision resistance value, the Bulk Metal Foil for Different Temperature Ranges chip is trimmed by selectively removing built-in shorting bars. To increase the resistance in known increments, marked Note areas are cut, producing progressively smaller increases in The TCR values for <100 are influenced by the termination resistance. This method reduces the effect of hot spots and composition and result in deviation from this curve. improves the long-term stability of VFR resistors. TABLE 2MODEL SELECTION TABLE 3LOAD-LIFE STABILITY (+70C for 2000 h) Rated Power Maximum Resistance Max. Chip at +70C Voltage Rating Range Weight Chip Size MAXIMUM R LIMITS Size (mW) (P R) () (mg) 0.005% at 50 mW 0805 0.01% at 100 mW 0805 100 mW 28 V 5 to 8k 5.2 0.005% at 150 mW 1206 250 mW 79 V 5 to 25k 10.3 1206 0.01% at 250 mW 1506 300 mW 95 V 5 to 30k 12 0.005% at 150 mW 1506 2010 400 mW 167 V 5 to 70k 25 0.01% at 300 mW 2512 600 mW 220 V 5 to 125k 35 0.005% at 200 mW 2010 0.01% at 400 mW 0.005% at 500 mW 2512 0.01% at 600 mW www.vishayfoilresistors.com For any questions, contact Document No.: 63106 2 foil vpgsensors.com Revision: 19-Oct-2015 R (ppm) R Percent of Rated Power