VFC1206 Vishay Foil Resistors High Precision Flip Chip, Patents Pending (Industrialized Countries) FEATURES • Nominal TCR: 0.5ppm/°C (- 55°C to + 125°C) • Resistance Range: 10Ω to 30K • Tolerance: to ± 0.01% Product may not be to scale • Load Life Stability: ± 0.01% maximum ∆R under full rated power at + 70°C for 2000 hours • Shelf Life Stability: 50ppm (0.005%) over several years • Voltage Coefficient: < 0.00001%/volt (< 0.1ppm/V) • Current Noise: < 0.010µV (rms)/volt of applied voltage • Non Inductive: < 0.08µH The VFC1206 is a surface mountable flip chip resistor that utilizes Ultra Precision Bulk Metal® “Z” Foil. This product differs from other Vishay Bulk Metal® Foil surface mount devices in as much as it is installed with the foil side facing the PCB providing better power handling capabilities. The Foil element is isolated from the PCB by a protective overcoating. This overcoating plus the overall product design isolates the resistor from handling and installation stresses. The temperature coefficient of resistance (TCR) curve shown below compares the new revolutionary “Z” Foil with its TCR of < 0.5ppm/°C to the original Vishay “C” Foil. The Bulk Metal® Foil characteristics of excellent long term stability, low noise and availability of tight tolerance are maintained in this Flip Chip configuration. The VFC1206 is available in any value within the specified resistance range. The flip chip configuration is more economical for high volume, anolog applications where high precision is required. FIGURE 1 - NOMINAL TCR COMPARISON OF Z FOIL TO C FOIL TABLE 1 - RESISTANCE VALUE VS TOLERANCE AND TCR VALUE Ω STANDARD TOLERANCE (%)* MAXIMUM TCR** 100Ω to 30K ± 0.01% ± 2.0ppm/°C 50Ω to < 100Ω ± 0.05 ± 3.0ppm/°C 25Ω to < 50Ω ± 0.1 ± 4.0ppm/°C 10Ω to < 25Ω ± 0.25 ± 5.0ppm/°C *Tighter tolerances are available. Please contact Application Engineering. **Range: - 55°C to + 125°C, + 25°C reference TABLE 2 - TYPICAL PERFORMANCE SPECIFICATIONS TEST MIL-PRF-55342 VFC1206 CHARACTERISTIC E MAXIMUM ∆R LIMITS* ∆R LIMITS** + 150 + 100 ∆R R (PPM) + 50 < 0.5PPM/°C Z Alloy 0 - 50 - 100 < 2PPM/°C C Alloy - 150 - 200 - 50 - 55 - 25 0 + 25 + 50 + 75 + 100 + 125 Ambient Temperature (°C) Z Alloy 0.5PPM/°C C Alloy 2PPM/°C The TCR for values < 100Ω are influenced by the termination composition and result in a deviation from this curve. VISHAY FOIL • FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 • GERMANY +49.9287.710 FAX: +49 9287.70435 • ISRAEL +972.3.557.0945 FAX: +972.3.558.9121 Document Number: 63084 Revision 03-Jul-02 Temperature Coefficient of Resistance ± 25ppm/°C See Table 1 Thermal Shock ± 0.10% ± 0.02% Low Temperature Operation ± 0.10% ± 0.02% Short Time Overload ± 0.10% ± 0.02% High Temperature Exposure ± 0.10% ± 0.03% Resistance to Bonding ± 0.20% ± 0.02% Moisture Resistance ± 0.20% ± 0.03% Life 2000hrs at + 70°C ± 0.50% ± 0.01% NOTES: * As shown + 0.01Ω to allow for measurement error. **As shown + 0.01Ω to allow for measurement error for values less than 100Ω. • ITALY + 39.2.300.11919 FAX: +39.2.300.11999 • JAPAN +81.42.729.0661 FAX: +81.42.729.3400 • SINGAPORE +65.788.6668 FAX: +65.788.0988 • SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 • UK +44 191 514 8237 FAX: +44 1953 457 722 • USA +1 610 407-4800 FAX: +1 610 640-9081 www.vishay.com N1 VFC1206 Bulk Metal® Foil Technology High Precision Flip Chip, Patent Pending Vishay Foil Resistors FIGURE 3 - CHIP CONFIGURATION Percent of Rated Power FIGURE 2 - POWER DERATING CURVE –55°C 125 High Purity Alumina Substrate Resistive Bulk Metal® Foil +70°C Rated Power 100 75 50 Solder 25 0 -75 –50 –25 0 +25 +50 +75 Protective Coating +100 +125 +150 +175 Ambient Temperature (°C) FIGURE 4 - DIMENSIONS AND LAND PATTERN in inches (millimeters) Bottom View (Showing Terminals for Mounting): Land Pattern Solder Terminal (2) D W1 W G Z L - 0.003 (0.08) L CHIP SIZE L W W1 Z ± 0.005 (0.13) THICKNESS MAXIMUM D ± 0.005 (0.13) ± 0.003 (0.08) ± 0.003 (0.08) ± 0.003 (0.08) 0.126 (3.20) 0.062 (1.57) 0.025 (0.64) 0.015 (0.38) 0.059 (1.50) 0.126 (3.20) 1206 X G X ± 0.003 (0.08) ± 0.003 (0.08) 0.090 (2.29) 0.062 (1.57) TABLE 3 - PROPERTIES RESISTANCE RANGE (Ω) POWER + 70°C (mW) MAXIMUM VOLTAGE (V) MAXIMUM WEIGHT (mg) 10R - 30K 125 61 10.3 TABLE 4 - ORDERING INFORMATION MODEL CHIP SIZE VFC 1206 RESISTANCE VALUE RESISTANCE RANGE LETTER DESIGNATOR MULTIPLIER FACTOR 10Ω to <1KΩ R Example: 249R00 = 249Ω x 1.0 1K to 30K x 103 K Example: 10K000 = 10.0KΩ TOLERANCE TERMINATION PACKAGING T ± 0.01% Q ± 0.02% A ± 0.05% B ± 0.1% C ± 0.25% D ± 0.5% F ± 1.0% B - solderable T = Tape and Reel W = Waffle Pack Patent Pending VISHAY FOIL • FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 • GERMANY +49.9287.710 FAX: +49 9287.70435 • ISRAEL +972.3.557.0945 FAX: +972.3.558.9121 www.vishay.com N2 • ITALY + 39.2.300.11919 FAX: +39.2.300.11999 • JAPAN +81.42.729.0661 FAX: +81.42.729.3400 • SINGAPORE +65.788.6668 FAX: +65.788.0988 • SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 • UK +44 191 514 8237 FAX: +44 1953 457 722 • USA +1 610 407-4800 FAX: +1 610 640-9081 Document Number: 63084 Revision 03-Jul-02