Y0115V0535BB0L

VFD244Z (Z-Foil) Bulk Metal® Foil Technology Ultra High Precision Z-Foil Voltage Divider Resistors with TCR Tracking to 0.1 ppm/°C, Power Coefficient Tracking of 5 ppm at Rated Power, and Tolerance Match to 0.005 % (50 ppm) FEATURES VF D R (D 244 .C Z .) VF  Temperature coefficient of resistance (TCR): absolute: ± 0.05 ppm/°C typical (0 °C to + 60 °C) ± 0.2 ppm/°C typical (- 55 °C to + 125 °C, + 25 °C ref.) TCR tracking: 0.1 ppm/°C typical  Tolerance: absolute and matching to 0.005 % (50 ppm)  Resistance range: 1  to 100 k per resistive element  Power coefficient tracking “R due to self heating”: 5 ppm at rated power Vishay Foil resistors are not restricted to standard values/ratios; specific “as requested” values/ratios can be supplied at no extra cost or delivery (e.g. 1K2345 vs. 1K)  Electrostatic discharge (ESD) up to 25 000 V R2 Instrumentation amplifiers Bridge networks Differential amplifiers Vin Military Space Medical Automatic test equipment Down-hole (high temperature)  Non-inductive, non-capacitive design R1  Rise time: 1 ns effectively no ringing + Vout VFD244 VFD244Z 1  to < 100 k  Current noise: 0.010 µVRMS/V of applied voltage (< - 40 dB)  Thermal EMF: 0.05 µV/°C typical  Voltage coefficient: < 0.1 ppm/V  Non-inductive: < 0.08 µH  Non hot spot design TABLE 1 - RATED POWER PER ELEMENT RESISTANCE ELEMENT VALUE  Load life ratio stability: < 0.005 % (50 ppm) 1 W at 70 °C for 2000 h  Maximum working voltage: 350 V APPLICATIONS          Power rating: up to 1 W at 70 °C, for the entire package, divided proportionally between the two values MAXIMUM POWER RATING AT 70 °C PER ENTIRE PACKAGE MAXIMUM POWER RATING AT 125 °C PER ENTIRE PACKAGE 1W (not exceed 0.6 W per element) 0.5 W (not exceed 0.3 W per element)  Thermal stabilization time < 1 s (nominal value achieved within 10 ppm of steady state value)  Terminal finish: lead (Pb)-free or tin/lead alloy  Compliant to RoHS directive 2002/95/EC  Prototype quantities available in just 5 working days or sooner. For more information, please contact foil@vpgsensors.com  For better performances please contact us TABLE 2 - MODEL VFD244Z SPECIFICATIONS MODEL RESISTANCE VALUES 500  to 100 k 100  to 500  VFD244Z ABSOLUTE TCR (- 55 °C to + 125 °C, + 25 °C ref.) TYPICAL AND MAX. SPREAD ± 0.2 ppm/°C ± 1.8 ppm/°C TOLERANCE TCR TRACKING (MAX.) ABSOLUTE MATCH SAME VALUES ± 0.005 % 0.005 % 0.5 ppm/°C DIFFERENT VALUES 1.5 ppm/°C ± 0.005 % 0.01 % 1.0 ppm/°C 2.0 ppm/°C 50  to 100  ± 0.2 ppm/°C ± 2.3 ppm/°C ± 0.01 % 0.02 % 1.5 ppm/°C 2.5 ppm/°C 25  to 50  ± 0.2 ppm/°C ± 2.8 ppm/°C ± 0.01 % 0.02 % 2.0 ppm/°C 3.0 ppm/°C 10  to 25  ± 0.2 ppm/°C ± 3.3 ppm/°C ± 0.02 % 0.04 % 2.5 ppm/°C 3.5 ppm/°C 5  to 10  ± 0.2 ppm/°C ± 3.8 ppm/°C ± 0.05 % 0.05 % 3.0 ppm/°C 4.0 ppm/°C * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63176 Revision: 5-Mar-15 For any questions, contact foil@vpgsensors.com www.vishayfoilresistors.com 1 VFD244Z (Z-Foil) INTRODUCTION The VFD244Z voltage divider is based on the latest generation of Bulk Metal Z-Foil technology which is the most recommended solution for ultra high precision, stability and reliable voltage division. The four fundamental factors determining how “ideal” a precision divider and network will be: 1. Initial resistance matching - or how closely the absolute resistance value of same value resistors can be matched. 2. Initial ratio matching - or how accurately a specified ratio between resistors of different values will be ( a corollary of how precisely the value of individual resistors can be controlled). 3. Tracking in operation - or how precisely the initial ratios are maintained under a wide range of operating conditions (temperature, humidity, load, etc.) 4. Fast response without ringing - or ability of the divider, network to react to rapid switching without blocking the circuit. This depends on the inductance and capacitance of the network, as well as of the individual resistors in the network. VFR VFD244Z with the Z-Foil technology is designed and manufactured to eliminate the inter-parameter compromise inherent in all other types of precision resistors. All important characteristics - tolerance, long term shelf life and load stability, temperature coefficient, noise, capacitance and inductance - are optimum, approaching in total performances the theoretical ideal, straight wire.  The VFD244Z maintain all its design, physical and electrical characteristics. These factors are both measurable and predictable before, during and after manufacture. Why is the absolute TCR of each resistors is more important the initial TCR tracking? Depending on technology differences, some resistors may increase in value with an increase in temperature (+TCR) while others will decrease in value with an increase in temperature (-TCR), or, they may not change in value at the same rate. Other temperature effects, such as self heating due to the application of power can add to the ambient temperature effects. An example of these effects can be seen with two resistors with different TCR characteristics are used around an operation amplifier. The amplification ratio will be affected by the differential TCR of the resistors and will be compounded by the self heating effects of the I2R differences of the feedback vs. the sense resistor. Good design practice would be to use fundamentally low TCR networks in this application since this would minimize both varying temperature and self heating effects. This could not be accomplished with high TCR resistors, even with good tracking. Our application engineering department is available to advise and make recommendations. For non-standard technical requirements and special applications. Please contact us. FIGURE 1 - TRIMMING TO VALUES (conceptual illustration) Interloop Capacitance Reduction in Series Mutual Inductance Reduction due to Opposing Current in Adjacent Lines Current Path Before Trimming Current Path After Trimming Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance Note: Foil shown in black, etched spaces in white www.vishayfoilresistors.com 2 For any questions, contact foil@vpgsensors.com Document Number: 63176 Revision: 5-Mar-15 VFD244Z (Z-Foil) FIGURE 2 - STANDARD PRINTING AND DIMENSIONS in millimeters (inches) Model VFD244Z and Schematic (2) 3.5 (0.138) VFR VFD244Z (D.C.) 10.5 (0.413) Match Tolerance (R2) (Tol.) (R1) 8.9 (0.350) 1 0.3 (0.012) R1 R2 R1 Indicator 19.05 Min. (1) (0.75 Min.) 1 2 1 Ø 0.6 (0.024) 3 3 2 2 3 1 Dimensional Tolerance: ± 0.2 (0.008) 2.54 (0.100) (1) (2) Lead wires: #22 AWG solder coated copper, Each resistor contains 2 chips of two resistive elements  FIGURE 4 - TYPICAL RESISTANCE/ TEMPERATURE CURVE (for more details see table 2) FIGURE 3 - POWER DERATING CURVE VFD244Z Percent of Rated Power at + 70 °C 100 % - 55 °C + 70 °C TCR Chord Slopes for Different Temperature Ranges Rated Power + 500 + 400 75 % + 300 + 200 + 100 ΔR 0 R (ppm) - 100 Recommended operation for < 150 ppm ΔR after 2000 h load life 50 % 0.05 ppm/°C - 200 25 % - 0.1 ppm/°C - 300 0.1 ppm/°C 0.14 ppm/°C - 400 - 0.16 ppm/°C 0.2 ppm/°C - 500 0 - 75 - 50 - 25 0 - 55 + 25 + 50 + 75 + 100 + 125 + 150 + 175 + 200 Ambient Temperature (°C) Document Number: 63176 Revision: 5-Mar-15 0 + 25 + 60 + 75 + 100 + 125 Ambient Temperature (°C) Note: • Power is divided proportionally between the 2 values (see table 1)  - 25      For any questions, contact foil@vpgsensors.com www.vishayfoilresistors.com 3 VFD244Z (Z-Foil) TABLE 3 - GLOBAL PART NUMBER INFORMATION (1) NEW GLOBAL PART NUMBER: Y0115V0058QT9L (preferred part number format) DENOTES PRECISION VCODE TOLERANCE MATCH PACKAGING Y RESISTANCE VALUE CODE V = 0.005 % T = 0.01 % Q = 0.02 % A = 0.05 % B = 0.1 % D = 0.5 % F = 1.0 % L = bulk pack Y 0 1 1 5 V 0 0 5 8 Q T 9 L PRODUCT CODE RESISTANCE TOLERANCE CHARACTERISTICS 0115 = VFD244Z V = ± 0.005 % T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.1 % D = ± 0.5 % F = ± 1.0 % 0 = standard 9 = lead (Pb)-free 1 to 999 = custom  FOR EXAMPLE: ABOVE GLOBAL ORDER Y0115 V0058 Q T 9 L: TYPE: VFD244Z VALUES: 2K/20K ABSOLUTE TOLERANCE: ± 0.02 % TOLERANCE MATCH: 0.01 % TERMINATION: lead (Pb)-free PACKAGING: bulk pack HISTORICAL PART NUMBER: VFD244ZT 2K/20K TCR0.2 Q T B (will continue to be used) VFD244Z T 2K/20K TCR0.2 Q T B MODEL TERMINATION OHMIC VALUE TCR CHARACTERISTIC ABSOLUTE TOLERANCE TOLERANCE MATCH PACKAGING VFD244Z T = lead (Pb)-free None = tin/lead alloy R1 = 2 k R2 = 20 k V T Q A B D F = ± 0.005 % = ± 0.01 % = ± 0.02 % = ± 0.05 % = ± 0.1 % = ± 0.5 % = ± 1.0 % V = 0.005 % T = 0.01 % Q = 0.02 % A = 0.05 % B = 0.1 % D = 0.5 % F = 1.0 % B = bulk pack Note (1) For non-standard requests, please contact application engineering www.vishayfoilresistors.com 4 For any questions, contact foil@vpgsensors.com Document Number: 63176 Revision: 5-Mar-15 Legal Disclaimer Notice Vishay Precision Group, Inc. 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Document No.: 63999 Revision: 15-Jul-2014 www.vpgsensors.com 1