Y1680V0576TT9L

VSH144Z (Z-Foil) Ultra High Precision Z-Bulk Metal® Foil Technology Low Profile Conformally Coated Voltage Divider Resistor with TCR Tracking to 0.1 ppm/°C, Power Coefficient Tracking of 5 ppm at Rated Power, and Tolerance Match to 0.01 % (100 ppm) FEATURES  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.) tracking: 0.1 ppm/°C typical  Tolerance: absolute and matching to 0.01 % (100 ppm)  Power coefficient tracking “R due to self heating”: 5 ppm at rated power  Power rating: 0.2 W at 70 °C, for the entire resistive element R1 and R2, divided proportionally between the two values APPLICATIONS R2  Instrumentation amplifiers  Bridge networks  Load life ratio stability: < 0.01 % (100 ppm) 0.2 W at 70 °C for 2000 h R1  Differential amplifiers Vin - Vout +  Military VSH144Z  Space  Maximum working voltage: 200 V  Resistance range: 100R to 20K per resistive element  Automatic test equipment  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)  Down-hole (high temperature)  Electrostatic discharge (ESD) up to 25 000 V  Medical  Non-inductive, non-capacitive design  Rise time: 1 ns effectively no ringing  Current noise: 0.010 µVRMS/V of applied voltage (< - 40 dB) TABLE 1A - MODEL VSH144Z SPECIFICATIONS RESISTANCE VALUES ABSOLUTE TOLERANCE  500  to 20 k ± 0.01 % 100  to < 500  ± 0.02 %  Thermal EMF: 0.05 µV/°C typical ABSOLUTE TCR (- 55 °C to + 125 °C, + 25 °C ref.) TYPICAL AND MAX. SPREAD ± 0.2 ppm/°C ± 2.5 ppm/°C  Voltage coefficient: < 0.1 ppm/V  Non-inductive: < 0.08 µH  Non hot spot design  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 TABLE 1B - MODEL VSH144Z SPECIFICATIONS RESISTANCE RATIO 1:1 > 1:1 to 4:1 > 4:1 to 10:1 > 10:1 TOLERANCE MATCH 0.01 % 0.02 % TCR TRACKING MAX. 0.5 ppm/°C  Prototype quantities available in just 5 working days or sooner. For more information, please contact foil@vpgsensors.com  For better performances please contact us 0.75 ppm/°C 1.5 ppm/°C 2.0 ppm/°C * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63173 Revision: 5-Mar-15 For any questions, contact foil@vpgsensors.com www.vishayfoilresistors.com 1 VSH144Z (Z-Foil) INTRODUCTION The VSH144Z 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 or anywhere else that requires two resistors to maintain a stable ratio under power and throughout all application variables. Why are extremely low TCR resistors required? This is a proper question when evaluating system cost. The answers are as numerous as the system in which they are installed but a few examples may provide insight: 1) Commercial broadcast equipment heats up through the day and requires constant manual adjustment through the day for proper signal adjustment. 2) Satellites in synchronous orbit rotate through temperature extremes. 3) A fighter jet resting on the 115° desert floor takes off and reaches altitude at - 60° in less than two minutes. 4) A system that requires fast response time in order to produce the required signal with minimum stabilization time. Resistors may be selected for TCR tracking but that is only useful when the resistors are operating at the same temperature. If the resistors are operating at different temperatures because of differential self-heating, or due to locally-different thermal influence from different adjacent components, or because they are operating in different regions of the equipment, the ratios change proportional to the differences in operating temperature times and the absolute TCR in addition to differences in TCR tracking ratios. Additionally, when resistors within a set have different absolute TCR’s (individual TCR’s - not relative or tracking TCR), the ratios change even more due to the differential self-heating as well as to differential ambient temperatures:  ratio = (TCR track x  temp 1) + (absolute TCR x  temp 2) where  temp 1 is the change of ambient temperature and  temp 2 is the temperature difference between two resistors due to differential self-heating. Differential self-heating can occur, for example, when the same current flows through resistors of different resistance values. The construction of the VSH144Z keeps both resistors at the same temperature regardless of resistance value or differential power. For best performance in such applications, low absolute TCRs are required. What is TCR tracking and why it is important? TCR tracking is a measure of the uniformity of the thermally-induced resistance changes in two or more resistors. Resistors “track” closely when their individual TCRs are close, and this is a measure of how closely these resistors will maintain their initial ratios over various temperature changes. Some resistors may increase in value with an increase in temperature (positive TCR) while others will decrease in value with an increase in temperature (negative TCR), or, they may not change in value at the same rate (differential TCR). 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 where 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 differential self heating effects of the I2R differences of the feedback VS the input resistor. Good design practice requires 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. What is the reason for such excellent stability? The secret of Bulk Metal Z-Foil technology’s benchmark stability lies in the fact that it retains the inherent metallurgical stability of the alloy from which it is made: the alloy is not melted and drawn as it is in the manufacture of wirewound resistors, nor is it evaporated and re-deposited or sputtered as it is in thin-film resistors. This underlying metallurgical stability is preserved throughout the manufacturing processes by preventing the introduction of additional stresses into the final component. Our application engineering department is available to advise and make recommendations. For non-standard technical requirements and special applications. Please contact foil@vpgsensors.com.        www.vishayfoilresistors.com 2 For any questions, contact foil@vpgsensors.com Document Number: 63173 Revision: 5-Mar-15 VSH144Z (Z-Foil) FIGURE 1 - TRIMMING TO VALUES (conceptual illustration) Interloop Capacitance Reduction in Series Current Path Before Trimming Current Path After Trimming Mutual Inductance Reduction due to Opposing Current in Adjacent Lines Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance Note: Foil shown in black, etched spaces in white FIGURE 2 - STANDARD PRINTING AND DIMENSIONS in inches (millimeters) Model VSH144Z and Schematic (2) 0.263 ±0.02 (6.7 ±0.5) 0.098 +0.008/–0.01 (2.5 +0.2/–0.3) (4) (3) VSHZ(T) (D.C)(-) (R1) (R2) R1 0.283 ± 0.04 (7.2 ± 1.0) R2 1.0 (25.4) Min. 1 0.100 (2.54) 0.200 (5.08) 2 3 Dimensional Tolerance: ± 0.010" (0.25) (1) (2) (3) (4) Lead wires: #22 AWG solder coated copper, 0.75" minimum length Each divider pair consists of two resistors on one single chip For lead (Pb)-free: print “T” after VSHZ and “-” after (D.C.) If the resistance value contains more than 5 characters, the VCODE will be printed instead (see table 2).  FIGURE 3 - POWER DERATING CURVE Percent of Rated Power at + 70 °C 100 % - 55 °C FIGURE 4 - TYPICAL RESISTANCE/ TEMPERATURE CURVE (for more details see table 1A) + 70 °C Rated Power TCR Chord Slopes for Different Temperature Ranges + 500 75 % + 400 + 300 + 200 Recommended operation for < 150 ppm ΔR after 2000 h load life 50 % + 100 ΔR 0 R (ppm) - 100 25 % 0.05 ppm/°C - 200 - 0.1 ppm/°C - 300 0.14 ppm/°C - 400 0 - 75 - 50 - 25 0 0.1 ppm/°C - 0.16 ppm/°C 0.2 ppm/°C - 500 + 25 + 50 + 75 + 100 + 125 + 150 + 175 Ambient Temperature (°C) - 55 - 25 0 + 25 + 60 + 75 + 100 + 125 Ambient Temperature (°C) Note: • Power is divided proportionally between the 2 values  Document Number: 63173 Revision: 5-Mar-15      For any questions, contact foil@vpgsensors.com www.vishayfoilresistors.com 3 VSH144Z (Z-Foil) TABLE 2 - EXAMPLES OF VCODES FOR POPULAR VALUES (other values available on request) VSH144Z RATIOS VCODES R1 R2 VCODES R1 R2 V0009 20K 20K V0058 2K 20K V0010 20K 10K V0030 2K 18K V0100 20K 2K V0029 2K 4K V0055 19K4 9K7 V0059 2K 2K V0223 17K5 20K V0103 2K 3K V0097 15K 15K V0154 1K5 3K V0001 10K 10K V0032 1K 16K V0042 10K 8K323 V0121 1K 2K V0006 10K 2K V0004 1K 1K V0166 10K 15K V0379 1K 7K V0226 9K 10K V0374 800R 800R V0003 9K 1K V0022 511R 16K2 V0013 8K 16K V0091 500R 500R V0107 6K 20K V0162 500R 15K V0014 6K 7K V0378 500R 4K5 V0160 6K 6K V0061 300R 300R V0159 5K5 7K7 V0088 100R 100R V0005 5K 10K V0380 100R 15K V0002 5K 5K V0375 100R 12K3 V0373 4K 12K V0381 100R 50R V0026 3K 19K2 V0377 50R 28K V0156 3K 6K V0376 35R 20K V0158 2K7 10K - - - Note • A combination of these values is also available in reverse order. www.vishayfoilresistors.com 4 For any questions, contact foil@vpgsensors.com Document Number: 63173 Revision: 5-Mar-15 VSH144Z (Z-Foil) TABLE 3 - GLOBAL PART NUMBER INFORMATION (1) NEW GLOBAL PART NUMBER: Y1680V0058QT9L (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 1 6 8 0 V 0 0 5 8 Q T 9 L PRODUCT CODE RESISTANCE TOLERANCE CHARACTERISTICS 1680 = VSH144Z 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 Y1680 V0058 Q T 9 L: TYPE: VSH144Z VALUES: 2K/20K ABSOLUTE TOLERANCE: ± 0.02 % TOLERANCE MATCH: 0.01 % TERMINATION: lead (Pb)-free PACKAGING: bulk pack HISTORICAL PART NUMBER: VSH144ZT 2K/20K TCR0.2 Q T B (will continue to be used) VSH144Z T 2K/20K TCR0.2 Q T B MODEL TERMINATION OHMIC VALUE TCR CHARACTERISTIC ABSOLUTE TOLERANCE TOLERANCE MATCH PACKAGING VSH144Z 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 Document Number: 63173 Revision: 5-Mar-15 For any questions, contact foil@vpgsensors.com www.vishayfoilresistors.com 5 Legal Disclaimer Notice Vishay Precision Group, Inc. 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Document No.: 63999 Revision: 15-Jul-2014 www.vpgsensors.com 1