DSMDSM High Precision Bulk Metal Foil Surface Mount Voltage Divider High Precision Bulk Metal Foil Surface Mount Voltage Divider TCR Tracking of <0.5 ppm/C, Tolerance Match of 0.01% and Stability of 0.005% (50 ppm) FEATURES Temperature coefficient of resistance (TCR): Absolute: 2 ppm/C typical (55C to +125C, +25C ref.) Tracking: 0.5 ppm/C typical Tolerance: absolute: 0.02% match: 0.01% INTRODUCTION Power rating: at 70C: entire package: 0.1 W each resistor: 0.05 W Bulk Metal Foil (BMF) technology out-performs all other Ratio stability: 0.005% (0.05 W at 70C, 2000 h) resistor technologies available today for applications that require high precision and high stability. Resistance range: 100 to 12 k per resistor Large variety of resistance ratios: 1:120 This technology has been invented, patented and pioneered by Vishay Foil Resistors (VFR). Products based Bulk Metal Foil resistors are not restricted to standard on this technology are the most suitable for a wide range values/ratios specific as required values/ratios can of appilcations. be supplied at no extra cost or delivery (e.g., 1K234/2K345 vs. 1K/2K) BMF technology allows the production of customer Thermal stabilization time <1 s (nominal value achieved oriented products designed to satisfy challenging and within 10 ppm of steady state value) specific technical requirements. Model DSM offers low TCR (both absolute and tracking), excellent load life Electrostatic discharge (ESD) at least to 25kV stability, tight tolerance, excellent ratio stability, and low Short time overload: 0.005% current noise, all in one package. Non inductive, non capacitive design The DSM surface mount divider provides a matched pair Rise time: 1 ns effectively no ringing of Bulk Metal Foil resistors in a small epoxy Current noise: <0.010 V /V of applied voltage RMS molded package. (40 dB) The electrical specification of this integrated construction Voltage coefficient: 0.1 ppm/V offers improved performance and better real estate Non inductive: 0.08 H utilization over discrete resistors and matched pairs. Non hot spot design VFRs application engineering department is available to Terminals: silver coated copper alloy (see Table 5) advise and make recommendations. For non-standard Compliant to RoHS directive 2002/95/EC technical requirements and special applications, please contact: foil vpgsensors.com. Prototype quantities available in just 5 working days or sooner. For more information, please contact: foil vpgsensors.com Figure 1 Schematic For better performances, please see DSMZ datasheet (Z-Foil) R R 1 2 OPTION 1 OPTION 2 SAME OHMIC VALUE, RESISTOR PAIR SAME ABSOLUTE TOLERANCE R /R - DIFFERENT VALUES 1 2 Table 1 Model DSM Specifications ABSOLUTE TCR TOLERANCE RESISTANCE MODEL (55C TO +125C, +25C REF.) TCR TRACKING RATIO ABSOLUTE MATCH TYPICAL + MAX. SPREAD R1/R2 = 1 1.0 ppm/C 0.02% 0.01% DSM 2 ppm/C3 ppm/C 1 <R1/R2 10 2.0 ppm/C 0.05% 0.02% 10 <R1/R2 120 3.0 ppm/C 0.1% 0.05% Note * 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. 9667-EN9667-EN For any questions, contact www.vishayfoilresistors.com Rev 25-MarRev 25-Mar-2020-2020 foil vpgsensors.com 1DSMDSM Figure 2 Power Derating Curve Figure 3 Typical Resistance/Temperature Curve (for more details, see table 1) 110 + 150 100 90 + 100 80 2 ppm/C + 50 70 (+ 25C reference) R 60 R 0 50 (ppm) 40 50 30 100 20 10 150 0 60 40 20 020406080 100 120 140 200 50 25 0+ 25 + 50 + 75 + 100+ 125 125 55 70 55 Ambient Temperature (C) Ambient Temperature (C) Figure 4 Trimming to Values Figure 5 Recommended Land Pattern Interloop 0.063 0.004 capacitance Current path (1.6 0.1) reduction before trimming in series Mutual Current path after trimming inductance reduction Trimming process due to change removes this material in current from shorting strip area direction 0.100 0.004 changing current path (2.54 0.1) and increasing resistance Foil shown in black, etched spaces in white Note To acquire a precision resistance value, the Bulk Metal Foil chip is trimmed by selectively removing built-in shorting bars. To increase the resistance in known increments, marked areas are cut, producing progressively smaller increases in resistance. This method reduces the effect of hot spots and improves the long-term stability of Bulk Metal Foil resistors. Figure 6 Dimensions and Imprinting w L SIDE VIEW FRONT VIEW t TW TW P P S TOPVIEW BOTTOM VIEW RATIO TOLERANCE CODE VALUE R2 VALUE R1 3 1 Notes (1) If the resistance value of R1 and R2 (1) (2) 10K Q 10K contains more than 6 characters 3 B0219 together, the VCODE will be printed instead (see Resistance Value Code List for Popular Ratios Table) 2 followed by the ratio tolerance code. (2) R1between PIN1 and PIN3 1 2 STAND OFF DATE CODE R2between PIN2 and PIN3. DIMENSIONS L W H P TW TH S t INCHES 0.1600.008 0.1060.008 0.0630.008 0.0310.005 0.0310.004 0.0430.008 0.1000.008 0.0050.002 MILLIMETERS 4.060.20 2.690.20 1.600.20 0.790.13 0.790.10 1.090.20 2.54 0.20 0.130.05 www.vishayfoilresistors.com For any questions, contact 9667-EN 2 foil vpgsensors.com Rev 25-Mar-2020 H TH Percent of Rated Wattage 0.040 0.004 (1.02 0.1) 0.035 0.004 (0.89 0.1) 0.071 0.004 (1.8 0.1) 0.100 0.004 (2.54 0.1) TW