DSMZ (Z-Foil)DSMZ (Z-Foil) Ultra High Precision Bulk Metal Z-Foil Surface Mount Voltage Divider Ultra High Precision Bulk Metal Z-Foil Surface Mount Voltage Divider TCR Tracking of <0.1 ppm/C, PCR of 5 ppm at Rated Power and Stability of 0.005% (50 ppm) FEATURES Temperature coefficient of resistance (TCR): Absolute: 0.05 ppm/C typ. (0C to +60C) 0.2ppm/C typ. (55C to +125C, +25C Ref.) Tracking: 0.1 ppm/C typical Power coefficient tracking R due to self heating: 5 ppm at rated power INTRODUCTION Power rating at 70C: entire package: 0.1 W, each resistor: 0.05 W Bulk Metal Z-Foil technology out-performs all other Tolerance: absolute: 0.02% match: 0.01% resistor technologies available today for applications that require ultra-high precision and ultra-high stabilitly. Ratio stability: 0.005% (0.05 W at 70C, 2000 h) Resistance range: 100 to 10 k per resistor The Z-Foil technology provides a significant reduction of the resistive elements sensitivity to ambient temperature Large variety of resistance ratios: 1:100 variations (TCR) and to self heating when power is applied Foil resistors are not restricted to standard values/ (power coefficient). ratios specific as required values/ratios can be supplied at no extra cost or delivery The DSMZ offers low TCR (both absolute and tracking), (e.g., 1K234/2K345 vs. 1K/2K) low PCR, excellent load life stability, tight tolerance match, excellent ratio stability, low thermal EMF, and low Electrostatic discharge (ESD) up to 25000 V current noise all in one package. Short time overload 0.005% The DSMZ surface mount divider provides a matched pair Non-inductive, non-capacitive design of Bulk Metal Z-Foil resistors in a small epoxy molded Rise time: 1 ns effectively no ringing package. The electrical specification of this integrated Current noise: <40 dB construction offers improved performance and better Thermal EMF: 0.05 V/C typical real estate utilization over discrete resistors and matched pairs. Our application engineering department is available Voltage coefficient: <0.1 ppm/V to advise and make recommendations. For non-standard Non inductive: <0.08 H technical requirements and special applications, Non hot spot design please contact us. Terminals: silver coated copper alloy Compliant to RoHS directive 2002/95/EC Figure 1 Schematic Prototype quantities available in just 5 working days or sooner. For more information, please contact: foil vpgsensors.com For better performances, please contact: R R application engineering 1 2 OPTION 1 OPTION 2 SAME OHMIC VALUE, RESISTOR PAIR APPLICATIONS SAME ABSOLUTE TOLERANCE R /R - DIFFERENT VALUES 1 2 Instrumentation amplifiers Bridge networks Differential amplifiers Ratio arms in bridge circuits Medical and test equipment R2 Military Airborne, etc. R1 Vin - Vout + DSMZ 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. 4153-EN4153-EN For any questions, contact www.vishayfoilresistors.com Rev 01-May-2020Rev 01-May-2020 foil vpgsensors.com 1DSMZ (Z-Foil)DSMZ (Z-Foil) (1) Table 1 - Model DSMZ Specifications Absolute TCR Tolerance (- 55 C to +125 C, Resistance Values Resistance Ratio TCR Tracking +25 C Ref.) Absolute Match typical + max. spread R1/R2 = 1 0.5 ppm/C 0.02 % 0.01 % 100 to 10 k 0.2 ppm/C 1 < R1/R2 10 1.0 ppm/C 0.05 % 0.02 % (2) per resistor 2.0 ppm/C 10 < R1/R2 100 2.0 ppm/C 0.1 % 0.05 % Note (1) Tighter performances are available (2) For resistance values above 10 k per resistor, please contact application engineering Figure 2 Power Derating Curve Figure 3 Typical Resistance/Temperature Curve (for more details, see table 1) 110 +500 100 +400 90 +300 80 +200 70 +100 R 60 R 0 50 (ppm) 40 100 0.05 ppm/C 30 200 0.1 ppm/C 0.1 ppm/C 20 300 0.14 ppm/C 10 400 0.16 ppm/C 0.2 ppm/C 0 500 60 40 20 020406080 100 120 140 55 70 125 55 25 0 +25 +60 +75+100 +125 Ambient Temperature (C) Ambient Temperature (C) and TCR Chord Slopes for Different Temperature Ranges Figure 4 Trimming to Values Figure 5 Recommended Land Pattern Interloop capacitance Current path reduction before trimming in series 0.063 0.004 Mutual Current path after trimming inductance (1.6 0.1) reduction Trimming process due to change removes this material in current from shorting strip area direction changing current path and increasing resistance Foil shown in black, etched spaces in white Note 0.100 0.004 To acquire a precision resistance value, the Bulk Metal Foil (2.54 0.1) 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. www.vishayfoilresistors.com For any questions, contact 4153-EN 2 foil vpgsensors.com Rev 01-May-2020 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)