SMR1DZSMR1DZ // SMR3DZ SMR3DZ (Z-Foil)(Z-Foil) Ultra High PrUltra High Precision Z-Foil Molded Surface Mount Resistorecision Z-Foil Molded Surface Mount Resistor with TCR down to 0.2 ppm/C, PCR of 5 ppm at Rated Power, Flexible Terminations, and Load-Life Stability of 0.005 % (50 ppm) FEATURES AND BENEFITS Temperature coefficient of resistance (TCR): 0.2 ppm/C typical (55C to +125C, +25C ref.) Tolerance: to 0.01% Power coefficient of resistance (PCR) R due to self heatin: 5 ppm at rated power Any value at any tolerance available within resistance range Flexible Terminations ensure minimal stress transference from the PCB due to a difference in R 2 thermal coefficient of expansions (TCE) Electrostatic discharge (ESD): at least to 25 kV R 1 Load-life stability: 0.005% (70C, 2000 h) V - in V out + Resistance range: 5 to 80 k (for higher and lower values, please contact us) SMRxDZ Power rating: to 600 mW at +70C Non-inductive, non-capacitive design APPLICATIONS Current noise: 40 dB Precision amplifiers Audio (high end stereo Voltage coefficient: <0.1 ppm/V equipment) High precision Non-inductive: <0.08 instrumentation EB application Non hot spot design Medical Military, airborne and Terminal finishes available: lead (Pb)-free, tin/lead alloy space Automatic test Matched sets with TCR tacking are available upon equipment (ATE) Pulse application request Industrial Measurement For higher performances, please contact us instrumentation Any value available within Resistance Range (e.g., 1K234) INTRODUCTION For prototype samples, please contact The SMRxDZ is an ultra high precision molded surface foil vpgsensors.com mountable resistor offering all the elements of precision including low TCR, tight tolerance, long term stability, low noise, low thermal EMF, and non-measurable voltage coefficient. One of the important parameters influencing stability is the Temperature Coefficient of Resistance (TCR). Although the TCR of foil resistors is considered Table 1Tolerance and TCR vs. Resistance Figure 1Power Derating Curve Value (55C to +125C, +25C Ref.) 55 C + 70 C 200 Standard Typical TCR and Value (1) (1) Tolerance Max. Spread 175 () (%) (ppm/C) 150 50 to 80 k 0.01% 0.2 1.8 20 to <50 0.02% 0.2 2.8 125 10 to <20 0.05% 0.2 4.8 100 5 to <10 0.1% 0.2 6.8 75 Note (1) For values <5 and tighter performance, contact us. 50 Note 25 * This datasheet provides information about parts that are 0 RoHS-compliant and/or parts that are non-RoHS-compliant. 7525 +25+75 +125 +175 For example, parts with lead (Pb) terminations are not RoHS Ambient Temperature (C) compliant. Please see the information/tables in this datasheet for details. 4151-EN4151-EN For any questions, contact www.vishayfoilresistors.com Rev 13-Aug-2020Rev 13-Aug-2020 foil vpgsensors.com 1 Percent of Rated Power (%)SMR1DZ / SMR3DZ (Z-Foil) extremely low, this characteristic has been further refined Voltage division with tight tracking <2 ppm/C can be over the years. The SMRxDZ utilizes ultra high precision achieved with two randomly selected units even with a Bulk Metal Z-Foil. large ratio between the two values. The Z-Foil technology provides a significant reduction of Our Application Engineering Department is available to the resistive elements sensitivity to ambient temperature advise and make recommendations. For non-standard variations (TCR) and to self heating when power is applied technical requirements and special applications, please (power coefficient). contact us. Table 2Performance Specifications (1) Parameters Specifications Maximum Limit SMR1DZ SMR3DZ SMR1DZ SMR3DZ Resistance Range 5 to 33 k 5 to 80 k 5 to <10 k 10 k to 33 k 5 to <30 k 30 k to 80 k Rated Power 0.250 W at 70C 0.160 W at 70C 0.6 W at 70C 0.4 W at 70C See Figure 1 0.125 W at 125C 0.08 W at 125C 0.3 W at 125C 0.2 W at 125C Weight 0.1143 g 0.244 g Packaging Bulk (loose) or tape and reel, per EIA-481-1 (1) Test Conditions Maximum Limit Max. Working Voltage 73 V 180 V Max. Operating +175C (see Figure 1) Temperature Working Temperature 55C to +125C (MIL range) Range R >100 : 0.02% (200 ppm) ThermalShock 65C to +150C 30 min 5 cycles R 100 : 0.03% (300 ppm) Short Time Overload 6.25 x rated power 5 s 0.01% (100 ppm) Low Temperature 65C, 24 h (no load): 45 min at rated power 0.01% (100 ppm) Operation Dielectric Withstanding Atmospheric pressure AC 200 V 1 min 0.01% (100 ppm) Voltage Insulation Resistance DC 100 V 1 min over 10 000 M Resistanceto 260C for 10 s 0.03% SolderingHeat Moisture Resistance +65C to 10C 90% to 98% RH rated power 240 h 0.03% (300 ppm) Shock 100 G Sawtooth 0.01% (100 ppm) Vibration, High Frequency 10~2000~10 Hz 20 G X, Y, Z each 2.5 h 0.01% (100 ppm) Typical Typical 0.04 W at +70C 0.1 W at +70C Load-Life Stability 0.005% 0.005% 0.25 W at +70C 0.6 W at +70C (2000 h) 0.02% 0.015% 0.125 W at +125C 0.3 W at +125C 0.05% max 0.05% max High Temperature 175C no load 2000 h 0.1% (1000 ppm) Exposure Note (1) As shown +0.01 to allow for measurement errors at low values. www.vishayfoilresistors.com For any questions, contact 4151-EN 2 foil vpgsensors.com Rev 13-Aug-2020