SMR1DZ/SMR3DZ (Z-Foil) Vishay Foil Resistors Ultra High Precision Z-Foil Molded Surface Mount Resistor with TCR down to 0.05 ppm/C, PCR of 5 ppm at Rated Power, Flexible Terminations, and Load Life Stability of 0.005 % (50 ppm) FEATURES Temperature Coefficient of Resistance (TCR): 0.05 ppm/C typical (0 C to + 60 C) 0.2 ppmC typical (- 55 C to + 125 C, + 25 C Ref.) Tolerance: to 0.01 % Power Coefficient of Resistance (PCR) Any value at any tolerance available within resistance range R due to self heating: 5 ppm at Rated Power Flexible Terminations ensure minimal stress transference from the PCB due to a difference in Thermal Coefficient of INTRODUCTION Expansions (TCE) Electrostatic Discharge (ESD) above 25 000 Volts The SMRxDZ is an ultra high precision molded surface Load Life Stability: 0.005 % (70 C, 2000 hours at Rated mountable resistor offering all the elements of precision Power) including low TCR, tight tolerance, long term stability, low Resistance Range: 5 to 80 k (for higher and lower noise, low thermal EMF, and non-measurable voltage values, please contact us) coefficient. One of the important parameters influencing Power Rating: to 600 mW at 70 C Non Inductive, Non Capacitive Design stability is the Temperature Coefficient of Resistance (TCR). Current Noise: - 40 dB Although the TCR of foil resistors is considered extremely Voltage Coefficient: < 0.1 ppm/V low, this characteristic has been further refined over the Non Inductive: < 0.08 years. The SMRxDZ utilizes ultra high precision Bulk Metal Non Hot Spot Design Z-Foil. Terminal Finishes available: Lead (Pb)-free Tin/Lead Alloy The Z-Foil technology provides a significant reduction of Matched sets with TCR tracking are available upon request the resistive elements sensitivity to ambient temperature For higher Performances please contact us variations (TCR) and to self heating when power is applied Any Value available within Resistance Range (e.g. 1K234) (power coefficient). Prototype Samples available from 48 hours. For more Information, please contact foil vishaypg.com Voltage division with tight tracking < 2 ppm/C can be APPLICATIONS achieved with 2 randomly selected units even with a large Precision Amplifiers ratio between the two values. High Precision Instrumentation R 2 Our Application Engineering Department is available to Medical advise and make recommendations. For non-standard Automatic Test Equipment (ATE) R 1 technical requirements and special applications, please Industrial V - in V contact us. Audio (High End Stereo out + Equipment) EB Application SMRxDZ TABLE 1 - TOLERANCE AND TCR VERSUS Military, Airborne and Space RESISTANCE VALUE Pulse Application (- 55 C to + 125 C, + 25 C Ref.) Measurement Instrumentation TYPICAL TCR AND FIGURE 1 - POWER DERATING CURVE STANDARD 1) VALUE MAX. SPREAD 1) TOLERANCE (ppm/C) - 55 C + 70 C 200 50 to 80 k 0.01 % 0.2 1.8 175 150 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 50 1. Tighter performances are available 25 0 - 75 - 25 + 25 + 75 + 125 + 175 Ambient Temperature (C) * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63118 For any questions, contact: foil vishaypg.com www.foilresistors.com Revision: 25-Mar-10 1 IMPROVED PRODUCT Percent of Rated Power (%)SMR1DZ/SMR3DZ (Z-Foil) Vishay Foil Resistors TABLE 2 - PERFORMANCE SPECIFICATIONS 1) TEST CONDITIONS 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 70 C 0.160 W at 70 C 0.6 W at 70 C 0.4 W at 70 C See figure 1 0.125 W at 125 C 0.08 W at 125 C 0.3 W at 125 C 0.2 W at 125 C Maximum Working Voltage 73 V 180 V Maximum Operating + 175 C (see Figure 1) Temperature Working Temperature Range - 55 C to + 125 C (MIL range) Thermal Shock - 65 C to + 175 C 30 minutes 5 cycles 0.01 % (100 ppm) Short Time Overload 6.25 x Rated Power 5 seconds 0.01 % (100 ppm) Low Temperature Operation - 65 C, 24 hours (no load): 45 minutes at Rated Power 0.01 % (100 ppm) Dielectric Withstanding Atmospheric Pressure AC 200 V 1 minute 0.01 % (100 ppm) Voltage Insulation Resistance (M) DC 100 V 1 minute over 10 000 Resistance to 260 C 10 seconds 0.02 %, 0.01 % typical Soldering Heat (%) Moisture Resistance + 65 C to - 10 C 90 % to 98 % RH Rated Power 240 hours 0.02 % (200 ppm) Shock 100 G Sawtooth 0.01 % (100 ppm) Vibration, High Frequency 10 ~ 2000 ~ 10 Hz 20 G X, Y, Z each 2.5 hours 0.01 % (100 ppm) Typical Typical 0.04 W at + 70 C 0.1 W at + 70 C 0.005 % 0.005 % Load Life Stability (2000 h) 0.25 W at + 70 C 0.6 W at + 70 C 0.02 % 0.015 % 0.125 W at + 125 C 0.3 W at + 125 C 0.02 % 0.015 % High Temperature Exposure 175 C no Load 2000 hours 0.05 % (500 ppm) Weight 0.1143 g 0.244 g Packaging Bulk (loose) or Tape and Reel, per EIA-481-1 Note 1. As shown + 0.01 to allow for measurement error at low values www.foilresistors.com For any questions, contact: foil vishaypg.com Document Number: 63118 2 Revision: 25-Mar-10 IMPROVED PRODUCT