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 PR O DU CT INTRODUCTION The SMRxDZ is an ultra high precision molded surface 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 extremely low, this characteristic has been further refined over the years. The SMRxDZ utilizes ultra high precision Bulk Metal® Z-Foil. IM PR O VE D The Z-Foil technology provides a significant reduction of the resistive element’s sensitivity to ambient temperature variations (TCR) and to self heating when power is applied (power coefficient). Voltage division with tight tracking < 2 ppm/°C can be achieved with 2 randomly selected units even with a large ratio between the two values. APPLICATIONS Our Application Engineering Department is available to advise and make recommendations. For non-standard technical requirements and special applications, please contact us. • • • • • • TABLE 1 - TOLERANCE AND TCR VERSUS RESISTANCE VALUE (- 55 °C to + 125 °C, + 25 °C Ref.) • • • • VALUE STANDARD TOLERANCE1) TYPICAL TCR AND MAX. SPREAD1) (ppm/°C) 50 Ω to 80 kΩ ± 0.01 % ± 0.2 ± 1.8 20 Ω to < 50 Ω ± 0.02 % ± 0.2 ± 2.8 10 Ω to < 20 Ω ± 0.05 % ± 0.2 ± 4.8 5 Ω to < 10 Ω ± 0.1 % ± 0.2 ± 6.8 Note 1. Tighter performances are available Precision amplifiers High precision instrumentation Medical Automatic test equipment (ATE) Industrial Audio (High end stereo equipment) EB application Military, airborne and space Pulse application Measurement instrumentation R2 R1 Vin Vout + SMRXDZ FIGURE 1 - POWER DERATING CURVE 200 Percent of Rated Power (%) Any value at any tolerance available within resistance range • Temperature Coefficient of Resistance (TCR): ± 0.05 ppm/°C typical (0 °C to + 60 °C) Pb-free ± 0.2 ppm°C typical (- 55 °C to + 125 °C, Available + 25 °C Ref.) RoHS* • Tolerance: to ± 0.01 % COMPLIANT • Power Coefficient of Resistance (PCR) “ΔR 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 Expansions (TCE) • Electrostatic Discharge (ESD) above 25 000 Volts • Load Life Stability: ± 0.005 % (70 °C, 2000 hours at Rated Power) • Resistance Range: 5 Ω to 80 kΩ (for higher and lower values, please contact us) • Power Rating: to 600 mW at 70 °C • Non Inductive, Non Capacitive Design • Current Noise: - 40 dB • Voltage Coefficient: < 0.1 ppm/V • Non Inductive: < 0.08 • Non Hot Spot Design • Terminal Finishes available: Lead (Pb)-free Tin/Lead Alloy • Matched sets with TCR tracking are available upon request • For higher performances please contact us • Any value available within resistance range (e.g. 1K234) • Prototype samples available from 48 hours. For more information, please contact [email protected] - 55 °C + 70 °C 175 150 125 100 75 50 25 0 - 75 - 25 + 25 + 75 + 125 Ambient Temperature (°C) + 175 * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63118 Revision: 30-Jul-07 For any questions, contact: [email protected] www.vishay.com 1 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) TABLE 2 - PERFORMANCE SPECIFICATIONS TEST MAXIMUM LIMIT1) CONDITIONS SMR3DZ Resistance Range Rated Power 10 kΩ to 33 kΩ 5 Ω to 10 kΩ 0.250 W at 70 °C 0.160 W at 70 °C 0.125 W at 125 °C 0.08 W at 125 °C Maximum Working Voltage Maximum Operating Temperature Working Temperature Range Thermal Shock SMR1DZ SMR3DZ 5 Ω to 33 kΩ 5 Ω to 80 kΩ PR O DU CT SMR1DZ 5 Ω to 30 kΩ 0.6 W at 70 °C 0.3 W at 125 °C 30 kΩ to 80 kΩ 0.4 W at 70 °C 0.2 W at 125 °C See figure 1 73 V 180 V + 175 °C (See figure 1) - 55 °C to + 125 °C (MIL range) - 65 °C to + 175 °C; 30 minutes; 5 cycles ± 0.01 % (100 ppm) 6.25 x Rated Power; 5 seconds ± 0.01 % (100 ppm) - 65 °C, 24 hours (no load): 45 minutes at Rated Power ± 0.01 % (100 ppm) Atmospheric Pressure; AC 200 V; 1 minute ± 0.01 % (100 ppm) Insulation Resistance (MΩ) DC 100 V; 1 minute over 10 000 Resistance to Soldering Heat (%) 260 °C; 10 seconds ± 0.02 %, ± 0.01 % typical + 65 °C to - 10 °C; 90 % to 98 % RH; Rated Power; 240 hours ± 0.02 % (200 ppm) 100 G; Sawtooth ± 0.01 % (100 ppm) 10 ~ 2000 ~ 10 Hz; 20 G; X, Y, Z each 2.5 hours ± 0.01 % (100 ppm) Short Time Overload Low Temperature Operation IM PR O VE D Dielectric Withstanding Voltage Moisture Resistance Shock Vibration, High Frequency Load Life Stability (2000 h) High Temperature Exposure 0.04 W at + 70 °C 0.25 W at + 70 °C 0.125 W at + 125 °C 0.1 W at + 70 °C 0.6 W at + 70 °C 0.3 W at + 125 °C 175 °C; No Load 2000 hours Weight Packaging Typical 0.005 % 0.02 % 0.02 % Typical 0.005 % 0.015 % 0.015 % ± 0.05 % (500 ppm) 0.1143 g 0.244 g Bulk (loose) or Tape and Reel, per EIA-481-1 Note 1. As shown + 0.01 Ω to allow for measurement error at low values www.vishay.com 2 For any questions, contact: [email protected] Document Number: 63118 Revision: 30-Jul-07 SMR1DZ/SMR3DZ (Z-Foil) Ultra High Precision Z-Foil Molded Surface Mount Resistor with Vishay Foil Resistors 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) FIGURE 2 - DIMENSIONS in inches (millimeters) Side View L VALUE (5 DIGITS) Top View V End View Stand Off TOLERANCE 100R0T PR O DU CT TH Minimum Z-FOIL INDICATOR z - (DATE CODE) P P H W TW Bottom View LEAD (Pb)-FREE INDICATOR MODEL L W H P TW TH (minimum) SMR1DZ 0.236 ± 0.012 (5.99 ± 0.30) 0.126 ± 0.012 (3.20 ± 0.30) 0.098 ± 0.012 (2.49 ± 0.30) 0.051 ± 0.012 (1.30 ± 0.30) 0.087 ± 0.004 (2.21 ± 0.10) 0.039 (0.99) SMR3DZ 0.287 ± 0.012 (7.29 ± 0.30) 0.170 ± 0.012 (4.32 ± 0.30) 0.110 ± 0.012 (2.79 ± 0.30) 0.051 ± 0.012 (1.30 ± 0.30) 0.095 ± 0.004 (2.41 ± 0.10) 0.039 (0.99) FIGURE 3 - RECOMMENDED MOUNTING PAD GEOMETRIES in inches (millimeters) Reflow Solder Pads D C B E IM PR O VE D A MODEL METHOD A MIN. B REF C REF D ± 0.04 (± 1.02) E REF SMR1DZ Reflow 0.110 (2.79) 0.106 (2.69) 0.124 (3.15) 0.337 (8.55) 0.050 (1.27) SMR3DZ Reflow 0.118 (3.00) 0.106 (2.69) 0.175 (4.45) 0.388 (9.86) 0.050 (1.27) Per IPC-SM-782 Rev A FIGURE 4 - TRIMMING TO VALUES (Conceptual Illustration) Current Path Before Trimming Interloop Capacitance Reduction in Series Current Path After Trimming Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance Mutual Inductance Reduction due to Change in Current Direction FIGURE 5 - TYPICAL TCR CURVE Z-FOIL + 500 + 400 + 300 + 200 + 100 ΔR 0 R (ppm) - 100 0.05 ppm/°C - 200 - 0.1 ppm/°C - 300 0.1 ppm/°C 0.14 ppm/°C - 400 0.2 ppm/°C - 0.16 ppm/°C - 500 - 55 - 25 0 + 25 + 60 + 75 + 100 + 125 Ambient Temperature (°C) NOTE: Foil shown in black, etched spaces in white Document Number: 63118 Revision: 30-Jul-07 Notes • For more details, see table 1 • The TCR values for < 80 W are influenced by the termination composition and the result in deviation from this curve For any questions, contact: [email protected] www.vishay.com 3 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) TABLE 3 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y174510K0000T9R (preferred part number format) DENOTES PRECISION VALUE R=Ω K = kΩ 1 7 4 5 1 0 0 = Standard 9 = Lead (Pb)-free 1 - 999 = Custom PR O DU CT Y Y AER* K 0 0 0 0 T 9 R PRODUCT CODE RESISTANCE TOLERANCE PACKAGING 1745 = SMR1DZ 1746 = SMR3DZ T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.1 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % L = Bulk Pack R = Tape and Reel FOR EXAMPLE: ABOVE GLOBAL ORDER Y1745 10K0000 T 9 R: TYPE: SMR1DZ VALUE: 10.0 kΩ ABSOLUTE TOLERANCE: ± 0.01 % TERMINATION: Lead (Pb)-free PACKAGING: Tape and Reel HISTORICAL PART NUMBER: SMR1DZ 10K000 TCR0.2 T S T (will continue to be used) 10K000 TCR0.2 MODEL OHMIC VALUE TCR CHARACTERISTIC SMR1DZ SMR3DZ 10.0 kΩ IM PR O VE D SMR1DZ T S T RESISTANCE TOLERANCE TERMINATION PACKAGING S = Lead (Pb)-free B = Tin/Lead B = Bulk Pack T = Tape and Reel T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.1 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % Note * For non-standard requests, please contact Application Engineering. www.vishay.com 4 For any questions, contact: [email protected] Document Number: 63118 Revision: 30-Jul-07 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1