SMR1D

SMR1D/SMR3D Vishay Foil Resistors High Precision Bulk Metal® Foil Molded Surface Mount Resistor with TCR down to ± 2 ppm/°C, Flexible Terminations, and Load Life Stability of ± 0.005 % (50 ppm) FEATURES • Temperature coefficient of resistance (TCR): ± 2 ppm°C typical (- 55 °C to + 125 °C, Pb-free + 25 °C ref.) Available • Tolerance: to ± 0.01 % RoHS* • Flexible terminations ensure minimal stress COMPLIANT transference from the PCB due to a difference in thermal coefficient of expansions (TCE) • Electrostatic discharge (ESD) above 25 000 V • Load life stability: ± 0.005 % (70 °C, 2000 h 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 µH • Non hot spot design • Terminal finishes available: lead (Pb)-free tin/lead alloy • Matched sets with TCR tracking are available upon request • Any value available within resistance range (e.g. 1K234) • Prototype samples available from 48 h. For more information, please contact foil@vishay.com • For better performances please review SMRxDZ datasheet Any value at any tolerance available within resistance range INTRODUCTION The SMRxD is a 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. It utilizes the Bulk Metal® Foil technology for the resistive element with its inherent low and predictable TCR and long term stability. This surface mountable product affords similar performance to the time tested S series molded through-hole product. The flexible terminations of this product also reduce stress transference from the PCB to the resistor. Voltage division with tight tracking < 3 ppm/°C can be achieved with 2 randomly selected units even with a large ratio between the two values. Our Application Engineering Department is available to advise and make recommendations. For non-standard technical requirements and special applications, please contact us. APPLICATIONS • • • • • • • Military, airborne and space Precision amplifiers High precision instrumentation Medical Automatic test equipment (ATE) Industrial Audio (high end stereo Vin equipment) • EB application • Pulse application • Measurement instrumentation TABLE 1 - THE SMRxD SERIES IS LISTED IN THE FOLLOWING DSCC SPECIFICATIONS MODEL SMR1D SMR3D DSCC 06020 06021 MIL SPEC MIL-PRF-55182 MIL-PRF-55182 R2 R1 + Vout SMRxD TABLE 2 - TOLERANCE AND TCR VERSUS RESISTANCE VALUE (- 55 °C to + 125 °C, + 25 °C Ref.) VALUE 50 Ω to 80 kΩ 20 Ω to < 50 Ω 10 Ω to < 20 Ω 5 Ω to < 10 Ω STANDARD TOLERANCE1) ± 0.01 % ± 0.02 % ± 0.05 % ± 0.1 % TYPICAL TCR AND MAX. SPREAD1) (ppm/°C) ±2±3 ±2±4 ±2±6 ±2±8 FIGURE 1 - POWER DERATING CURVE 200 Percent of Rated Power (%) 175 150 125 100 75 50 25 0 - 75 - 25 + 25 + 75 + 125 Ambient Temperature (°C) + 175 - 55 °C + 70 °C Note 1. Tighter performances are available * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63102 Revision: 14-Nov-07 For any questions, contact: foil@vishay.com www.vishay.com 1 SMR1D/SMR3D Vishay Foil Resistors High Precision Bulk Metal® Foil Molded Surface Mount Resistor with TCR down to ± 2 ppm/°C, Flexible Terminations, and Load Life Stability of ± 0.005 % (50 ppm) TABLE 3 - PERFORMANCE SPECIFICATIONS TEST SMR1D Resistance Range 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 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 CONDITIONS SMR3D MAXIMUM LIMIT1) SMR1D 5 Ω to 33 kΩ SMR3D 5 Ω to 80 kΩ Rated Power see figure 1 Maximum Working Voltage Maximum Operating Temperature Working Temperature Range Thermal Shock Short Time Overload Low Temperature Storage Low Temperature Operation Dielectric Withstanding Voltage Insulation Resistance (MΩ) Resistance to Soldering Heat (%) Moisture Resistance Shock Vibration, High Frequency + 175 °C (see figure 1) - 55 °C to + 125 °C (MIL range) - 65 °C to + 150 °C; 30 min; 5 cycles 6.25 x rated power; 5 s 24 h at - 65 °C 45 min, rated power at - 65 °C atmospheric pressure; AC 200 V; 1 min DC 100 V; 1 min 260 °C; 10 s + 65 °C to - 10 °C; 90 % to 98 % RH; rated power; 240 h 100 G; sawtooth 10 ~ 2000 ~ 10 Hz; 20 G; Y, Z each 4 h 73 V 180 V ± 0.01 % (100 ppm) ± 0.01 % (100 ppm) ± 0.01 % (100 ppm) ± 0.01 % (100 ppm) ± 0.01 % (100 ppm) over 10 000 ± 0.02 %, ± 0.01 % typical ± 0.02 % (200 ppm) ± 0.01 % (100 ppm) ± 0.01 % (100 ppm) Typical 0.005 % 0.02 % 0.02 % Typical 0.005 % 0.015 % 0.015 % Load Life Stability (2000 h) 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 High Temperature Exposure Weight Packaging 175 °C; no load 2000 h ± 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: foil@vishay.com Document Number: 63102 Revision: 14-Nov-07 SMR1D/SMR3D High Precision Bulk Metal® Foil Molded Surface Mount Vishay Foil Resistors Resistor with TCR down to ± 2 ppm/°C, Flexible Terminations, and Load Life Stability of ± 0.005 % (50 ppm) FIGURE 2 - DIMENSIONS in inches (millimeters) Side View L TH Minimum VALUE (5 DIGITS) Top View TOLERANCE Stand Off P P End View H 100R0T V (DATE CODE) - W LEAD (Pb)-FREE INDICATOR Bottom View TW MODEL SMR1D SMR3D L 0.236 ± 0.012 (5.99 ± 0.30) 0.287 ± 0.012 (7.29 ± 0.30) W 0.126 ± 0.012 (3.20 ± 0.30) 0.170 ± 0.012 (4.32 ± 0.30) H 0.098 ± 0.012 (2.49 ± 0.30) 0.110 ± 0.012 (2.79 ± 0.30) P 0.051 ± 0.012 (1.30 ± 0.30) 0.051 ± 0.012 (1.30 ± 0.30) TW 0.087 ± 0.004 (2.21 ± 0.10) 0.095 ± 0.004 (2.41 ± 0.10) TH (minimum) 0.039 (0.99) 0.039 (0.99) FIGURE 3 - RECOMMENDED MOUNTING PAD GEOMETRIES in inches (millimeters) Reflow Solder Pads D C B E A MODEL SMR1D SMR3D Per IPC-SM-782 Rev. A METHOD Reflow Reflow A MIN. 0.110 (2.79) 0.118 (3.00) B REF 0.106 (2.69) 0.106 (2.69) C REF 0.124 (3.15) 0.175 (4.45) D ± 0.04 (± 1.02) 0.337 (8.55) 0.388 (9.86) E REF 0.050 (1.27) 0.050 (1.27) FIGURE 4 - TRIMMING TO VALUES (Conceptual Illustration) FIGURE 5 - TYPICAL TCR CURVE (For more details, see table 2) + 150 + 100 Interloop Capacitance Reduction in Series Current Path Before Trimming Current Path After Trimming Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance ΔR R (ppm) + 50 0 - 50 Mutual Inductance Reduction due to Change in Current Direction - 100 - 150 - 200 - 50 - 55 - 25 0 + 25 + 50 + 75 + 100 + 125 ± 2 ppm/°C (+ 25 °C Reference) NOTE: Foil shown in black, etched spaces in white Ambient Temperature (°C) Note: The TCR values for < 80 Ω are influenced by the termination composition and the result in deviation from this curve Document Number: 63102 Revision: 14-Nov-07 For any questions, contact: foil@vishay.com www.vishay.com 3 SMR1D/SMR3D Vishay Foil Resistors High Precision Bulk Metal® Foil Molded Surface Mount Resistor with TCR down to ± 2 ppm/°C, Flexible Terminations, and Load Life Stability of ± 0.005 % (50 ppm) TABLE 4 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y112110K0000T9R (preferred part number format) DENOTES PRECISION Y VALUE R=Ω K = kΩ AER* 0 = standard 9 = lead (Pb)-free 1 - 999 = Custom Y 1 1 2 1 1 0 K 0 0 0 0 T 9 R PRODUCT CODE 1121 = SMR1D 1169 = SMR3D RESISTANCE TOLERANCE T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.1 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % PACKAGING L = bulk pack R = tape and reel FOR EXAMPLE: ABOVE GLOBAL ORDER Y1121 10K0000 T 9 R: TYPE: SMR1D VALUE: 10.0 kΩ ABSOLUTE TOLERANCE: ± 0.01 % TERMINATION: lead (Pb)-free PACKAGING: tape and reel HISTORICAL PART NUMBER: SMR1D 10K000 TCR2 T S T (will continue to be used) SMR1D MODEL SMR1D SMR3D 10K000 OHMIC VALUE 10.0 kΩ TCR2 TCR CHARACTERISTIC T RESISTANCE TOLERANCE T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.1 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % S TERMINATION S = lead (Pb)-free B = tin/lead T PACKAGING B = bulk pack T = tape and reel Note * For non-standard requests, please contact application engineering. www.vishay.com 4 For any questions, contact: foil@vishay.com Document Number: 63102 Revision: 14-Nov-07 Legal Disclaimer Notice Vishay Notice Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale. Document Number: 91000 Revision: 08-Apr-05 www.vishay.com 1