SMR1D Vishay Foil Resistors SURFACE MOUNT Bulk Metal® Foil Technology Precision Molded Surface Mount Resistor FEATURES • Small footprint • Temperature Coefficient of Resistance — Nominal TCR: + 0.6 ppm/°C (0°C to + 25°C); - 0.6ppm/°C (+ 25°C to + 60°C) + 2.2ppm/°C (- 55°C to + 25°C) - 1.8ppm/°C (+ 25°C to + 125°C) Product may not be to scale • Value Range: 5Ω to 33KΩ The SMR1D is a truly precision molded surface mountable resistor offering all the elements of precision; including lowest TCR, tight tolerances, 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 and legendary low predictable TCR* and long term stability. This surface mountable product affords similar performance to the time tested S102 molded through-hole product. Voltage division with tight tracking < 3ppm can be achieved with 2 randomly selected units even with a large ratio between the two values. The molded SMR1D, while slightly larger and heavier than the Bulk Metal® Foil VSM surface mountable chip resistor, has a rugged construction capable of withstanding significant thermal cycling and allows for board installation without concern for tolerance shifts due to manufacturing processes or mechanical stresses. *Reference Reason 1 in “7 Technical Reasons to Specify BMF Resistors.” • Tight Tolerances available to ± 0.01 percent • Power: 0.25 watts @ + 70°C • Excellent Long Term Stability: ± 0.02% maximum • Low Thermal EMF: 0.1 m V/°C maximum • Low Noise, High Frequency Operation • Matched Sets Available TABLE 1 - TOLERANCE VERSUS RESISTANCE VALUE VALUE (Ω) STANDARD TOLERANCE (%) 100Ω to 33KΩ ± 0.01% 20Ω to < 100Ω ± 0.02% 10Ω to < 20Ω ± 0.05% 5Ω to < 10Ω ± 0.10% FIGURE 2 - POWER DERATING CURVE FIGURE 1 - NOMINAL TCR –50 –25 0 +25 +50 +75 +100 +400 +300 +125 m -5 +5 pp m +200 pp Nominal Resistance/ Temperature (RT) Curve +100 ∆R R (ppm) 0 Maximum Spread ±2.3 ppm/°C –100 –200 –300 –400 +2.2 ppm/°C Nominal Chord Slope (TCR) –1.8 ppm/°C Nominal Chord Slope (TCR) –500 –55°C / +25°C / +125°C are the test points with +25°C as the reference temperature VISHAY FOIL • FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 • GERMANY +49.9287.710 FAX: +49 9287.70435 • ISRAEL +972.3.557.0945 FAX: +972.3.558.9121 www.vishay.com 18 Standard Spread ±2.0 ppm/°C Percent of Rated Power @ +125°C –55 +500 200% –55°C +70°C 175% 150% 125% 100% 75% 50% 25% 0 –50 –25 0 +25 +50 +75 +100 +125 +150 +175 +200 Ambient Temperature (°C) • ITALY + 39.2.300.11919 FAX: +39.2.300.11999 • JAPAN +81.3.5464.6411 FAX: +81.3.5464.6433 • SINGAPORE +65.788.6668 FAX: +65.788.0988 • SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 • UK +44 191 514 8237 FAX: +44 1953 457 722 • USA +1 610 407-4800 FAX: +1 610 640-9081 Document Number: 63022 Revision 23-Dec-03 SMR1D ® Bulk Metal Foil Technology Surface Mount Precision Resistor Vishay Foil Resistors SURFACE MOUNT TABLE 2 - MODEL SMR1D SPECIFICATIONS TEST CONDITIONS MAXIMUM LIMIT Resistance Range TCR 5Ω to 33KΩ 0°C to + 25°C + 25°C to + 60°C See Figures 1 – 55 to + 25°C + 25°C to + 125°C Rated Power 0.250 watts @ 70°C See Figure 2, previous page 0.125 watts @ 125°C Maximum Working Voltage 54 volts Maximum Operating Temperature + 125°C Working Temperature Range – 65 to + 125°C Thermal Shock – 65°C to + 175°C; 30 minutes.; 5 cycles ± 0.01% Overload 2.5 x Rated Voltage; 5 Seconds ± 0.01% Low Temperature Operation – 65°C; 45 minutes @ Rated Power ± 0.01% Dielectric Withstanding Voltage Atmospheric Pressure; AC 200 V; 1 minute ± 0.01% Insulation Resistance (M Ω) DC 100 V; 1 minute over 10,000 Resistance to Soldering Heat (%) 260°C; 10 seconds ± 0.03%, ± 0.01% Typical Moisture Resistance + 65°C to – 10°C; 90 to 98% RH; Rated Power; 240 hours ± 0.05% Shock 100 G; Sawtooth ± 0.01% Vibration, High Frequency 10~ 2,000~ 10 Hz; 20 G; X, Y, Z each 2.5 hours ± 0.01% Load Life Stability 0.125 watts @ 125°C 2,000 hours. ± 0.02% Order of Magnitude better 0.25 watts @ 70°C 2,000 hours. ± 0.02% than Thin Film Technology 0.04 watts @ 70°C 2,000 hours. ± 0.005% High Temperature Exposure + 175°C; No Load 2,000 hours ± 0.05% Shelf Life 15 to 35°C; 15 to 75% RH; No Load; 10,000 hours ± 0.0025% (1 year) ± 0.005% (3 years) Weight Packaging 0.1143 grams Bulk (Loose) or Tape & Reel, per EIA-481-1 VISHAY FOIL • FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 • GERMANY +49.9287.710 FAX: +49 9287.70435 • ISRAEL +972.3.557.0945 FAX: +972.3.558.9121 Document Number: 63022 Revision 23-Dec-03 • ITALY + 39.2.300.11919 FAX: +39.2.300.11999 • JAPAN +81.3.5464.6411 FAX: +81.3.5464.6433 • SINGAPORE +65.788.6668 FAX: +65.788.0988 • SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 • UK +44 191 514 8237 FAX: +44 1953 457 722 • USA +1 610 407-4800 FAX: +1 610 640-9081 www.vishay.com 19 SMR1D Bulk Metal® Foil Technology Surface Mount Precision Resistor SURFACE MOUNT Vishay Foil Resistors FIGURE 3 - MODEL SMR1D DIMENSIONS in inches (millimeters) Side View L TH Minimum Stand Off End View P Top View P H 80K00T 100R0T W (DATE CODE) V TW Bottom View MODEL L W H P TW TH (MINIMUM) SMR1D 0.236 ± 0.012 (6.0 ± 0.30) 0.126 ± 0.012 (3.2 ± 0.30) 0.098 ± 0.012 (2.5 ± 0.30) 0.051 ± 0.012 (1.3 ± 0.30) 0.087 ± 0.004 (2.2 ± 0.10) 0.039 (1.0) FIGURE 4 - RECOMMENDED MOUNTING PAD GEOMETRIES in inches (millimeters) B Wave Solder Pads D C Reflow Solder Pads D C B A A METHOD Wave E E A MINIMUM B REF C REF ± 0.04 (± 1.0) D E REF 0.061 (1.55) 0.106 (2.70) 0.124 (3.15) 0.337 (8.55) 0.050 (1.28) METHOD Reflow A MINIMUM B REF C REF ± 0.04 (± 1.0) D E REF 0.110 (2.79) 0.106 (2.70) 0.124 (3.15) 0.337 (8.55) 0.050 (1.28) Per IPC-SM-782 Rev A TABLE 3 - ORDERING INFORMATION RESISTANCE VALUE MODEL RESISTANCE RANGE LETTER DESIGNATOR MULTIPLIER FACTOR SMR1D 5Ω to < 1KΩ Example: 249R00 - 249Ω R x 1.0 33KΩ Example: 33K000 = 33.0KΩ K x 103 VISHAY FOIL • FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 • GERMANY +49.9287.710 FAX: +49 9287.70435 • ISRAEL +972.3.557.0945 FAX: +972.3.558.9121 www.vishay.com 20 • ITALY + 39.2.300.11919 FAX: +39.2.300.11999 • JAPAN +81.3.5464.6411 FAX: +81.3.5464.6433 • SINGAPORE +65.788.6668 FAX: +65.788.0988 TOLERANCE PACKAGING T = ± 0.01% Q = ± 0.02% A = ± 0.05% B = ± 0.1% C = ± 0.25% D = ± 0.5% F = ± 1.0% T = Tape and Reel B = Bulk Pack • SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 • UK +44 191 514 8237 FAX: +44 1953 457 722 • USA +1 610 407-4800 FAX: +1 610 640-9081 Document Number: 63022 Revision 23-Dec-03