SMR3D Vishay Foil Resistors SURFACE MOUNT Bulk Metal® Foil Technology Precision Molded Surface Mount Resistor FEATURES Product may not be to scale The SMR3D 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 2 values. The molded SMR3D, 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 BULK METAL® FOIL Resistors.” FIGURE 1 - NOMINAL TCR –25 0 +25 +50 +75 +100 +400 +300 -5 +5 pp m +200 pp +125 m 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) VALUE (Ω) STANDARD TOLERANCE (%) 100Ω to 80kΩ ± 0.01 20Ω to < 100Ω ± 0.02 10Ω to 20Ω ± 0.05 5Ω to 10Ω ± 0.10 –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 Standard Spread ±2.0 ppm/°C Percent of Rated Power @ +125°C –50 TABLE 1 - TOLERANCE VERSUS RESISTANCE VALUE FIGURE 2 - POWER DERATING CURVE –55 +500 • Performance Similar to Time Tested S102 Through Hole Resistor • Temperature Coefficient of Resistance — Nominal TCR: + 0.6ppm/°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) • Value Range: 5Ω to 80KΩ • Tight Tolerances: available to ± 0.01 percent • Power: 0.6 watts @ + 70°C • Excellent Long Term Stability: ± 0.015% • Low Thermal EMF: 0.1µV/°C maximum • Low Noise, High Frequency Operation • Matched Sets Available • Terminal Finishes Available: Lead (Pb)-free (Sn 100%) Tin/Lead Alloy (Sn 60% Pb 40%) 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) SALES • ISRAEL: [email protected] • FRANCE/SWITZERLAND/SOUTHERN EUROPE: [email protected] • AMERICAS: [email protected] • ASIA/JAPAN: [email protected] • UK/HOLLAND/SCANDANAVIA: [email protected] • GERMANY/CZECH REPUBLIC/AUSTRIA: [email protected] www.vishay.com 20 For technical questions in the Americas, contact [email protected] Document Number: 63021 For technical questions in Asia/Japan/Europe/Africa/Israel, contact [email protected] Revision 16-Aug-04 SMR3D ® Bulk Metal Foil Technology Vishay Foil Resistors Precision Molded Surface Mount Resistor SURFACE MOUNT TABLE 2 - MODEL SMR3D SPECIFICATIONS TEST CONDITIONS MAXIMUM LIMIT Resistance Range TCR 5Ω to 80KΩ 0°C to + 25°C + 25°C to + 60°C See Figure 1 – 55 to + 25°C + 25°C to + 125°C Rated Power 5Ω to 30K above 30K 0.6 watts @ 70°C 0.4 watts 0.3 watts @ 125°C 0.2 watts Maximum Working Voltage See Figure 2, Previous page 300 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 (MΩ) 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 0.3 watts @ + 125°C 2,000 hours ± 0.015% Order of Magnitude better 0.6 watts @ + 70°C 2,000 hours ± 0.015% than Thin Film Technology 0.1 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 0.244 Grams Bulk (Loose) or Tape & Reel, per EIA-481-1 SALES • ISRAEL: [email protected] • FRANCE/SWITZERLAND/SOUTHERN EUROPE: [email protected] • AMERICAS: [email protected] • ASIA/JAPAN: [email protected] • UK/HOLLAND/SCANDANAVIA: [email protected] • GERMANY/CZECH REPUBLIC/AUSTRIA: [email protected] For technical questions in the Americas, contact [email protected] Document Number: 63021 For technical questions in Asia/Japan/Europe/Africa/Israel, contact [email protected] Revision 16-Aug-04 www.vishay.com 21 SMR3D Bulk Metal® Foil Technology Precision Molded Surface Mount Resistor SURFACE MOUNT Vishay Foil Resistors FIGURE 3 - MODEL SMR3D DIMENSIONS in inches (millimeters) Side View L TH Minimum Stand Off End View P Top View P H 80K00T80 (DATE CODE) W V TW Bottom View MODEL L W H P TW TH (MINIMUM) SMR3D 0.287 ± 0.012 (7.3 ± 0.30) 0.170 ± 0.012 (4.3 ± 0.30) 0.110 ± 0.012 (2.8 ± 0.30) 0.051 ± 0.012 (1.3 ± 0.30) 0.095 ± 0.004 (2.4 ± 0.10) 0.039 (1.0) FIGURE 4 - RECOMMENDED MOUNTING PAD GEOMETRIES in inches (millimeters) Wave Solder Pads D C B Reflow Solder Pads D C B E E A METHOD Wave A B MINIMUM REF 0.066 0.106 (1.68) (2.70) A C D REF 0.175 (4.45) ± 0.04 (± 1.0) E 0.388 (9.85) METHOD REF 0.050 Reflow (1.28) Per IPC-SM-782 Rev A A B C D E MINIMUM 0.118 (3.00) REF 0.106 (2.70) REF 0.175 (4.45) ± 0.04 (± 1.0) REF 0.050 (1.28) 0.388 (9.85) TABLE 2 - ORDERING INFORMATION MODEL RESISTANCE RANGE RESISTANCE VALUE LETTER MULTIPLIER DESIGNATOR FACTOR SMRC3D 5Ω to <1KΩ Example: 249R00 - 249Ω R x 1.0 1K to 80KΩ Example: 80K000 = 80KΩ K x 103 TOLERANCE TERMINATION PACKAGING T = ± 0.01% Q = ± 0.02% A = ± 0.05% B = ± 0.1% C = ± 0.25% D = ± 0.5% F = ± 1.0% S - Lead (Pb)-free B - Tin/Lead T = Tape and Reel B = Bulk Pack SALES • ISRAEL: [email protected] • FRANCE/SWITZERLAND/SOUTHERN EUROPE: [email protected] • AMERICAS: [email protected] • ASIA/JAPAN: [email protected] • UK/HOLLAND/SCANDANAVIA: [email protected] • GERMANY/CZECH REPUBLIC/AUSTRIA: [email protected] www.vishay.com 22 For technical questions in the Americas, contact [email protected] Document Number: 63021 For technical questions in Asia/Japan/Europe/Africa/Israel, contact [email protected] Revision 16-Aug-04