SMR3D Datasheet | Vishay

FEATURES - 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%) 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.” TABLE 1 - TOLERANCE VERSUS RESISTANCE VALUE VALUE (Ω) 100Ω to 80kΩ 20Ω to < 100Ω 10Ω to 20Ω 5Ω to 10Ω STANDARD TOLERANCE (%) ± 0.01 ± 0.02 ± 0.05 ± 0.10 FIGURE 1 - NOMINAL TCR FIGURE 2 - POWER DERATING CURVE - 50 +500 +400 +300 +200 +100 - 25 +25 +50 +75 +100 +125 Percent of Rated Power @ +125°C - 55 200% 175% 150% 125% 100% 75% 50% 25%...