SM www.vishay.com Vishay Huntington Wirewound Resistors, Precision Power, Surface Mount FEATURES All welded construction Molded encapsulation Wraparound terminations Excellent stability at different environmental conditions High power ratings (up to 4 W) Available in non-inductive styles (NI SPECIAL) with Ayrton-Perry winding (Resistance max. value is one half standard value) Material categorization: for definitions of compliance please see www.vishay.com/doc 99912 STANDARD ELECTRICAL SPECIFICATIONS POWER RATING RESISTANCE GLOBAL HISTORICAL TOLERANCE WEIGHT (TYPICAL) P RANGE 70 C MODEL MODEL % g/1000 PIECES W SM-1 SM1 0.5 0.1 to 400 0.1, 0.25, 0.5, 1, 5 45 SM-2 SM2 1 0.1 to 3K 0.1, 0.25, 0.5, 1, 5 230 SM-3 SM3 3 0.1 to 25K 0.1, 0.25, 0.5, 1, 5 1360 SM-4 SM4 2 0.1 to 15K 0.1, 0.25, 0.5, 1, 5 680 SM-5 SM5 4 0.1 to 50K 0.1, 0.25, 0.5, 1, 5 2040 TECHNICAL SPECIFICATIONS PARAMETER UNIT SM RESISTOR CHARACTERISTICS Temperature Coefficient ppm/C 20 > 10 , 50 1 to 10 , contact factory for 0.99 and below Dielectric Withstanding Voltage V 1000 AC Operating Temperature Range C -55 to +275 1/2 Maximum Working Voltage V (P x R) GLOBAL PART NUMBER INFORMATION Global Part Numbering example: SM-2R4000FE6 (visit www.vishay.net SAP parts manual for all options) E 6 S M- 2 R 4 0 0 0F GLOBAL MODEL VALUE TOLERANCE PACKAGING CODE SPECIAL (4 digits) (5 digits) (1 digit) (2 digits) (up to 3 digits) SM-1 R = Decimal B = 0.1 % E6 = lead (Pb)-free, (Dash Number) K = Thousand C= 0.25 % 7 tape and reel pack From 1 to 999 SM-2 1R500 = 1.5 E7 = lead (Pb)-free, as applicable D = 0.5 % SM-3 4K000 = 4 k 13 tape and reel pack NI = Non-inductive F = 1 % SM-4 J = 5% SM-5 Historical Part Number example: SM2-0.4-1% SM2 0.4 1 % HISTORICAL MODEL RESISTANCE VALUE TOLERANCE Revision: 06-Apr-18 Document Number: 31812 1 For technical questions, contact: ww2bresistors vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc 91000 SM www.vishay.com Vishay Huntington DIMENSIONS in inches millimeters T L c + W b a HW 1 DIMENSIONS in inches millimeters SOLDER PAD DIMENSIONS GLOBAL L 0.015 W 0.015 H 0.015 W1 0.015 T 0.015 a 0.015 b 0.015 c 0.015 MODEL 0.381 0.381 0.381 0.381 0.381 0.381 0.381 0.381 SM-1 0.190 4.83 0.130 3.30 0.110 2.79 0.060 1.52 0.040 1.02 0.062 1.57 0.100 2.54 0.250 6.35 SM-2 0.260 6.60 0.155 3.94 0.125 3.18 0.070 1.78 0.070 1.78 0.096 2.44 0.112 2.84 0.337 8.56 SM-3 0.625 15.88 0.270 6.86 0.250 6.35 0.120 3.05 0.135 3.43 0.200 5.08 0.150 3.81 0.700 17.78 SM-4 0.450 11.43 0.250 6.35 0.180 4.57 0.120 3.05 0.100 2.54 0.155 3.94 0.230 5.84 0.540 13.72 SM-5 0.820 20.83 0.295 7.49 0.305 7.75 0.150 3.81 0.190 4.83 0.220 5.59 0.250 6.35 0.900 22.86 MATERIAL SPECIFICATIONS DERATING 120 Element: copper-nickel alloy 100 Encapsulation: molded epoxy Core: ceramic 80 Terminal: matte tin 60 Part Marking: HEI, model, value, tolerance, date code 40 Note 20 Due to resistor size limitations some resistors will have minimal information marked on parts 0 - 55 0 50 100 150 200 250 300 350 70 AMBIENT TEMPERATURE IN C PERFORMANCE TEST CONDITIONS OF TEST TEST LIMITS Thermal Shock -55 C to +150 C, 1000 cycles, 15 min at each extreme 0.5 % + 0.05 Short Time Overload 5x rated power for 5 s 0.5 % + 0.05 Low Temperature Storage -55 C for 24 h 0.5 % + 0.05 Load Life 1000 h at rated power, +70 C, 1.5 h ON, 0.5 h OFF 1.0 % + 0.05 Resistance to Solder Heat MIL-STD 202 260 C, 10 s 0.5 % + 0.05 Moisture Resistance Per MIL-STD 202 1.0 % + 0.05 PACKAGING REEL MODEL TAPE WIDTH DIAMETER PIECES/REEL PACKAGE CODE 178 mm/7 650 E6 SM-1 12 mm/embossed plastic 330 mm/13 3000 E7 178 mm/7 600 E6 SM-2 16 mm/embossed plastic 330 mm/13 2000 E7 178 mm/7 125 E6 SM-3 24 mm/embossed plastic 330 mm/13 500 E7 178 mm/7 250 E6 SM-4 24 mm/embossed plastic 330 mm/13 1000 E7 178 mm/7 180 E6 SM-5 32 mm/embossed plastic 330 mm/13 500 E7 Revision: 06-Apr-18 Document Number: 31812 2 For technical questions, contact: ww2bresistors vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc 91000 RATED POWER IN %