WSF Vishay Dale Metal Film Resistors, Power, Surface Mount FEATURES * Molded encapsulation * Wraparound compliant terminations eliminate risk of solder fillet cracking * Solderable terminations * Excellent stability at different environmental conditions * High power ratings (up to 2 W) * AEC-Q200 qualified available (1) * Compliant to RoHS Directive 2002/95/EC Note (1) Flame retardance test may not be applicable to some resistor technologies. STANDARD ELECTRICAL SPECIFICATIONS GLOBAL MODEL SIZE INCH WSF2012 WSF2515 WSF4527 2012 2515 4527 POWER RATING P70 C W 0.5 1.0 2.0 (3) RESISTANCE RANGE 5.0 to 1.43K (2) 10 to 10K 10 to 100K TOLERANCE % 0.5, 1, 5 0.5, 1, 5 0.5, 1, 5 ENCAPSULATION Epoxy Thermoplastic Thermoplastic TECHNICAL SPECIFICATIONS PARAMETER UNIT WSF2012 WSF2515 WSF4527 100 (4) 100 (4) Temperature coefficient ppm/C 100 (4) Dielectric withstanding voltage VAC > 500 > 500 > 500 Insulation resistance > 109 Operating temperature range C - 65/+ 175 - 65/+ 175 - 65/+ 150 Maximum working voltage V (P x R)1/2 (P x R)1/2 (P x R)1/2 (3) Weight/1000 pieces (typical) g 90 165 760 Notes * Part marking: 1/2 W - DALE, value; 1 W - model, value, tolerance, date code; 2 W - DALE, model, value, tolerance, date code. (2) E96 values only. (3) Resistance values above 31.25 k are limited to 250 V maximum working voltage. (4) 50 ppm/C and 25 ppm/C available. GLOBAL PART NUMBER INFORMATION Global Part Numbering example: WSF25151K500JKTA (preferred numbering format) W S F 2 5 1 5 1 K 5 0 0 J K T A GLOBAL MODEL VALUE TOLERANCE TCR PACKAGING SPECIAL WSF2012 WSF2515 WSF4527 R = Decimal K = Thousand 100R0 = 100 1K000 = 1 k D = 0.5 % F = 1.0 % G = 2.0 % H = 3.0 % J = 5.0 % K = 10 % E = 25 ppm/C H = 50 ppm/C K = 100 ppm/C EA = Lead (Pb)-free, tape/reel EK = Lead (Pb)-free, bulk (Dash number) (Up to 2 digits) From 1 to 99 as applicable TA = Tin/lead , tape/reel (R86) BA = Tin/lead, tape/reel, bulk (B43) Historical Part Numbering example: WSF2515 1.5 k 5 % 100 ppm/C R86 (will continue to be accepted for tin/lead product only) WSF2515 1.5 k 5% 100 ppm/C R86 HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE TEMPERATURE COEFFICIENT PACKAGING * Pb containing terminations are not RoHS compliant, exemptions may apply ** Please see document "Vishay Material Category Policy": www.vishay.com/doc?99902 www.vishay.com 296 For technical questions, contact: ww2aresistors@vishay.com Document Number: 30104 Revision: 03-Dec-10 WSF Metal Film Resistors, Power, Surface Mount Vishay Dale DIMENSIONS DIMENSIONS in inches (millimeters) MODEL W H L H T W1 W WSF2012 0.200 0.020 0.096 0.015 0.040 0.010 0.125 0.005 0.050 0.005 (5.08 0.508) (2.44 0.381) (1.02 0.254) (3.18 0.127) (1.27 0.127) WSF2515 0.250 0.020 0.110 0.015 0.045 0.010 0.150 0.005 0.098 0.005 (6.35 0.508) (2.79 0.381) (1.14 0.254) (3.81 0.127) (2.49 0.127) WSF4527 0.455 0.020 0.167 0.010 0.100 0.010 0.275 0.005 0.215 0.005 (11.56 0.508) (4.24 0.254) (2.54 0.254) (6.98 0.127) (5.46 0.127) W 1 T L l 200 a b l WSF2012 0.085 (2.16) 0.070 (1.78) 0.080 (2.03) WSF2515 0.090 (2.29) 0.115 (2.92) 0.120 (3.05) WSF4527 0.155 (3.94) 0.230 (5.94) 0.205 (5.21) Rated Power in % Temperature Rise in C a 150 WSF4527 WSF2515 SOLDER PAD DIMENSIONS in inches (millimeters) MODEL b 100 WSF2012 120 100 80 60 WSF2012 WSF2515 40 50 20 0 0 0.5 1.0 1.5 Temperature Rise WSF4527 0 - 65 2.0 Power in W - 25 0 25 Derating 50 75 100 125 150 175 200 Ambient Temperature in C 70 PERFORMANCE TEST CONDITIONS OF TEST TEST LIMITS Thermal shock - 55 C to + 150 C, 1000 cycles, 15 min at each extreme (1.0 % + 0.05 ) R Short time overload 5 x rated power for 5 s (0.5 % + 0.05 ) R Low temperature storage - 65 C for 24 h (0.5 % + 0.05 ) R High temperature exposure 1000 h at + 175 C (150 C for WSF4527) (1.0 % + 0.05 ) R Bias humidity + 85 C, 85 % RH, 10 % Bias, 1000 h (0.5 % + 0.05 ) R Moisture resistance MIL-STD-202 method 106, 0 % power, 7a and 7b not required (0.5 % + 0.05 ) R Mechanical shock 100 g's for 11 ms, 5 pulses (0.5 % + 0.05 ) R Vibration Frequency varied 10 Hz to 500 Hz in one min, 3 directions, 9 h (0.5 % + 0.05 ) R Load life 1000 h at rated power, + 70 C, 1.5 h "ON", 0.5 h "OFF" (1.0 % + 0.05 ) R Resistance to solder heat + 260 C solder, 10 s to 12 s dwell, 25 mm/s emergence (0.5 % + 0.05 ) R PACKAGING MODEL REEL TAPE WIDTH DIAMETER PIECES/REEL CODE WSF2012 12 mm/embossed plastic 330 mm/13" 2000 EA/TA WSF2515 16 mm/embossed plastic 330 mm/13" 2000 EA/TA WSF4527 24 mm/embossed plastic 330 mm/13" 1200 EA/TA Note * Embossed Carrier Tape per EIA-481. Document Number: 30104 Revision: 03-Dec-10 For technical questions, contact: ww2aresistors@vishay.com www.vishay.com 297 Legal Disclaimer Notice Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. 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