WSF www.vishay.com Vishay Dale Metal Film Resistors, Power, Surface Mount FEATURES Molded encapsulation Available Wraparound compliant terminations eliminate risk of solder fillet cracking Solderable terminations Available Excellent stability at different environmental conditions High power ratings (up to 2 W) (1) AEC-Q200 qualified available Material categorization: Available Note for definitions of compliance please see * This datasheet provides information about parts that are www.vishay.com/doc 99912 Available RoHS-compliant and / or parts that are non-RoHS-compliant. For Note example, parts with lead (Pb) terminations are not RoHS-compliant. (1) Flame retardance test may not be applicable to Please see the information / tables in this datasheet for details. Available some resistor technologies. STANDARD ELECTRICAL SPECIFICATIONS POWER RATING RESISTANCE TEMPERATURE GLOBAL TOLERANCE (4) SIZE INCH P RANGE COEFFICIENT ENCAPSULATION 70 C MODEL % W ppm/C (2) WSF2012 2012 0.5 0.5, 1, 5 5.0 to 1.43K 100 Epoxy WSF2515 2515 1.0 0.5, 1, 5 10 to 10K 100 Thermoplastic (3) WSF4527 4527 2.0 0.5, 1, 5 10 to 100K 100 Thermoplastic TECHNICAL SPECIFICATIONS PARAMETER UNIT WSF2012 WSF2515 WSF4527 Dielectric withstanding voltage V > 500 > 500 > 500 AC 9 Insulation resistance > 10 Operating temperature range C - 65/+ 175 - 65/+ 175 - 65/+ 150 1/2 1/2 1/2 (3) Maximum working voltage V (P x R) (P x R) (P x R) 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 2515 1 K 5 00 J K T A GLOBAL MODEL VALUE TOLERANCE TCR PACKAGING SPECIAL WSF2012 R = Decimal D = 0.5 % E = 25 ppm/C EA = Lead (Pb)-free, (Dash number) WSF2515 K = Thousand F = 1.0 % H = 50 ppm/C tape/reel (Up to 2 digits) WSF4527 100R0 = 100 G = 2.0 % K = 100 ppm/C EK = Lead (Pb)-free, bulk From 1 to 99 as 1K000 = 1 k H = 3.0 % TA = Tin/lead , tape/reel applicable J = 5.0 % (R86) K = 10 % 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 TEMPERATURE HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING COEFFICIENT Revision: 06-Nov-14 Document Number: 30104 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 WSF www.vishay.com Vishay Dale DIMENSIONS DIMENSIONS in inches (millimeters) MODEL LH T W W 1 W H 0.200 0.020 0.096 0.015 0.040 0.010 0.125 0.005 0.050 0.005 WSF2012 (5.08 0.508) (2.44 0.381) (1.02 0.254) (3.18 0.127) (1.27 0.127) 0.250 0.020 0.110 0.015 0.045 0.010 0.150 0.005 0.098 0.005 WSF2515 (6.35 0.508) (2.79 0.381) (1.14 0.254) (3.81 0.127) (2.49 0.127) W 1 0.455 0.020 0.167 0.010 0.100 0.010 0.275 0.005 0.215 0.005 WSF4527 (11.56 0.508) (4.24 0.254) (2.54 0.254) (6.98 0.127) (5.46 0.127) T L SOLDER PAD DIMENSIONS in inches (millimeters) MODEL l ab l b 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) a WSF4527 0.155 (3.94) 0.230 (5.94) 0.205 (5.21) 200 120 100 150 80 WSF4527 WSF2515 100 WSF2012 60 W SF2012 WSF2515 40 50 20 WSF4527 0 0 0 0.5 1.0 1.5 2.0 - 65 - 25 0 255 07 5 100 125 150 175 200 Power in W Ambient T emperature in C 70 Temperature Rise Derating 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 gs for 6 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 REEL MODEL 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. Revision: 06-Nov-14 Document Number: 30104 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 Temperature Rise in C Rated Power in %