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 Excellent stability at different environmental Available conditions High power ratings (up to 2 W) (1) AEC-Q200 qualified Material categorization: Available for definitions of compliance please see Note www.vishay.com/doc 99912 * This datasheet provides information about parts that are Note Available RoHS-compliant and / or parts that are non RoHS-compliant. For (1) example, parts with lead (Pb) terminations are not RoHS-compliant. Flame retardance test may not be applicable to Please see the information / tables in this datasheet for details some resistor technologies Available STANDARD ELECTRICAL SPECIFICATIONS POWER RATING RESISTANCE TEMPERATURE GLOBAL TOLERANCE (2) SIZE INCH P RANGE COEFFICIENT ENCAPSULATION 70 C MODEL % W ppm/C 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 Notes WSF2012 has been obsoleted PTN-DR-00013-2018 Rev. 0 - July 20, 2018. WSF2515 and WSF4527 sizes are not affected (1) E96 values only (2) 50 ppm/C and 25 ppm/C available (3) Resistance values above 31.25 k are limited to 250 V maximum working voltage TECHNICAL SPECIFICATIONS PARAMETER UNIT WSF2515 WSF4527 > 500 > 500 Dielectric withstanding voltage V AC 9 Insulation resistance > 10 Operating temperature range C -65 / +175 -65 / +150 1/2 1/2 (1) Maximum working voltage V (P x R) (P x R) Weight/1000 pieces (typical) g 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 (1) Resistance values above 31.25 k are limited to 250 V maximum working voltage 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 WSF2515 R = decimal D = 0.5 % E = 25 ppm/C EA = lead (Pb)-free, (dash number) WSF4527 K = thousand F = 1.0 % H = 50 ppm/C tape / reel (up to 2 digits) 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 % applicable TA = tin / lead, tape / reel 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 Note WSF2012 has been obsoleted PTN-DR-00013-2018 Rev. 0 - July 20, 2018. WSF2515 and WSF4527 sizes are not affected Revision: 08-Jun-2020 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) W MODEL H LH T W W 1 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 0.455 0.020 0.167 0.010 0.100 0.010 0.275 0.005 0.215 0.005 1 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 ab l l b 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) a Note WSF2012 has been obsoleted PTN-DR-00013-2018 Rev. 0 - July 20, 2018. WSF2515 and WSF4527 sizes are not affected 200 120 100 150 80 WSF4527 WSF2515 100 60 WSF2515 40 50 20 WSF4527 0 0 0 0.5 1.0 1.5 2.0 -65 -25 0 25 50 75 100 125 150 175 200 Power in W Ambient Temperature 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 WSF2515 16 mm / embossed plastic 330 mm / 13 2000 EA/TA WSF4527 24 mm / embossed plastic 330 mm / 13 1200 EA/TA Notes Embossed carrier tape per EIA-481 WSF2012 has been obsoleted PTN-DR-00013-2018 Rev. 0 - July 20, 2018. WSF2515 and WSF4527 sizes are not affected Additional packaging details at www.vishay.com/doc 20051 Revision: 08-Jun-2020 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 %