WSZ Vishay Wirewound Resistors, Surface Mount, Silicone or Cement Coated, High Power FEATURES * * * * * * * Low cost, high power (up to 3.75 W) All welded construction Ideal for pulsing application Ceramic core Available on tape and reel 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 RESISTANCE RESISTANCE POWER RESISTANCE RESISTANCE RANGE (2) RANGE (2) RATING RANGE RANGE TOLERANCE WEIGHT SIZE (typical) ENCAPS. TCR TCR P25 C - 10 ... - 80 ppm/K (3) 100 ... 180 ppm/K TCR TCR % g W 50 ppm/C 30 ppm/C (CLASS 3) (CLASS 1) 1 to 510 n/a n/a n/a 1 0.22 to 510 n/a n/a n/a 2 (4) WSZ6720 6720 1.8 0.6 Cement 0.10 to 510 24 to 3.3K n/a n/a 5 0.10 to 510 1.8 to 3.3K n/a n/a 10 n/a n/a n/a 10 to 15K 1, 3 WSZ7532 7532 3.75 0.7 Silicone n/a n/a 1 to 9.99 10 to 15K 5, 10 Notes (2) Lower TCR or other power range on request. Resistance value to be selected for 10 % tolerance from E12 and for 5 % from E24. (3) 1 400 ppm/K. (4) Power rating depends on the maximum temperature at the solder point, solder pad dimensions, the component placement density and the substrate material. GLOBAL MODEL GLOBAL PART NUMBER INFORMATION Global Part Numbering example: WSZ672011509KBM000 W S Z GLOBAL MODEL WSZ6720 6 7 2 TCR/MATERIAL 1= - 10 ... - 80 ppm/K WM 50 Class 1 3= 100 ... 180 ppm/K WM 110 Class 3 0 1 1 VALUE 3 digit value 1 digit multiplier MULTIPLIER 7 = *10-3 8 = *10-2 9 = *10-1 0 = *100 1 = *101 2 = *102 3 = *103 5 0 9 K TOLERANCE CODE F = 1.0 % G = 2.0 % J = 5.0 % K = 10.0 % TCR/MATERIAL VALUE M 0 PACKAGING BM = Lead (Pb)-free, tape/reel LX = Lead (Pb)-free, bulk Historical Part Numbering example: WSZ6720 WM 50 15 10 % BM 15 WSZ6720 WM 50 HISTORICAL MODEL B 0 0 SPECIAL 3 digits 000 = Standard 10 % BM TOLERANCE CODE PACKAGING Global Part Numbering example: WSZ75321K000JTA W S Z 7 5 3 2 1 K 0 0 0 J T A GLOBAL MODEL VALUE TOLERANCE CODE PACKAGING SPECIAL WSZ7532 R = Decimal K = Thousand 54R15 = 54.15 1K325 = 1325 F = 1.0 % G = 2.0 % H = 3.0 % J = 5.0 % K = 10 % EA = Lead (Pb)-free, tape/reel EK = Lead (Pb)-free, bulk (Dash number) (Up to 3 digits) From 1 to 999 as applicable TA = Tin/lead, tape/reel BA = Tin/lead, bulk * 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 1 For technical questions on the WSZ6720, contact: ww1resistors@vishay.com For technical questions on the WSZ7532, contact: ww2aresistors@vishay.com Document Number: 30246 Revision: 17-Mar-11 WSZ Wirewound Resistors, Surface Mount, Silicone or Cement Coated, High Power Vishay DIMENSIONS D DIMENSIONS in millimeters [inches] MODEL A E Cmax. Dnom. E Z 13.2 17 0.5 4.8 0.8 5 0.5 3.6 0.5 WSZ6720 [0.512] [0.670] [0.189] [0.031] [0.20 0.02] [0.142 0.02] C 14.27 19.86 4.78 0.813 WSZ7532 [0.562] [0.782] [0.188] [0.032] B 8.18 [0.322] 6.5 [0.256] Z a I B Amax. SOLDER PAD DIMENSIONS in millimeters [inches] MODEL 0.4 PIN PLANE b a b l WSZ6720 10 [0.394] 10 [0.394] 14.5 [0.57] WSZ7532 4.0 [0.157] 9.50 [0.374] 15.05 [0.593] TECHNICAL SPECIFICATIONS PARAMETER UNIT Temperature Coefficient WSZ6720 ppm/C WSZ7532 See Standard Electrical Specifications table Operating Temperature Range C Maximum Working Voltage V - 55 to + 250 (P x R)1/2 - 65 to + 350 Terminal Strength lb 10 minimum PERFORMANCE TEST TEST LIMITS CONDITIONS OF TEST Temperature Cycling - 55 C to + 125 C, 5 cycles, 15 min at each extreme WSZ6720 WSZ7532 3 % R (2 % + 0.05 ) R High Temperature Exposure 1000 h at + 250 C 3 % R (2 % + 0.05 ) R Short Time Overload 5 x rated power for 5 s 1 % R (2 % + 0.05 ) R Shock, Specified Pulse 100 g's for 6 ms, 10 shocks 1 % R (2 % + 0.05 ) R Vibration, High Frequency Frequency varied 10 Hz to 2000 Hz, 20 g peak, 2 directions 6 h each 1 % R (2 % + 0.05 ) R Load Life 2000 h at rated power, + 25 C, 1.5 h "ON", 0.5 h "OFF" 3 % R (3 % + 0.05 ) R Resistance to Soldering Heat + 260 C solder, 10 s to 12 s dwell, 25 mm/s emergence 1 % R (0.5 % + 0.05 ) R DERATING RATED POWER IN % TEMPERATURE RISE IN C TEMPERATURE RISE 300 200 WSZ6720 WSZ7532 100 120 100 80 WSZ7532 60 WSZ6720 40 20 0 - 55 0 0 1 2 3 4 5 POWER IN W Measurement based on recommended solder pads 50 150 250 350 AMBIENT TEMPERATURE IN C PACKAGING MODEL REEL TAPE WIDTH DIAMETER PIECES/REEL CODE 24 mm 330 mm 1250 BM 32 mm/embossed plastic 330 mm/13" 350 EA/TA WSZ6720 WSZ7532 (1) Note (1) Embossed carrier tape per EIA-481. Document Number: 30246 Revision: 17-Mar-11 For technical questions on the WSZ6720, contact: ww1resistors@vishay.com For technical questions on the WSZ7532, contact: ww2aresistors@vishay.com www.vishay.com 2 Legal Disclaimer Notice www.vishay.com 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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No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners. Material Category Policy Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (EEE) - recast, unless otherwise specified as non-compliant. Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU. Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21 conform to JEDEC JS709A standards. Revision: 02-Oct-12 1 Document Number: 91000