WSZ Vishay Dale Wirewound Resistors, Surface Mount, Silicone or Cerment 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 * Lead (Pb)-free version is RoHS compliant STANDARD ELECTRICAL SPECIFICATIONS MODEL POWER RATING P25 C (3) WSZ6720 1.8 W WSZ7532 3.75 W RESISTANCE RANGE (1) RESISTANCE RANGE E12 = 10 % Tol., E24 = 5 % Tol. DIN 41432 ENCAPSULATION TOLERANCE TCR TCR TCR - 10 ... - 80 ppm/K (2) TCR 100 ... 180 ppm/K (CLASS 3) 50 ppm/C 30 ppm/C (CLASS 1) 1% 1 to 510 2% 0.22 to 510 Cement 15 % 0.10 to 510 24 to 3.3 k 10 % 0.10 to 510 1.8 to 3.3 k 1 %, 3 % 10 to 15 k Silicone 5 %, 10 % 1 to 9.99 10 to 15 k Notes (1) Lower TCR or other power range on request (2) 1 400 ppm/K (3) Power rating depends on the maximum temperature at the solder point, solder pad dimensions, the component placement density and the substrate material PART NUMBER AND PRODUCT DESCRIPTION Part Number: WSZ672011509KBM000 W S Z 6 7 MODEL TCR/MATERIAL WSZ6720 1= - 10 ... - 80 ppm/K WM 50 Class 1 3= 100 ... 180 ppm/K WM 110 Class 3 2 0 1 VALUE 1 5 0 9 K B M 0 0 0 TOLERANCE CODE PACKAGING CODE SPECIAL F = 1.0 % G = 2.0 % J = 5.0 % K = 10.0 % BM = Lead (Pb)-free, tape/reel LX = Lead (Pb)-free, bulk 3 digits 000 = Standard 3 digit value 1 digit multiplier MULTIPLIER 7 = *10-3 8 = *10-2 9 = *10-1 0 = *100 1 = *101 2 = *102 3 = *103 Product Description: WSZ6720 WM 50 15 10 % BM WSZ6720 WM 50 15 10 % BM MODEL (4) TCR/MATERIAL (4) VALUE (4) TOLERANCE CODE (4) PACKAGING DESCRIPTION(5) Part Number: WSZ75321K000JBA1 W S Z 7 5 3 2 1 K 0 0 0 J B A 1 MODEL VALUE TOLERANCE CODE PACKAGING CODE 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 Product Description: WSZ7532-1 1 k 5 % B43 WSZ7532-1 MODEL (4) 1 k VALUE (4) 5% TOLERANCE B43 CODE (4) PACKAGING DESCRIPTION(5) Notes (4) See "Part Number and Product Description" (5) See "Packaging Table" * Pb containing terminations are not RoHS compliant, exemptions may apply ** Please see document "Vishay Green and Halogen-Free Definitions (5-2008)": www.vishay.com/doc?99902 www.vishay.com 312 For technical questions in Europe, contact: ww1resistors@vishay.com For technical questions in Americas/Asia, contact: ww2aresistors@vishay.com Document Number: 30246 Revision: 04-Mar-09 WSZ Wirewound Resistors, Surface Mount, Silicone or Cerment Coated, High Power Vishay Dale DIMENSIONS DIMENSIONS in millimeters [inches] D MODEL A E Amax. Cmax. Dnom B E 13.2 17 0.5 4.8 0.8 5 0.5 3.6 0.5 [0.512] [0.670] [0.189] [0.031] [0.20 0.02] [0.142 0.02] WSZ6720 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 Z 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 WSZ6720 WSZ7532 Operating Temperature Range C - 55/+ 250 - 65/+ 350 Maximum Working Voltage V (P x R)1/2 (P x R)1/2 Weight (Typical) g 0.6 0.7 Terminal Strength lb 10 minimum 10 minimum PERFORMANCE TEST LIMITS TEST 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 (2 % + 0.05 ) R High Temperature Exposure 1000 h at + 250 C 3 % 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 (0.2 % + 0.05 ) R Vibration, High Frequency Frequency varied 10 Hz to 2000 Hz, 20 g peak, 2 directions 6 each 1 % R (0.2 % + 0.05 ) R 2000 h at rated power, + 25 C, 1.5 h ON, 0.5 h OFF 3 % R (3 % + 0.05 ) R + 260 C solder, 10 - 12 s dwell, 25 mm/s emergence 1 % R (0.5 % + 0.05 ) R 300 Rated Power in % Temperature Rise in C Load Life Resistance to Soldering Heat 200 WSZ6720 WSZ7532 100 120 100 80 WSZ7532 60 WSZ6720 40 20 0 0 1 2 3 4 0 - 55 5 50 Power in W Temperature Rise 150 250 350 Ambient Temperature in C Derating Measurement based on recommended solder pads PACKAGING MODEL WSZ6720 WSZ7532 (1) REEL TAPE WIDTH DIAMETER PIECES/REEL 24 mm 330 mm 1250 CODE BM 32 mm/Embossed plastic 330 mm/13" 350 EA/TA Note (1) Embossed Carrier Tape per latest revision of EIA-481-3 Document Number: 30246 Revision: 04-Mar-09 For technical questions in Europe, contact: ww1resistors@vishay.com For technical questions in Americas/Asia, contact: ww2aresistors@vishay.com www.vishay.com 313 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. 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 herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. 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. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1