WSR www.vishay.com Vishay Dale Power Metal Strip® Resistors, Low Value (down to 0.001 ), Surface Mount FEATURES • Molded high temperature encapsulation • All welded construction of the Power Metal Strip® resistors are ideal for all types of current sensing, voltage division and pulse applications Available • Proprietary processing technique produces extremely low resistance values (down to 0.001 ) • Sulfur resistance by construction that is unaffected by high sulfur environments • Solid metal nickel-chrome or manganese- copper alloy resistive element with low TCR (< 20 ppm/°C) Available • Very low inductance 0.5 nH to 5 nH DESIGN SUPPORT TOOLS click logo to get started • Excellent frequency response to 50 MHz • Low thermal EMF (< 3 μV/°C) Available • AEC-Q200 qualified (1) Models Design Tools • Material categorization: for definitions of compliance Available Available please see www.vishay.com/doc?99912 Notes • This datasheet provides information about parts that are RoHS-compliant and / or parts that are non-RoHS-compliant. For example, parts with lead (Pb) terminations are not RoHS-compliant. Please see the information / tables in this datasheet for details • Follow link to Overview of Automotive Grade Products for more details: www.vishay.com/doc?49924 (1) Flame retardance test may not be applicable to some resistor technologies STANDARD ELECTRICAL SPECIFICATIONS POWER RATING RESISTANCE VALUE RANGE WEIGHT GLOBAL SIZE P  (typical) MODEL 70 °C W Tol. ± 0.5 % Tol. ± 1.0 % g/1000 pieces WSR2 4527 2.0 0.005 to 1.0 0.001 to 1.0 440 WSR3 4527 3.0 (1) 0.005 to 0.2 0.001 to 0.2 440 Notes • Part marking: DALE, model, value, tolerance, date code (1) The WSR3 requires a minimum of 1050 sq. mil. circuit traces connecting to the recommended solder pad TECHNICAL SPECIFICATIONS PARAMETER UNIT WSR2 AND WSR3 RESISTOR CHARACTERISTICS ± 75 for 0.010  to 1.0 ; ± 110 for 0.005  to 0.0099 ; Temperature coefficient ppm/°C ± 300 for 0.004  to 0.0049 ± 450 for 0.003  to 0.0039 ; ± 600 for 0.002  to 0.0029 ; ± 750 for 0.001  to 0.0019  Element TCR ppm/°C < 20 Dielectric withstanding voltage V > 500 AC Insulation resistance  > 109 Operating temperature range °C -65 to +275 Maximum working voltage V (P x R)1/2 GLOBAL PART NUMBER INFORMATION Global Part Numbering example: WSR25L000FEA (visit www.vishay.net Vishay Dale parts numbering manual for all options) W S R 2 5 L 0 0 0 F E A GLOBAL MODEL RESISTANCE VALUE (1) TOLERANCE CODE PACKAGING CODE (2) SPECIAL (3) WSR2 L = m* D = ± 0.5 % EA = lead (Pb)-free, tape/reel (dash number) WSR3 R = decimal F = ± 1.0 % EK = lead (Pb)-free, bulk (up to 2 digits) 5L000 = 0.005  J = ± 5.0 % from 1 to 99 as R0100 = 0.01  TA = tin/lead, tape/reel (R86) applicable * Use “L” for resistance BA = tin/lead, bulk (B43) values < 0.01  Notes (1) WSR Marking (www.vishay.com/doc?30327) (2) Packaging code: EB (lead (Pb)-free) and TB (tin / lead) are non-standard packaging codes designating 1000 piece reels. These non-standard packaging codes are identical to our standard EA (lead (Pb)-free) and TA (tin / lead), except that they have a package quantity of 1000 pieces (3) Follow link for customization capabilities: www.vishay.com/doc?48163 Revision: 11-Jul-2018 1 Document Number: 30101 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

WSR www.vishay.com Vishay Dale DIMENSIONS in inches (millimeters) W H I b W1 T a L Notes • 3D models available: www.vishay.com/doc?30336 • Surface mount solder profile recommendations: www.vishay.com/doc?31052 DIMENSIONS SOLDER PAD DIMENSIONS MODEL L H T W W a b l 1 0.455 ± 0.032 WSR2,  0.095 ± 0.005 0.100 ± 0.010 0.275 ± 0.005 0.215 ± 0.005 0.155 0.230 0.205 (11.56 ± WSR3 (2.41 ± 0.127) (2.54 ± 0.254) (6.98 ± 0.127) (5.46 ± 0.127) (3.94) (5.84) (5.21) 0.813) Note • Sensing locations are based on the construction of the part; terminals are wrapped from the outside to underneath. These options place the sensing location nearest the temperature stable resistance element, which minimizes contact resistance and optimizes TCR TYPICAL SENSING LAYOUT a a b c l c a b c l 0.155 0.230 0.020 0.205 (3.94) (5.84) (0.51) (5.21) DERATING PULSE CAPABILITY % 120 n wer i 100 click to get started OO N LLLLL YY ed Po 80 O S EE SS Rat U RR PP 60 E P V TI 40 R AAA T S U LL 20 LL II 0 - 65 - 25 25 75 125 175 225 275 Ambient Temperature °C 70 www.vishay.com/resistors/power-metal-strip-calculator Revision: 11-Jul-2018 2 Document Number: 30101 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

WSR www.vishay.com Vishay Dale PERFORMANCE TEST LIMITS TEST CONDITIONS OF TEST WSR2 WSR3 Thermal shock -55 °C to +150 °C, 1000 cycles, 15 min at each extreme ± 0.5 % + 0.0005  ± 0.5 % + 0.0005  WSR2: 5x rated power for 5 s Short time overload ± 0.5 % + 0.0005  ± 2.0 % + 0.0005  WSR3: 4x rated power for 5 s Low temperature storage -65 °C for 24 h ± 0.5 % + 0.0005  ± 0.5 % + 0.0005  High temperature 1000 h at +275 °C ± 1.0 % + 0.0005  ± 1.0 % + 0.0005  exposure Bias humidity +85 °C, 85 % RH, 10 % bias, 1000 h ± 0.5 % + 0.0005  ± 0.5 % + 0.0005  Mechanical shock 100 g’s for 6 ms, 5 pulses ± 0.5 % + 0.0005  ± 0.5 % + 0.0005  Vibration Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h ± 0.5 % + 0.0005  ± 0.5 % + 0.0005  Load life 1000 h at rated power, +70 °C, 1.5 h “ON”, 0.5 h “OFF” ± 1.0 % + 0.0005  ± 2.0 % + 0.0005  Resistance to solder heat +260 °C solder, 10 s to 12 s dwell, 25 mm/s emergence ± 0.5 % + 0.0005  ± 0.5 % + 0.0005  MIL-STD-202, method 106, 0 % power, 7a and 7b not Moisture resistance ± 0.5 % + 0.0005  ± 0.5 % + 0.0005  required PACKAGING (1) REEL MODEL TAPE WIDTH DIAMETER PIECES/REEL CODE WSR2 and WSR3 24 mm/embossed plastic 330 mm/13" 1500 EA Notes • Embossed Carrier Tape per EIA-481 (4) Additional packaging details at www.vishay.com/doc?20051 Revision: 11-Jul-2018 3 Document Number: 30101 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

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. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application. Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein. Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the Vishay product could result in personal injury or death. Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. 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. © 2017 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED Revision: 08-Feb-17 1 Document Number: 91000

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: V ishay: WSR31L350JTA WSR2R7680FBA WSR2R0698FBA WSR2R0806FBA WSR2R1200FTA WSR2R1500FTA WSR2R9100FBA WSR2R9400FBA WSR2R3900FTB WSR2R3300FBA WSR2R5600FBA WSR2R5200FBA WSR2R7500FBA WSR2R0200FBA WSR2R0400FBA WSR2R0100FBA WSR2R0700FTB WSR2R0300FBA WSR2R0600FBA WSR2R2800FBA WSR2R6800FBA WSR2R4700FBA WSR2R2500FBA WSR3R1000DBA WSR2R5000DBA WSR2R0221FBA WSR2R0249FBA WSR3R0120FBA WSR2R0150FBA WSR28L000FBA WSR25L000FBA WSR31L000FBA WSR26L000FBA WSR24L000FBA WSR22L000FTA WSR36L000FBA WSR23L000FBA WSR21L000JTB WSR35L000FTB WSR33L000FBA WSR27L000FBA WSR3R0250FBA WSR2R0250FBA WSR2R0610FBA WSR2R0660FBA WSR2R3650FBA WSR32L200JBA WSR31L500JBA WSR2R4020FEB WSR2R5200FEB WSR2R0200FEB WSR2R0330FEB WSR2R0400FEB WSR2R0250FEB WSR2R3900FEB WSR2R0125FEB WSR2R3650FEB WSR2R0700FEB WSR2R2210FEB WSR2R0150FEB WSR3R0500FEB WSR3R1500FEA WSR2R0500FEB WSR2R7500FEB WSR2R1500FEB WSR35L000FEB WSR21L000JEB WSR2R1820FEB WSR27L000FEB WSR25L000FEB WSR28L000FEB WSR2R0250FEK WSR31L000JEA WSR2R0330FEA WSR27L500FEK WSR2R0500DEA WSR23L000FEA WSR26L000FEA WSR2R0250FEA WSR2R0300FEK WSR2R0320FEA WSR2R0499FEA WSR2R1500FEA WSR2R2000FEA WSR2R3000FEB WSR2R3300FEB WSR2R3900FEK WSR2R4000FEA WSR2R5000FEA WSR31L000FEA WSR32L000FEA WSR33L000FEA WSR36L000FEB WSR3R0120FEB WSR3R0150FEK WSR3R0200FEA WSR3R0300FEB WSR3R0330FEB WSR3R1500FEB WSR3R2000FEK