WFM VISHAY | Alldatasheet

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www.vishay.com Vishay Dale Revision: 13-May-2020 1 Document Number: 30387 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 Power Metal Plate™ Current Sense Resistors, Low Value (10 m to 500 m), Surface-Mount, High Power LINKS TO ADDITIONAL RESOURCES

FEATURES

  • 2010 and 2512 size package
  • Ideal for all types of current sensing and pulse applications including switching and linear power supplies, instruments, power amplifiers, shunts, power inverters, and battery management
  • Proprietary processing technique produces low resistance values (10 m to 500 m)
  • Solid metal manganese-copper and nickel- chromium-aluminum alloy resistive element with low TCR (< 20 ppm/°C)
  • Very low inductance 0.5 nH to 5 nH
  • Low thermal EMF (< 3 μV/°C)
  • AEC-Q200 qualified (1)
  • PATENT(S): www.vishay.com/patents
  • Material categorization: fo r definitions of compliance please see www.vishay.com/doc?99912 Note (1) Flame retardance test may not be applicable to some resistor technologies Note (1) Terminal temperature Notes (1) Resistance values available according to WSL decade values (www.vishay.com/doc?30117) (2) Packaging code: EB (lead (Pb)-free) is a non-standard packaging code designating 1000 piece reels. This non-standard packaging code is identical to our standard EA (lead (Pb)-free), except that it has a package quantity of 1000 pieces (3) Follow link for customization capabilities: www.vishay.com/doc?48614 PATENT(S): www.vishay.com/patents This Vishay product is protected by one or more United States and international patents. 333DDD3 D 3D Models Did You Know Videos Infographics STANDARD ELECTRICAL SPECIFICATIONS GLOBAL MODEL SIZE POWER RATING (1) W TOLERANCE RESISTANCE VALUE RANGE WEIGHT (typical) g/1000 pieces WFMA2010 2010 3.0 at 70 °C ± 1.0 0.010 to 0.0329 32 WFMA2010 2010 2.0 at 110 °C ± 1.0 0.010 to 0.0329 32 WFMB2010 2010 3.0 at 70 °C ± 1.0 0.033 to 0.500 32 WFMB2010 2010 2.0 at 110 °C ± 1.0 0.033 to 0.500 32 WFMA2512 2512 4.0 at 70 °C ± 1.0 0.010 to 0.0329 41 WFMA2512 2512 3.0 at 95 °C ± 1.0 0.010 to 0.0329 41 WFMB2512 2512 4.0 at 70 °C ± 1.0 0.033 to 0.500 41 WFMB2512 2512 3.0 at 95 °C ± 1.0 0.033 to 0.500 41 GLOBAL PART NUMBER INFORMATION Global Part Numbering Example: WFMB2512R5000FEA GLOBAL MODEL (3 digits) ELEMENT MATERIAL (1 digit) CASE SIZE (4 digits) RESISTANCE VALUE (1) (5 digits) TOLERANCE CODE (1 digit) PACKAGING CODE (2) (2 digits) SPECIAL (3) (2 digits) WFM A = CuMn B = NiCrAl 2010 2512 R = decimal R0100 = 0.01  F = ± 1.0 % J = ± 5.0 % EA = lead (Pb)-free, tape / reel Dash numbers 1 thru 99 as applicable F M B 2 5 1 2 R 5 0 0 0 F E AW

www.vishay.com Vishay Dale Revision: 13-May-2020 2 Document Number: 30387 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 Notes (1) Element TCR - only applies to the alloy used for the resistor element (2) Component TCR - total TCR that includes the TCR effects of the resistor element and the copper terminal (3) Maximum working voltage - the WFM is not voltage sensitive, but is limited by power / energy dissipation and is also not ESD sensitive DIMENSIONS CONSTRUCTION OUTLINE (1) Notes

  • 3D models available: www.vishay.com/doc?30401
  • Surface mount solder profile recommendations: www.vishay.com/doc?31052 (1) For construction advantages and performance details refer to “Did You Know?”: www.vishay.com/doc?48567 TECHNICAL SPECIFICATIONS PARAMETER UNIT MODEL RESISTOR CHARACTERISTICS 2010 2512 Temperature coefficient (20 °C to 60 °C) (element only) (1) ppm/°C All < 20 Operating temperature range °C All -65 to +170 Maximum working voltage (3) VA l l ( P x R)1/2 Maximum terminal temperature °C All 110 95 Temperature coefficient (including terminals) (2) ppm/°C WFMA ± 110 ± 110 WFMB ± 50 ± 50 Temperature coefficient (20 °C to 60 °C) (including terminals) (2) ppm/°C WFMA ± 30 ± 40 WFMB ± 20 ± 20 l b a Typical sensing traces T1H L W

1 Sn plating

2 Ni plating

3 Adhesive

4 Cu heat spreaders

5 Overcoat

6 Cu plating

7 Resistive element

CASE SIZE RESISTANCE RANGE (m) DIMENSIONS in inches (millimeters) SOLDER PAD DIMENSIONS in inches (millimeters) L W H T1 T2 a b l 2010 10 to 500 0.200 ± 0.008 (5.08 ± 0.20) 0.100 ± 0.008 (2.54 ± 0.20) 0.020 ± 0.006 (0.50 ± 0.15) 0.028 ± 0.008 (0.70 ± 0.20) 0.016 ± 0.006 (0.40 ± 0.15) 0.049 (1.25) 0.118 (3.00) 0.138 (3.50) 2512 10 to 500 0.250 ± 0.012 (6.35 ± 0.30) 0.125 ± 0.008 (3.18 ± 0.20) 0.020 ± 0.006 (0.50 ± 0.15) 0.035 ± 0.008 (0.90 ± 0.20) 0.020 ± 0.008 (0.50 ± 0.20) 0.061 (1.55) 0.142 (3.60) 0.173 (4.40) PRODUCT RESISTANCE RANGE () THERMAL RESISTANCE (°C/W) ALLOY WFMA2010 0.01 to 0.0329 < 30 Mn-Cu WFMB2010 0.033 to 0.5 < 55 Ni-Cr WFMA2512 0.01 to 0.0329 < 25 Mn-Cu WFMB2512 0.033 to 0.5 < 40 Ni-Cr

www.vishay.com Vishay Dale Revision: 13-May-2020 3 Document Number: 30387 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 PULSE ENERGY AND POWER VS. TIME Notes

  • Data is valid for 33 m . Other resistance values require separate testing
  • Continuous pulse chart is tested using a square wave pulse of 10 % duty cycle, not exceeding 0.5 % resistance change DERATING - TERMINAL TEMPERATURE Note (1) Typical performance is based on summary statistics from qualification data . Performance may vary base d on application operating conditions 0.1 100 1000 100 1000 10 000 0.0001 0.001 0.01 0.1 1 10 100 Single Pulse Pulse Energy (J) 2nd line 2nd line Pulse Power (W) Pulse Length (s) 2512 (W) 2010 (J) 2512 (J) 2010 (W) 0.1 100 1000 0.1 100 1000 0.01 0.1 1 10 Continuous Pulse Pulse Energy (J) 2nd line 2nd line Pulse Power (W) Pulse Length (s) 2512 (W) 2010 (J) 2512 (J) 2010 (W) 0.001 100 1,000 100 1000 10000 100 120 0 2 04 06 08 0 1 0 0 1 2 0 1 4 0 1 6 0 1 8 0 Axis Title 1st line 2nd line 2nd line Rated Power (%) Terminal Temperature (°C) 2010 100 1000 10000 100 120 0 2 04 06 08 0 1 0 0 1 2 0 1 4 0 1 6 0 1 8 0 Axis Title 1st line 2nd line 2nd line Rated Power (%) Terminal Temperature (°C) 2512 PERFORMANCE TEST CONDITIONS OF TEST TEST LIMITS TYPICAL PERFORMANCE (1) CuMn NiCr Thermal shock -55 °C to +150 °C, 2000 cycles, 15 min at each extreme ± 0.5 % -0.3 % +0.15 % Low temperature storage -65 °C for 24 h ± 0.1 % ± 0.5 % +0.05 % High temperature exposure 2000 h at +170 °C ± 1.0 % -0.18 % +0.15 % Bias humidity +85 °C, 85 % RH, 10 % power, 1000 h ± 0.5 % +0.1 % +0.05 % Mechanical shock 100 g’s for 6 ms, 5 pulses ± 0.2 % ± 0.5 % ± 0.5 % Vibration Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h ± 0.2 % ± 0.5 % ± 0.5 % Load life 2000 h at maximum te rminal temperature at rated power ± 0.7 % -0.1 % +0.1 % Resistance to solder heat +260 °C solder, 10 s to 12 s dwell, 25 mm/s emergence ± 0.3 % +0.15 % ± 0.5 % Moisture resistance MIL- STD-202, method 106, 0 % power, 7b not required ± 0.3 % +0.1 % +0.05 %

www.vishay.com Vishay Dale Revision: 13-May-2020 4 Document Number: 30387 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 Notes

  • Embossed carrier tape per EIA-481
  • Additional packaging details at www.vishay.com/doc?20051 PACKAGING MODEL REEL TAPE WIDTH DIAMETER PIECES/REEL CODE WFMA2010 12 mm / embossed plastic 178 mm / 7" 4000 EA WFMB2010 12 mm / embossed plastic 178 mm / 7" 4000 EA WFMA2512 12 mm / embossed plastic 178 mm / 7" 2000 EA WFMB2512 12 mm / embossed plastic 178 mm / 7" 2000 EA

www.vishay.com Vishay Revision: 01-Jan-2019 1 Document Number: 91000 Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA AR E SUBJECT TO CHANGE WITH OUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Vishay Intertechnology, Inc., its affiliates, agents, and employee s, and all persons acting on it s or their behalf (collectivel y, “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 specia l, consequential or incidental damages, and (iii) any and all implied warranties, incl uding warranties of fitness for particular purpose, non-infringement and merchantability. Statements regarding the suitability of products for certain types of applicatio ns 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 applic ation. It is the customer’s responsibility to validate tha t a particular product with the prope rties described in the product sp ecification is suitable for use in a particular application. Parameters provided in datasheets and / or specifications may vary in different ap plications 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 term s 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 product s not expressly indicated for use in such applications do so at their own risk. Please contact authorized Vishay personnel to obtain writ ten terms and conditions rega rding products designed for such applications. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is gr anted by this document or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners. © 2019 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED