WSLS2512, Improved Stability www.vishay.com Vishay Dale Power Metal Strip® Resistors, Improved Stability (0.25 % and 0.5 %), Low Value, Surface Mount FEATURES • Current sensing in high-temperature (+125 °C) applications • Greater stability with maximum resistance change of 0.25 % or 0.5 % through 2000 h workload • All welded construction of the Power Metal Strip® resistors are ideal for all types of current sensing, voltage division, and pulse applications • Proprietary processing technique produces extremely low resistance values (0.01  to 0.1 ) Available • Solid metal nickel-chrome resistive element with low TCR (< 20 ppm/°C) • Sulfur resistance by construction that is DESIGN SUPPORT TOOLS click logo to get started unaffected by high sulfur environments • Very low inductance 0.5 nH to 2 nH Available • Low thermal EMF (< 3 μV/°C) Models Design Tools • AEC-Q200 qualified (1) Available Available • Material categorization: for definitions of compliance 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 WEIGHT TOLERANCE GLOBAL MODEL SIZE P VALUE RANGE (typical) 70 °C ± % W  g/1000 pieces WSLS2512 2512 1.0 0.5, 1.0, 5.0 0.01 to 0.1 63.6 Note • Part marking: value, RTC / stability code TECHNICAL SPECIFICATIONS PARAMETER UNIT RESISTOR CHARACTERISTICS Component temperature coefficient ppm/°C ± 75 (including terminal) (1) Element TCR (2) ppm/°C < 20 Operating temperature range °C -65 to +170 Maximum working voltage (3) V (P x R)1/2 Notes (1) Component TCR - total TCR that includes the TCR effects of the resistor element and the copper terminal (2) Element TCR - only applies to the alloy used for the resistor element; refer to item 1 in the construction illustration on the following page (3) Maximum working voltage - the WSL is not voltage sensitive, but is limited by power / energy dissipation and is also not ESD sensitive GLOBAL PART NUMBER INFORMATION Global Part Numbering example: WSLS2512R0100FHEA (visit www.vishay.net Vishay Dale parts numbering manual for all options) W S L S 2 5 1 2 R 0 1 0 0 F H E A GLOBAL MODEL RESISTANCE VALUE (1) TOLERANCE CODE RTC / STABILITY PACKAGING CODE (2) SPECIAL WSLS2512 R = decimal D = ± 0.5 % G = 75 ppm, EA = lead (Pb)-free, (dash number) R0100 = 0.01  F = ± 1.0 % 0.25 % stability tape / reel (single digit) J = ± 5.0 % H = 75 ppm, EK = lead (Pb)-free, from 1 to 9 0.5 % stability bulk Notes (1) WSL marking (www.vishay.com/doc?30327); WSL Decade Values (www.vishay.com/doc?30117) (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 Revision: 19-Mar-18 1 Document Number: 30123 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

WSLS2512, Improved Stability www.vishay.com Vishay Dale DIMENSIONS in inches (millimeters) H l b W T a L Typical sensing traces Notes • 3D models available: www.vishay.com/doc?30306 • Surface mount solder profile recommendations: www.vishay.com/doc?31052 DIMENSIONS SOLDER PAD DIMENSIONS MODEL L W H T a b l 0.250 ± 0.010 0.125 ± 0.010 0.025 ± 0.010 0.030 ± 0.010 0.065 0.145 0.160 WSLS2512 (6.35 ± 0.254) (3.18 ± 0.254) (0.635 ± 0.254) (0.762 ± 0.254) (1.65) (3.68) (4.06) WELDED CONSTRUCTION 2512 DERATING % 120 n er i 100 w 1) Resistive element: o P 80 solid metal nickel-chrome d or manganese-copper ate alloy resistive element with R 60 low TCR (< 20 ppm/°C) 4 2) Plated terminal 40 3) Terminal / element weld 1 4) Silicone coating with ink print 20 2 3 0 -65-50 -25 0 25 50 75 100 125 150 170 Ambient Temperature in °C 70 PERFORMANCE TEST LIMITS TEST CONDITIONS OF TEST 0.25 % 0.5 % Thermal shock -55 °C to +150 °C, 1000 cycles, 15 min at each extreme ± 0.5 % + 0.005  Short time overload 5 x rated power for 5 s for WSL2512 size or smaller ± 0.5 % + 0.005  Low temperature operation -65 °C for 24h ± 0.5 % + 0.005  High temperature exposure 1000 h at +170 °C ± 1.0 % + 0.005  Bias humidity +85 °C, 85 % RH, 10 % bias, 1000 h ± 0.5 % + 0.005  Mechanical shock 100 g’s for 6 ms, 5 pulses ± 0.5 % + 0.005  Vibration Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h ± 0.5 % + 0.005  Load life 2000 h at 70 °C, 1.5 h “ON”, 0.5 h “OFF” ± 0.25 % ± 0.5 % Resistance to solder heat +260 °C solder, 10 s to 12 s dwell, 25 mm/s emergence ± 0.5 % + 0.005  Moisture resistance MIL-STD-202, method 106, 0 % power, 7b not required ± 0.5 % + 0.005  PACKAGING (1) REEL MODEL TAPE WIDTH DIAMETER PIECES/REEL CODE WSLS2512 12 mm / embossed plastic 178 mm / 7" 2000 EA Notes • Embossed carrier tape per EIA-481 (1) Additional packaging details at www.vishay.com/doc?20051 Revision: 19-Mar-18 2 Document Number: 30123 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

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