33 3 WSK2512 www.vishay.com Vishay Dale Power Metal Strip Resistors, Low Value (down to 0.0005 ), Surface Mount, 4-Terminal FEATURES 4-terminal design allows for 1 % tolerance down to 0.0005 and 0.5 % tolerance down to 0.001 All welded construction of the Power Metal Strip resistors are ideal for all types of current Available sensing, voltage division, and pulse applications Proprietary processing technique produces extremely low resistance values (down to Available 0.0005 ) Sulfur resistance by construction that is unaffected by high sulfur environments Available Solid metal nickel-chrome or DESIGN SUPPORT TOOLS AVAILABLE manganese-copper alloy resistive element with Available low TCR (< 20 ppm/C) Very low inductance 0.5 nH to 5 nH 3D Models Design Tools (1) AEC-Q200 qualified 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 RESISTANCE VALUE RANGE POWER RATING WEIGHT GLOBAL SIZE P (typical) 70 C MODEL W g/1000 pieces Tol. 0.1 % Tol. 0.5 % Tol. 1.0 % WSK2512 2512 1.0 0.01 to 0.2 0.001 to 0.2 0.0005 to 0.2 63.6 Note Part marking: Value, tolerance due to resistor size limitations some resistance values will be marked with only the resistance value TECHNICAL SPECIFICATIONS PARAMETER UNIT RESISTOR CHARACTERISTICS 350 for 0.5 m to 0.99 m , 250 for 0.001 to 0.0029 , Temperature coefficient ppm/C 75 for 0.003 to 0.0049 , 35 for 0.005 to 0.2 Operating temperature range C -65 to +170 1/2 Maximum working voltage V (P x R) GLOBAL PART NUMBER INFORMATION Global Part Numbering example: WSK25125L000FTA (visit www.vishay.net Vishay Dale parts numbering manual for all options) W S K 2 5 1 2 5 L 0 0 0 F T A (1) (2) GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING CODE SPECIAL WSK2512 L = m * B = 0.1 % EA = lead (Pb)-free, tape / reel (dash number) R = decimal D = 0.5 % EK = lead (Pb)-free, bulk (up to 2 digits) 5L000 = 0.005 F = 1.0 % From 1 to 99 as TA = tin / lead, tape / reel (R86) R0100 = 0.01 applicable BA = tin / lead, bulk (B43) * Use L for resistance values < 0.01 Notes (1) WSL 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 Revision: 21-Mar-2019 Document Number: 30108 1 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 DD DWSK2512 www.vishay.com Vishay Dale DIMENSIONS in inches (millimeters) L W H B T A l b d c a e Notes 3D models available: www.vishay.com/doc 30323 Surface mount solder profile recommendations: www.vishay.com/doc 31052 DIMENSIONS RESISTANCE MODEL RANGE LW H T A B 0.105 0.010 0.0005 to 0.00099 2.66 0.254 0.250 0.010 0.125 0.010 0.025 0.010 0.087 0.010 0.030 0.010 0.020 0.010 WSK2512 0.001 to 0.0049 (6.35 0.254) (3.18 0.254) (0.635 0.254) (2.21 0.254) (0.762 0.254) (0.508 0.254) 0.047 0.010 0.005 to 0.2 (1.19 0.254) SOLDER PAD DIMENSIONS RESISTANCE MODEL RANGE abcd e l 0.0005 to 0.0049 0.130 (3.30) 0.065 (1.65) WSK2512 0.130 (3.30) 0.030 (0.76) 0.020 (0.51) 0.067 (1.70) 0.005 to 0.2 0.090 (2.29) 0.145 (3.68) ELECTRICAL CONNECTION E 1 I 1 I 2 E 2 Notes E1 and E2: voltage sense connections I1 and I2: current connection Revision: 21-Mar-2019 Document Number: 30108 2 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