333 3 WSK1216 www.vishay.com Vishay Dale Power Metal Strip Resistors, Low Value, High Power, Surface-Mount, 4-Terminal FEATURES 4-terminal design allows for 1 % tolerance down to 0.0005 High power-to-footprint print size ratio All welded Power Metal Strip construction is ideal for all types of current sensing, voltage division and pulse applications Proprietary processing technique produces extremely low resistance values, down to 0.0005 Sulfur resistance by construction that is unaffected by high sulfur environments Solid metal manganese-copper and manganese-copper- tin alloy resistive element with low TCR (< 20 ppm/C) LINKS TO ADDITIONAL RESOURCES Very low inductance 0.5 nH to 5 nH Low thermal EMF (< 3 V/C) Maximum solder temperature up to 350 C for 30 s 3D Models Design Tools Infographics (1) AEC-Q200 qualified PATENT(S): www.vishay.com/patents 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 VALUE WEIGHT GLOBAL THERMAL TOLERANCE (1) SIZE P RANGE (typical) 70 C MODEL RESISTANCE % W g/1000 pieces 3.0 14.5 1.0 1m 60 WSK1216 1216 5.0 7.3 1.0 0.5m 60 Notes The full power rating of Power Metal Strip resistors are dependent upon the ability of the circuit board to dissipate the heat energy created in the resistance element. It is recommended to follow common design practices for power semiconductors that ensure the junction temperature is maintained with in thermal limits by using large pad surfaces, thermal vias, heavier copper weights, internal layers as well as other thermal spreading features. The thermal resistance values provided function in the same manner as junction to terminal temperature (1) Other values may be available, contact factory GLOBAL PART NUMBER INFORMATION Global Part Numbering Example: WSK12161L000FEA (WSK1216, 0.001 , 1 %) (visit www.vishay.net Vishay Dale parts numbering manual for all options) W S K 1 2 1 6 1 L 0 0 0 F E A (1) (2) GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING CODE SPECIAL (7 digits) (5 digits) (1 digit) (2 digits) (2 digits) WSK1216 L = m F = 1.0 % EA = lead (Pb)-free, tape / reel (dash number) 1L000 = 0.0010 (up to 2 digits) L5000 = 0.0005 From 1 to 99 as applicable Notes (1) Packaging code: EB (lead (Pb)-free) is a non-standard packaging code designating 1000 piece reels. The non-standard packaging code is identical to our standard EA (lead (Pb)-free), except that it has a package quantity of 1000 pieces (2) Follow link for customization capabilities: www.vishay.com/doc 48163 PATENT(S): www.vishay.com/patents This Vishay product is protected by one or more United States and international patents. Revision: 08-Mar-2021 Document Number: 30189 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 DDD D WSK1216 www.vishay.com Vishay Dale TECHNICAL SPECIFICATIONS PARAMETER UNIT WSK RESISTOR CHARACTERISTICS Component temperature coefficient < 50 ppm over temperature of +20 C to +60 C, 1 m ppm/C (1) (including terminal) < 150 ppm over temperature of +20 C to +60 C, 0.5 m (2) Element TCR ppm/C < 20 Operating temperature range C -65 to +170 (3) 1/2 Maximum working voltage V(P x R) 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 (3) Maximum working voltage - the WSL is not voltage sensitive, but is limited by power / energy dissipation and is also not ESD sensitive DIMENSIONS in inches (millimeters) CONSTRUCTION OUTLINE W L R N 2 1 H S U 3 1 Resistive element: refer to table below c for element material 2 Terminal: solid copper a 3 Terminal / element weld b w d DIMENSIONS in inches (millimeters) MODEL R WL H SU N (REF.) 0.122 - 0.014 0.150 0.012 0.075 - 0.014 0.106 0.020 0.004 0.031 + 0.012 0.024 0.006 WSK1216 (3.1 - 0.35) (3.81 0.3) (1.9 - 0.35) (2.70) (0.5 0.1) (0.8 + 0.3) (0.6 0.15) SOLDER PAD DIMENSIONS RESISTANCE VALUE MODEL ELEMENT MATERIAL MODEL (m) a bc d w 0.5 MnCuSn 0.116 0.024 0.020 0.028 0.142 WSK1216 WSK1216 (2.95) (0.61) (0.50) (0.70) (3.60) 1.0 MnCu Notes 3D models available: www.vishay.com/doc 30334 Surface mount solder profile recommendations: www.vishay.com/doc 31052 Revision: 08-Mar-2021 Document Number: 30189 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