333 3 WSLT4026 www.vishay.com Vishay Dale Power Metal Strip Resistors, High Temperature (275 C), High Power, Low Value, Surface Mount, 4-Terminal FEATURES 4-terminal design allows for 1 % tolerance down to 0.002 High power-to-footprint size ratio 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, down to 0.0005 Sulfur resistance by construction that is unaffected by high sulfur environments Solid metal nickel-chrome 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) 3D Models Design Tools (1) AEC-Q200 qualified Material categorization: for definitions of compliance please see www.vishay.com/doc 99912 Notes 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 RESISTANCE VALUES WEIGHT GLOBAL TOLERANCE (1) SIZE P VALUE RANGE CURRENTLY AVAILABLE (typical) 70 C MODEL % W g/1000 pieces WSLT4026 4026 3.0 1.0 0.3m to 5m 1.3m, 2m, 3m, 4m, 5m 420 Notes Power rating depends on the max. temperature at the solder point, component placement density and the substrate material Part marking: model, value, tolerance, date code (1) Other values may be available, contact factory GLOBAL PART NUMBER INFORMATION Global Part Numbering Example: WSLT40265L000FEA (WSLT4026, 0.005 , 1 %) W S L T 4 0 2 6 5 L 0 0 0 F E A (1) (2) GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING CODE SPECIAL (8 digits) (5 digits) (1 digits) (2 digits) (up to 2 digits) WSLT4026 L = m F = 1.0 % EA = lead (Pb)-free, tape / reel (dash number) 2L000 = 0.002 EK = lead (Pb)-free, bulk (up to 2 digits) 3L000 = 0.003 from 1 to 99 as 4L000 = 0.004 applicable 5L000 = 0.005 Notes (1) 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 (2) Follow link for customization capabilities: www.vishay.com/doc 48163 Revision: 17-Sep-2020 Document Number: 30186 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 WSLT4026 www.vishay.com Vishay Dale TECHNICAL SPECIFICATIONS PARAMETER UNIT RESISTOR CHARACTERISTICS (1) Component temperature coefficient (including terminal) ppm/C 75 over temperature of +20 C to +60 C (2) Element TCR ppm/C < 20 Operating temperature range C -65 to +275 (3) 1/2 Maximum working voltage V(P/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 WSHM is not voltage sensitive, but is limited by power / energy dissipation and is also not ESD sensitive DIMENSIONS in inches (millimeters) W L c T d b U S a w b R N H Notes 3D models available: www.vishay.com/doc 30320 Surface mount solder profile recommendations: www.vishay.com/doc 31052 DIMENSIONS MODEL R LW H ST U N (REF.) 0.400 0.008 0.260 + 0.012/- 0.008 0.117 0.008 0.198 0.028 0.004 0.016 0.002 0.078 0.004 0.039 0.006 WSLT4026 (10.1 0.2) (6.6 + 0.3/- 0.2) (3.0 0.2) (5.0) (0.7 0.1) (0.4 0.05) (2.0 0.1) (0.99 0.15) SOLDER PAD DIMENSIONS MODEL abcd w 0.220 0.096 0.035 0.035 0.420 WSLT4026 (5.6) (2.44) (0.89) (0.89) (10.6) (1) RESISTANCE VALUE THERMAL RESISTANCE HEIGHT MODEL ELEMENT MATERIAL (m) (C/W) H 1.3 11 Ni-Cr 0.119 0.008 (3.02 0.2) 2.0 16 Ni-Cr 0.114 0.008 (2.9 0.2) WSLT4026 3.0 19 Ni-Cr 0.110 0.008 (2.79 0.2) 4.0 22 Ni-Cr 0.110 0.008 (2.79 0.2) 5.0 38 Ni-Cr 0.110 0.008 (2.79 0.2) Note (1) 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 Revision: 17-Sep-2020 Document Number: 30186 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