WSLT39212L000FEA Vishay

333 3 WSLT3921, WSLT5931 www.vishay.com Vishay Dale Power Metal Strip Resistors, High Temperature (275 C), Low Value (Down to 0.0001 ), Surface Mount FEATURES Available Ideal for all types of current sensing, voltage division and pulse applications including switching and linear power supplies, instruments, power amplifiers Proprietary processing technique produces extremely low resistance values, down to 0.0001 Specially selected and stabilized materials allow for high temperature derating (to +275 C) Sulfur resistance by construction that is unaffected by high sulfur environments All welded construction LINKS TO ADDITIONAL RESOURCES Solid metal iron-chrome or manganese-copper alloy resistive element with low TCR (< 20 ppm/C) 3D Models Design Tools Very low inductance (< 5 H) Low thermal EMF (< 3 V/C) (1) AEC-Q200 qualified available Material categorization: for definitions of compliance please see www.vishay.com/doc 99912 Note (1) Flame retardance test may not be applicable to some resistor technologies STANDARD ELECTRICAL SPECIFICATIONS POWER RATING RESISTANCE VALUE RESISTANCE VALUES WEIGHT GLOBAL TOLERANCE (1) SIZE P RANGE CURRENTLY AVAILABLE (typical) 70 C MODEL % W g/1000 pieces 0.2m, 0.3m, 0.5m, 0.7m, 1m, WSLT3921 3921 3.0 1.0, 5.0 0.2m to 4m 281 1.5m, 2m, 2.5m, 3m, 4m WSLT5931 5931 5.0 1.0, 5.0 0.3m to 3m 0.3m, 0.5m, 1m, 2m, 3m 398 Note (1) Other values may be available, contact factory GLOBAL PART NUMBER INFORMATION Global Part Numbering: WSLT39212L000FEA (WSLT3921, 0.002 , 1 %) (visit www.vishay.net Vishay Dale parts numbering manual for all options) W S L T 3 9 2 1 2 L 0 0 0 F E A (1) (2) (3) GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING CODE SPECIAL (7 digits) (5 digits) (1 digit) (2 digits) (up to 2 digits) WSLT3921 L = m F = 1.0 % EA = lead (Pb)-free, tape/reel Reserved for WSLT5931 2L000 = 0.002 J = 5.0 % EK = lead (Pb)-free, bulk future specials 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 (3) Follow link for customization capabilities: www.vishay.com/doc 48163 Revision: 23-Apr-2021 Document Number: 30136 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 WSLT3921, WSLT5931 www.vishay.com Vishay Dale TECHNICAL SPECIFICATIONS RESISTOR CHARACTERISTICS PARAMETER UNIT WSLT3921 WSLT5931 +150 for 0.2 m +300 for 0.1 m (+25 C to +170 C) Component temperature coefficient +170 for 0.3 m 225 for 0.2 m (1) (including terminal) ppm/C +150 for 0.5 m to 1 m 175 for 0.3 m and 0.5 m TCR measured from -55 C to 150 C +50 for 1.5 m to 4 m 75 for 1 m to 4 m (2) Element TCR ppm/C < 20 Operating temperature range C -65 to +275 (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 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 DIMENSIONS in inches (millimeters) CONSTRUCTION OUTLINE Typical sensing traces 1 Resistive element: Fe-Cr (element material used is dependent on resistance I b value) 1 H 2 Terminal: solid copper d 3 3 Terminal / element weld D L W 2 T Notes 3D models available: 3921 model www.vishay.com/doc 30315 5931 model www.vishay.com/doc 30317 Surface mount solder profile recommendations: www.vishay.com/doc 31052 DIMENSIONS in inches (millimeters) SOLDER PAD DIMENSIONS in inches (millimeters) MODEL L W H Tdb l 0.394 0.010 0.205 0.015 0.020 0.080 0.010 0.106 0.010 0.244 0.010 0.220 0.005 WSLT3921 (10.0 0.254) (5.20 0.381) (0.5) (2.00 0.254) (2.70 0.254) (6.20 0.254) (5.60 0.13) 0.591 0.010 0.305 0.015 0.020 0.157 0.010 0.205 0.010 0.344 0.010 0.220 0.005 WSLT5931 (15.0 0.254) (7.75 0.381) (0.5) (4.00 0.254) (5.20 0.254) (8.75 0.254) (5.60 0.13) GLOBAL RESISTANCE VALUE TYPICAL THERMAL RESISTANCE D THICKNESS ELEMENT MODEL (m ) (C/W) (Inches) MATERIAL WSLT3921 0.2 2.7 0.0560 Mn-Cu WSLT3921 0.5 5.8 0.0300 Mn-Cu WSLT3921 0.7 6.3 0.0205 Mn-Cu WSLT3921 1.0 10.9 0.0150 Mn-Cu WSLT3921 2.0 12.0 0.0270 Fe-Cr WSLT3921 3.0 20.7 0.0170Fe-Cr WSLT3921 4.0 22.8 0.0130Fe-Cr WSLT5931 0.1 1.6 0.0560 Mn-Cu-Sn WSLT5931 0.3 3.5 0.0300 Mn-Cu WSLT5931 0.5 5.7 0.0180 Mn-Cu WSLT5931 1.0 7.2 0.0330 Fe-Cr WSLT5931 2.0 13.2 0.0155 Fe-Cr WSLT5931 3.0 19.3 0.0105 Fe-Cr 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: 23-Apr-2021 Document Number: 30136 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