WSLT39214L000FEA

WSLT3921, WSLT5931 www.vishay.com Vishay Dale Power Metal Strip® Resistors, High Temperature (275 °C), Low Value (Down to 0.0001 Ω), 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 Ω • 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 • Solid metal iron-chrome or manganese-copper alloy resistive element with low TCR (< 20 ppm/°C) • Very low inductance (< 5 ηH) • Low thermal EMF (< 3 μV/°C) • AEC-Q200 qualified available (1) • Material categorization: for definitions of compliance please see www.vishay.com/doc?99912 LINKS TO ADDITIONAL RESOURCES 3D 3D 3D Models Design Tools Note (1) Flame retardance test may not be applicable to some resistor technologies STANDARD ELECTRICAL SPECIFICATIONS GLOBAL MODEL SIZE POWER RATING P70 °C W TOLERANCE % RESISTANCE VALUE RANGE Ω RESISTANCE VALUES CURRENTLY AVAILABLE (1) Ω WEIGHT (typical) g/1000 pieces WSLT3921 3921 3.0 1.0, 5.0 0.2m to 4m 0.2m, 0.3m, 0.5m, 0.7m, 1m, 1.5m, 2m, 2.5m, 3m, 4m 281 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 Ω, ± 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 GLOBAL MODEL (7 digits) RESISTANCE VALUE (1) (5 digits) TOLERANCE CODE (1 digit) PACKAGING CODE (2) (2 digits) SPECIAL (3) (up to 2 digits) WSLT3921 WSLT5931 L = mΩ 2L000 = 0.002 Ω F = ± 1.0 % J = ± 5.0 % EA = lead (Pb)-free, tape/reel Reserved for 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: 24-Aug-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 WSLT3921, WSLT5931 www.vishay.com Vishay Dale TECHNICAL SPECIFICATIONS PARAMETER RESISTOR CHARACTERISTICS WSLT3921 WSLT5931 +150 for 0.2 mΩ +300 for 0.1 mΩ (+25 °C to +170 °C) +170 for 0.3 mΩ ± 225 for 0.2 mΩ +150 for 0.5 mΩ to 1 mΩ ± 175 for 0.3 mΩ and 0.5 mΩ +50 for 1.5 mΩ to 4 mΩ ± 75 for 1 mΩ to 4 mΩ < 20 -65 to +275 (P x R)1/2 UNIT Component temperature coefficient (including terminal) (1) TCR measured from -55 °C to 150 °C ppm/°C Element TCR (2) Operating temperature range Maximum working voltage (3) ppm/°C °C V 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 I b 1 H 1 Resistive element: Fe-Cr (element material used is dependent on resistance value) 2 Terminal: solid copper L W D d 3 3 Terminal / element weld 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 MODEL WSLT3921 WSLT5931 L 0.394 ± 0.010 (10.0 ± 0.254) 0.591 ± 0.010 (15.0 ± 0.254) DIMENSIONS in inches (millimeters) W H (1) 0.205 ± 0.015 0.020 (5.20 ± 0.381) (0.5) 0.305 ± 0.015 0.020 (7.75 ± 0.381) (0.5) T 0.080 ± 0.010 (2.00 ± 0.254) 0.157 ± 0.010 (4.00 ± 0.254) SOLDER PAD DIMENSIONS in inches (millimeters) d b l 0.106 ± 0.010 0.244 ± 0.010 0.220 ± 0.005 (2.70 ± 0.254) (6.20 ± 0.254) (5.60 ± 0.13) 0.205 ± 0.010 0.344 ± 0.010 0.220 ± 0.005 (5.20 ± 0.254) (8.75 ± 0.254) (5.60 ± 0.13) Note (1) H dimension is reference only. Total height is H dimension + D thickness ± 0.010" (± 0.254 mm) GLOBAL MODEL WSLT3921 WSLT3921 WSLT3921 WSLT3921 WSLT3921 WSLT3921 WSLT3921 WSLT5931 WSLT5931 WSLT5931 WSLT5931 WSLT5931 WSLT5931 RESISTANCE VALUE (mΩ) 0.2 0.5 0.7 1.0 2.0 3.0 4.0 0.1 0.3 0.5 1.0 2.0 3.0 TYPICAL THERMAL RESISTANCE (°C/W) 2.7 5.8 6.3 10.9 12.0 20.7 22.8 1.6 3.5 5.7 7.2 13.2 19.3 “D” THICKNESS (Inches) 0.0560 0.0300 0.0205 0.0150 0.0270 0.0170 0.0130 0.0560 0.0300 0.0180 0.0330 0.0155 0.0105 ELEMENT MATERIAL Mn-Cu Mn-Cu Mn-Cu Mn-Cu Fe-Cr Fe-Cr Fe-Cr Mn-Cu-Sn Mn-Cu Mn-Cu Fe-Cr Fe-Cr 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: 24-Aug-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 WSLT3921, WSLT5931 www.vishay.com Vishay Dale DERATING - AMBIENT TEMPERATURE Axis Title PULSE CAPABILITY 10000 120 click to get started 1000 80 1st line 2nd line 2nd line Rated Power (%) 100 60 100 40 US ILL 20 VE TI A TR S SE O RP PU LY ON 10 0 -65 70 0 150 200 275 www.vishay.com/resistors/power-metal-strip-calculator Ambient Temperature (°C) DERATING - TERMINAL TEMPERATURE Axis Title Axis Title 10000 120 100 1st line 2nd line 1000 Stability < 0.5 % 60 100 40 20 1000 80 Stability < 1.0 % 1st line 2nd line Stability < 1.0 % 80 2nd line P/PNorm. (%) 100 2nd line P/PNorm. (%) 10000 120 60 Stability < 0.5 % 100 40 20 0 0 50 100 150 200 10 245 275 300 0 0 50 100 150 200 10 245 275 300 TK - Terminal Temperature (°C) TK - Terminal Temperature (°C) Example: WSLT3921 0.0005 Ω Example: WSLT5931 0.0005 Ω PERFORMANCE TEST Thermal shock Short time overload Low temperature storage High temperature exposure Bias humidity Mechanical shock Vibration Load life Resistance to solder heat Moisture resistance CONDITIONS OF TEST -55 °C to +150 °C, 1000 cycles, 15 min at each extreme Refer to link for short time overload performance and pulse capability; www.vishay.com/resistors/power-metal-strip-calculator/ -65 °C for 24 h 1000 h at +275 °C +85 °C, 85 % RH, 10 % bias, 1000 h 100 g’s for 6 ms, 5 pulses Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h 1000 h at +70 °C, 1.5 h “ON”, 0.5 h “OFF” 3x at 250 °C ± 5 °C for 30 s ± 5 s MIL-STD-202, method 106, 0 % power, 7a and 7b not required TEST LIMITS ± 1.0 % + 0.0005 Ω ± 0.5 % ± 0.5 % + 0.0005 Ω ± 1.0 % + 0.0005 Ω ± 0.5 % + 0.0005 Ω ± 0.5 % + 0.0005 Ω ± 0.5 % + 0.0005 Ω ± 1.0 % + 0.0005 Ω ± 0.5 % + 0.0005 Ω ± 0.5 % + 0.0005 Ω PACKAGING MODEL WSLT3921 WSLT5931 TAPE WIDTH 16 mm / embossed plastic 24 mm / embossed plastic REEL DIAMETER 330 mm / 13" 330 mm / 13" PIECES/REEL 3000 1500 CODE EA EA Note • Embossed carrier tape per EIA-481 Revision: 24-Aug-2021 Document Number: 30136 3 For technical questions, contact: ww2bresistors@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. 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