WSL3921 and WSL5931 Vishay Dale Power Metal Strip® Resistors, Low Value, Surface Mount FEATURES • 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 • All welded construction • Solid metal Iron-chrome or Manganese-copper alloy resistive element • Very low inductance 0.5nH to 5nH • Excellent frequency response • Low thermal EMF STANDARD ELECTRICAL SPECIFICATIONS POWER RATING P70°C W TOLERANCE WSL3921 WSL5931 GLOBAL MODEL % RESISTANCE VALUES AVAILABLE mΩ WEIGHT (TYPICAL) g/1000 pcs 3.0 1.0 & 5.0 0.3, 0.5, 1, 2, 3, 4 281 5.0 1.0 & 5.0 0.2, 0.3, 0.5, 1, 2, 3 398 • Part Marking: no part marking on these parts TECHNICAL SPECIFICATIONS PARAMETER UNIT WSL RESISTOR CHARACTERISTICS ppm/°C ± 175 for 0.3mΩ and 0.5mΩ, ± 75 for 1mΩ to 4mΩ Operating Temperature Range °C - 65 / + 170 Maximum Working Voltage V (P x R)1/2 Temperature Coefficient GLOBAL PART NUMBER INFORMATION Global Part Numbering: WSL3921L5000FEA W GLOBAL MODEL WSL3637 WSL5931 www.vishay.com 206 S L 3 9 2 RESISTANCE VALUE L = Milliohm L5000 = 0.0005Ω 1 L 5 0 TOLERANCE CODE F = ± 1.0% J = ± 5.0% 0 0 F E A PACKAGING CODE EA = Lead Free, Tape/Reel EK = Lead Free, Bulk For technical questions contact: [email protected] SPECIAL (Dash Number) (up to 2 digits) From 1-99 as applicable Document Number: 30110 Revision: 29-Mar-05 WSL3921 and WSL5931 Vishay Dale Power Metal Strip® Resistors, Low Value, Surface Mount DIMENSIONS MODEL WSL3921 H WSL5931 D L DIMENSIONS in inches [millimeters] L 0.394 ± 0.010 [10.0 ± 0.254] 0.591 ± 0.010 [15.0 ± 0.254] W 0.205 ± 0.010 [5.20 ± 0.254] 0.305 ± 0.010 [7.75 ± 0.254] H 0.020 [0.5] 0.020 [0.5] T 0.080 ± 0.010 [2.00 ± 0.254] 0.157 ± 0.010 [4.00 ± 0.254] W MODEL T SOLDER PAD DIMENSIONS in inches [millimeters] WSL3921 WSL5931 I d 0.106 ± 0.010 [2.70 ± 0.254] b 0.244 ± 0.010 [6.20 ± 0.254] l 0.220 ± 0.005 [5.60 ± 0.13] 0.205 ± 0.010 [5.20 ± 0.254] 0.344 ± 0.010 [8.75 ± 0.254] 0.220 ± 0.005 [5.60 ± 0.13] b Rated Power In % d 120 100 80 60 40 20 0 -65 -50 -25 0 Derating 25 50 75 100 125 150 175 Ambient Temperature in °C 70 GLOBAL MODEL WSL3921 WSL3921 WSL3921 WSL3921 RESISTANCE VALUE mΩ 0.3 0.5 1.0 2.0 “D” THICKNESS 0.0510 0.0300 0.0150 0.0270 ELEMENT MATERIAL Mn-Cu Mn-Cu Mn-Cu Fe-Cr WSL3921 WSL3921 WSL5931 WSL5931 WSL5931 3.0 4.0 0.2 0.3 0.5 0.0170 0.0130 0.0485 0.0300 0.0180 Fe-Cr Fe-Cr Mn-Cu Mn-Cu Mn-Cu WSL5931 WSL5931 WSL5931 1.0 2.0 3.0 0.0330 0.0155 0.0105 Fe-Cr Fe-Cr Fe-Cr PERFORMANCE TEST CONDITIONS OF TEST TEST LIMITS Thermal Shock - 55°C to + 150°C, 1000 cycles, 15 minutes at each extreme ± (1.0% + 0.0005Ω) ∆R Short Time Overload 5 x rated power for 5 seconds ± (0.5% + 0.0005Ω) ∆R Low Temperature Storage - 65°C for 45 Min. ± (0.5% + 0.0005Ω) ∆R High Temperature Exposure 1000 hours at + 175°C ± (1.0% + 0.0005Ω) ∆R Bias Humidity + 85°C, 85% RH, 10% Bias, 1000 hours ± (0.5% + 0.0005Ω) ∆R Mechanical Shock 100g’s for 6 milliseconds, 5 pulses ± (0.5% + 0.0005Ω) ∆R Vibration Frequency varied 10 to 2000Hz in one minute, 3 directions, 12 hours ± (0.5% + 0.0005Ω) ∆R Load Life 1000 hours at + 70°C, 1.5 hours “ON”, 0.5 hours “OFF” ± (1.0% + 0.0005Ω) ∆R Resistance to Solder Heat + 260°C Solder, 10 - 12 second dwell, 25mm/second emergence ± (0.5% + 0.0005Ω) ∆R Moisture Resistance MIL-STD-202, Method 106, 0% power, 7a and 7b not required ± (0.5% + 0.0005Ω) ∆R PACKAGING MODEL REEL TAPE WIDTH DIAMETER PIECES/REEL CODE 16mm/Embossed Plastic 330mm/13" 3000 EA WSL5931 16mm/Embossed Plastic Embossed carrier tape per EIA-481-1A. 330mm/13" 2000 EA WSL3921 Document Number: 30110 Revision: 29-Mar-05 For technical questions contact: [email protected] www.vishay.com 207