WSL3637 Vishay Dale Power Metal Strip® Resistors, Low Value, Surface Mount, 4-Terminal FEATURES • 4-Terminal design allows for 0.5% resistance tolerance down to 0.003Ω • Ideal for all types of current sensing, voltage division and pulse applications including switching and linear power supplies, instruments and power amplifiers • Proprietary processing technique produces extremely low resistance values • All welded construction • Solid metal Nickel-chrome alloy resistive element • Solderable terminations • Enscapsulated with a high temperature coating • Very low inductance, .5ηH to 5ηH • Excellent frequency response STANDARD ELECTRICAL SPECIFICATIONS GLOBAL MODEL POWER RATING P70°C W TOLERANCE RESISTANCE RANGE % Ω 3.0 0.5 & 1.0 0.001 - 0.01 WSL3637 TECHNICAL SPECIFICATIONS PARAMETER UNIT WSL3637 ppm/°C 0.001Ω - 0.0299Ω = ± 75 0.003Ω - 0.010Ω = ± 50 Operating Temperature Range °C - 65 / + 170 Maximum Working Voltage V (P x R)1/2 Weight/1000 pcs g 274.3 Temperature Coefficient GLOBAL PART NUMBER INFORMATION New Global Part Numbering: WSL36375L000FEA (preferred part numbering format) W GLOBAL MODEL WSL3637 S L 3 6 3 7 VALUE L = Miliohm R = Decimal 5L000 = 0.005Ω R0100 = 0.01Ω Historical Part Number example: WSL3637 0.005Ω 5 L TOLERANCE D = ± 0.5% F = ± 1.0% 1% EA 0 0 0 F E A PACKAGING EA = Lead Free, tape/reel EK = Lead Free, Bulk TA = Tin/Lead, tape/reel (R86) BA = Tin/Lead, bulk (B43) SPECIAL (Dash Number) (up to 2 digits) From 1-99 as applicable (will continue to be accepted) WSL3637 0.005Ω 1% EA HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING Document Number: 30099 Revision: 11-Sep-04 For technical questions contact: [email protected] www.vishay.com 1 WSL3637 Vishay Dale Power Metal Strip® Resistors, Low Value, Surface Mount, 4-Terminal DIMENSIONS H A B W L T I c d a b DIMENSIONS in inches [millimeters] MODEL RESISTANCE RANGE Ω L W H T A B 0.002 - 0.01 0.370 ± 0.010 0.360 ± 0.010 0.025 ± 0.010 [9.40 ± 0.254] [9.14 ± 0.254] [0.635 ± 0.254] 0.086 ± 0.010 [2.18 ± 0.254] 0.061 ± 0.010 [1.55 ± 0.254] 0.032 ± 0.010 [0.813 ± 0.254] 0.001 - 0.0019 0.370 ± 0.010 0.360 ± 0.010 0.025 ± 0.010 [9.40 ± 0.254] [9.14 ± 0.254] [0.635 ± 0.254] 0.138 ± 0.010 [3.51 ± 0.254] 0.061 ± 0.010 [1.55 ± 0.254] 0.032 ± 0.010 [0.813 ± 0.254] WSL3637 SOLDER PAD DIMENSIONS in inches [millimeters] MODEL RESISTANCE RANGE Ω a b c d l 0.002 - 0.01 0.001 - 0.0019 0.116 [2.95] 0.168 [4.27] 0.366 [9.30] 0.366 [9.30] 0.066 [1.68] 0.066 [1.66] 0.024 [0.610] 0.024 [0.610] 0.178 [4.52] 0.074 [1.88] RATED POWER IN % WSL3637 120 100 80 60 40 20 0 -65 -55 -25 Derating 0 25 50 75 70 100 125 150 170 AMBIENT TEMPERATURE IN °C PERFORMANCE TEST Thermal Shock Short Time Overload Low Temperature Storage High Temperature Exposure Bias Humidity Mechanical Shock Vibration Load Life Solder Heat Moisture Resistance CONDITIONS OF TEST - 55°C to + 150°C, 1000 cycles, 15 minutes at each extreme 5 x Rated Power for 5 seconds - 65°C for 24 hours 1000 hours @ + 170°C + 85°C, 85% RH, 10% Bias, 1000 hours 100g’s for 6 milliseconds, 5 pulses Frequency varied 10 to 2000Hz in 1 minute, 3 directions, 12 hours 1000 hours @ rated power, +70°C, 1.5 hours “ON”, 0.5 hours “OFF” + 260°C Solder, 10-12 second dwell, 25mm/second emergence MIL-STD-202, Method 106, 0% power, 7a and 7b not required TEST LIMITS ± (0.5% + 0.0005Ω)∆R ± (0.5% + 0.0005Ω)∆R ± (0.5% + 0.0005Ω)∆R ± (1.0% + 0.0005Ω)∆R ± (0.5% + 0.0005Ω)∆R ± (0.5% + 0.0005Ω)∆R ± (0.5% + 0.0005Ω)∆R ± (1.0% + 0.0005Ω)∆R ± (0.5% + 0.0005Ω)∆R ± (0.5% + 0.0005Ω)∆R PACKAGING MODEL WSL3637 REEL TAPE WIDTH DIAMETER PIECES/REEL CODE 16mm/Embossed Plastic 330mm/13” 4000 EA Embossed carrier tape per EIA-481-2 www.vishay.com 2 For technical questions contact: [email protected] Document Number: 30099 Revision: 11-Sep-04