WSL3637 Vishay Dale Power Metal Strip® Resistors, Low Value (down to 0.001 Ω), Surface Mount, 4-Terminal FEATURES • 4-Terminal design allows for 0.5 % resistance tolerance down to 0.001 Ω • 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 (down to 0.001 Ω) • All welded construction • Solid metal nickel-chrome alloy resistive element with low TCR (< 20 ppm/°C) • Solderable terminations • Low thermal EMF (< 3 μV/°C) • Very low inductance, 0.5 nH to 5 nH • Excellent frequency response to 50 MHz • AEC-Q200 qualified (1) • Compliant to RoHS Directive 2002/95/EC 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 WEIGHT (typical) g/1000 pieces WSL3637 3637 3.0 0.5 and 1.0 0.001 to 0.01 274.3 TECHNICAL SPECIFICATIONS PARAMETER UNIT RESISTOR CHARACTERISTICS ppm/°C ± 75 for 0.001 Ω to 0.0029 Ω, ± 50 for 0.003 Ω to 0.010 Ω Operating temperature range °C - 65 to + 170 Maximum working voltage V (P x R)1/2 Temperature coefficient GLOBAL PART NUMBER INFORMATION Global Part Numbering example: WSL36375L000FTA (preferred part numbering format) W S L 3 6 3 7 5 L 0 0 0 F T A GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING CODE SPECIAL WSL3637 L = mΩ* R = Decimal 5L000 = 0.005 Ω R0100 = 0.01 Ω D = ± 0.5 % F = ± 1.0 % EA = Lead (Pb)-free, tape/reel EK = Lead (Pb)-free, bulk (Dash number) (up to 2 digits) From 1 to 99 as applicable TA = Tin/lead, tape/reel (R86) BA = Tin/lead, bulk (B43) * Use “L” for resistance values < 0.01 Ω Historical Part Numbering example: WSL3637 0.005 Ω 1 % R86 (will continue to be accepted) WSL3637 0.005 Ω 1% R86 HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING CODE * Pb containing terminations are not RoHS compliant, exemptions may apply ** Please see document “Vishay Material Category Policy”: www.vishay.com/doc?99902 www.vishay.com 372 For technical questions, contact: [email protected] Document Number: 30099 Revision: 10-Dec-10 WSL3637 Power Metal Strip® Resistors, Low Value (down to 0.001 Ω), Surface Mount, 4-Terminal Vishay Dale DIMENSIONS H A B L W T I c d a b DIMENSIONS in inches (millimeters) MODEL RESISTANCE RANGE (Ω) 0.002 to 0.01 WSL3637 0.001 to 0.0019 W L H T A B 0.370 ± 0.010 (9.40 ± 0.254) 0.360 ± 0.010 (9.14 ± 0.254) 0.025 ± 0.010 (0.635 ± 0.254) 0.086 ± 0.010 (2.18 ± 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) SOLDER PAD DIMENSIONS in inches (millimeters) MODEL a b c d l 0.116 (2.95) 0.168 (4.27) 0.390 (9.91) 0.390 (9.91) 0.066 (1.68) 0.066 (1.68) 0.024 (0.610) 0.024 (0.610) 0.178 (4.52) 0.074 (1.88) Rated Power in % WSL3637 RESISTANCE RANGE (Ω) 0.002 to 0.01 0.001 to 0.0019 120 100 80 60 40 20 0 - 65 - 55 - 25 0 25 Derating 50 75 100 125 150 170 70 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 min at each extreme 5 x rated power for 5 s - 65 °C for 24 h 1000 h at + 170 °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 rated power, + 70 °C, 1.5 h “ON”, 0.5 h “OFF” + 260 °C solder, 10 s to 12 s dwell, 25 mm/s emergence MIL-STD-202, method 106, 0 % power, 7a and 7b not required TEST LIMITS ± (0.5 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (1.0 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (1.0 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR PACKAGING MODEL WSL3637 TAPE WIDTH 16 mm/embossed plastic REEL DIAMETER 330 mm/13" PIECES/REEL 4000 CODE EA Note • Embossed Carrier Tape per EIA-481. Document Number: 30099 Revision: 10-Dec-10 For technical questions, contact: [email protected] www.vishay.com 373 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. 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Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21 conform to JEDEC JS709A standards. Revision: 02-Oct-12 1 Document Number: 91000