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 0.003 Ω Pb-free Available • Ideal for all types of current sensing, voltage division and pulse applications including e3 switching and linear power supplies, instruments and power amplifiers • Proprietary processing technique produces RoHS* extremely low resistance values (down to COMPLIANT 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 • Lead (Pb)-free version is RoHS compliant STANDARD ELECTRICAL SPECIFICATIONS GLOBAL MODEL POWER RATING P70 °C W TOLERANCE % RESISTANCE RANGE WSL3637 3.0 0.5 and 1.0 0.001 - 0.01 Ω TECHNICAL SPECIFICATIONS PARAMETER UNIT WSL3637 ppm/°C 0.001 Ω - 0.0029 Ω = ± 75 0.003 Ω - 0.010 Ω = ± 50 Operating Temperature Range °C - 65 to + 170 Maximum Working Voltage V (P x R)1/2 Weight/1000 pieces g 274.3 Temperature Coefficient GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBERING: WSL36375L000FTA (PREFERRED PART NUMBERING FORMAT) W GLOBAL MODEL WSL3637 S L 3 6 3 VALUE L = mΩ* R = Decimal 5L000 = 0.005 Ω R0100 = 0.01 Ω * use ”L” for resistance values < 0.01 Ω 7 5 L TOLERANCE D = ± 0.5 % F = ± 1.0 % 0 0 0 F T A PACKAGING EA = Lead (Pb)-free, tape/reel EK = Lead (Pb)-free, bulk TA = Tin/lead, tape/reel (R86) BA = Ti n/lead, bulk (B43) SPECIAL (Dash Number) (up to 2 digits) From 1 - 99 as applicable HISTORICAL PART NUMBER 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 * Pb containing terminations are not RoHS compliant, exemptions may apply www.vishay.com 22 For technical questions, contact: [email protected] Document Number: 30099 Revision: 26-Mar-07 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 W L H T A B 0.002 - 0.01 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] 0.061 ± 0.010 [1.55 ± 0.254] 0.032 ± 0.010 [0.813 ± 0.254] 0.001 - 0.0019 0.370 ± 0.010 [9.40 ± 0.254] 0.360 ± 0.010 [9.14 ± 0.254] 0.025 ± 0.010 [0.635 ± 0.254] 0.138 ± 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 a Ω c d l 0.002 - 0.01 0.116 [2.95] 0.390 [9.91] 0.066 [1.68] 0.024 [0.610] 0.178 [4.52] 0.001 - 0.0019 0.168 [4.27] 0.390 [9.91] 0.066 [1.66] 0.024 [0.610] 0.074 [1.88] Rated Power in % WSL3637 b 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 CONDITIONS OF TEST TEST LIMITS Thermal Shock - 55 °C to + 150 °C, 1000 cycles, 15 min at each extreme ± (0.5 % + 0.0005 Ω) ΔR Short Time Overload 5 x Rated Power for 5 s ± (0.5 % + 0.0005 Ω) ΔR Low Temperature Storage - 65 °C for 24 h ± (0.5 % + 0.0005 Ω) ΔR High Temperature Exposure 1000 h at + 170 °C ± (1.0 % + 0.0005 Ω) ΔR Bias Humidity + 85 °C, 85 % RH, 10 % Bias, 1000 h ± (0.5 % + 0.0005 Ω) ΔR Mechanical Shock 100 g’s for 6 ms, 5 pulses ± (0.5 % + 0.0005 Ω) ΔR Vibration Frequency varied 10 to 2000 Hz in 1 min, 3 directions, 12 h ± (0.5 % + 0.0005 Ω) ΔR Load Life 1000 h at rated power, + 70 °C, 1.5 h “ON”, 0.5 h “OFF” ± (1.0 % + 0.0005 Ω) ΔR Solder Heat + 260 °C Solder, 10 - 12 s dwell, 25 mm/s emergence ± (0.5 % + 0.0005 Ω) ΔR Moisture Resistance MIL-STD-202, Method 106, 0 % power, 7a and 7b not required ± (0.5 % + 0.0005 Ω) ΔR PACKAGING MODEL WSL3637 REEL TAPE WIDTH DIAMETER PIECES/REEL CODE 16 mm/Embossed Plastic 330 mm/13" 4000 EA Note • Embossed carrier tape per EIA-481-2 Document Number: 30099 Revision: 26-Mar-07 For technical questions, contact: [email protected] www.vishay.com 23 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. 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 herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1