WSR5

WSR High Power Vishay Dale Power Metal Strip® Resistors, High Power (5 W), Low Value (down to 0.001 Ω), Surface Mount FEATURES • Molded high temperature encapsulation • Improved thermal management incorporated Pb-free Available into design • Ideal for all types of current sensing, voltage e2 division and pulse applications including switching and linear power supplies, RoHS* instrumentation, power amplifiers • Proprietary processing technique produces COMPLIANT extremely low resistance values (down to 0.001 Ω) • All welded construction • Solid metal Nickel-Chrome or Manganese-Copper alloy resistive element with low TCR (< 20 ppm/°C) • Solderable terminations • Very low inductance 0.5 nH to 5 nH • Excellent frequency response to 50 MHz • Low thermal EMF (< 3 µV/°C) • Lead (Pb)-free version is RoHS compliant • Integral heat sink not utilized for resistance values less than 0.0075 Ω STANDARD ELECTRICAL SPECIFICATIONS GLOBAL MODEL SIZE POWER RATING P70 °C W RESISTANCE RANGE Ω ± 0.5 % ±1% 0.01 - 0.3 0.001 - 0.3 WSR5 4527 5.0 (1) Note (1) The WSR5 is rated at 5 W with terminal temperature maintained ≤ 120 °C • Part Marking: DALE, Model, Value, Tolerance, Date Code TECHNICAL SPECIFICATIONS PARAMETER Temperature Coefficient Dielectric Withstanding Voltage Insulation Resistance Operating Temperature Range Maximum Working Voltage Weight/1000 pieces UNIT ppm/°C VAC Ω °C V g WSR5 0.0075 Ω to 0.0099 Ω = ± 110 0.01 Ω to 0.3 Ω = ± 75 > 500 > 109 - 65 to + 275 (P x R)1/2 476 GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBERING: WSR5R0100FTA (PREFERRED PART NUMBERING FORMAT) W GLOBAL MODEL WSR5 S R 5 R 0 1 0 0 F T A SPECIAL (Dash Number) (up to 2 digits) From 1 - 99 as applicable VALUE L = mΩ* R = Decimal 5L000 = 0.005 Ω R0100 = 0.01 Ω * use “L” for resistance values < 0.01 Ω TOLERANCE D = ± 0.5 % F = ± 1.0 % J = ± 5.0 % PACKAGING EA = Lead (Pb)-free, tape/reel EK = Lead (Pb)-free, bulk TA = Tin/lead, tape/reel (R86) BA = Tin/lead, bulk (B43) HISTORICAL PART NUMBER EXAMPLE: WSR5 0.01 Ω 1 % R86 (WILL CONTINUE TO BE ACCEPTED) WSR5 HISTORICAL MODEL 0.01 Ω RESISTANCE VALUE 1% TOLERANCE CODE R86 PACKAGING * Pb containing terminations are not RoHS compliant, exemptions may apply www.vishay.com 32 For technical questions, contact: ww2bresistors@vishay.com Document Number: 31059 Revision: 12-Jul-07 WSR High Power Power Metal Strip® Resistors, High Power (5 W), Low Value (down to 0.001 Ω), Surface Mount DIMENSIONS H Vishay Dale MODEL WSR5 DIMENSIONS in inches [millimeters] L H T 0.100 ± 0.010 [2.54 ± 0.254] W 0.275 ± 0.005 [6.98 ± 0.127] W1 0.215 ± 0.005 [5.46 ± 0.127] W W1 T L I a 0.455 ± 0.032 0.095 ± 0.005 [11.56 ± 0.813] [2.41 ± 0.127] b MODEL WSR5 SOLDER PAD DIMENSIONS in inches [millimeters] a 0.155 [3.94] b 0.230 [5.84] l 0.205 [5.21] Rated Power in % 120 100 80 60 40 20 0 - 65 - 25 25 75 70 125 175 225 275 Derating Ambient Temperature ° C 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 3 x rated power for 5 s - 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 to 2000 Hz in 1 min, 3 directions, 12 h 1000 h at 70 °C 260 ± 3 °C 10 - 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 ± (2.0 % + 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 ± (2.0 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR PACKAGING MODEL WSR5 Note • Embossed Carrier Tape per EIA-481-2 REEL TAPE WIDTH 24 mm/Embossed Plastic DIAMETER 330 mm/13" PIECES/REEL 1500 CODE EA Document Number: 31059 Revision: 12-Jul-07 For technical questions, contact: ww2bresistors@vishay.com www.vishay.com 33 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