WSLS2512, Improved Stability Vishay Dale Improved Stability (0.25 % and 0.5 %), Power Metal Strip® Resistors Low Value (0.01 Ω to 0.1 Ω), Surface Mount FEATURES • Current sensing in high-temperature (+ 125 °C) applications • Greater stability with maximum resistance change of 0.25 % or 0.5 % through 2000 h workload • Ideal for all types of current sensing, voltage division and pulse applications including switching and linear power supplies, instruments, power amplifiers and shunts • Proprietary processing technique produces extremely low resistance values (0.01 Ω to 0.1 Ω) • All welded construction • Solid metal Nickel-Chrome resistive element with low TCR (< 20 ppm/°C) • Lead (Pb)-free construction is RoHS compliant • Very low inductance 0.5 nH to 2 nH • Excellent frequency response to 50 MHz • Low thermal EMF (< 3 µV/°C) STANDARD ELECTRICAL SPECIFICATIONS RESISTANCE RANGE Ω POWER RATING P70 °C W GLOBAL MODEL WSLS2512 1.0 ± 1.0 % WEIGHT (typical) g/1000 pieces 0.01 - 0.1 63.6 Note • Part Marking: Value, RTC/Stability code TECHNICAL SPECIFICATIONS PARAMETER UNIT WSLS2512 RESISTOR CHARACTERISTICS ppm/°C ± 75 Operating Temperature Range °C - 65 to + 170 Maximum Working Voltage V (P × R)1/2 Temperature Coefficient GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBERING: WSLS2512R0100FHEA W S L S 2 5 1 2 R 0 1 0 0 F H E A GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE RTC/STABILITY PACKAGING CODE SPECIAL WSLS2512 L = mΩ* R = Decimal 5L000 = 0.005 Ω R0100 = 0.01 Ω * use “L” for resistance value < 0.01 Ω D = ± 0.5 % F = ± 1.0 % J = ± 5.0 % G = 75 ppm, 0.25 % stability H = 75 ppm, 0.5 % stability EA = Lead (Pb)-free, tape/reel EK = Lead (Pb)-free, bulk (Dash Number) (up to 2 digits) From 1 - 99 as applicable www.vishay.com 12 For technical questions, contact: [email protected] Document Number: 30123 Revision: 06-Oct-08 WSLS2512, Improved Stability Improved Stability (0.25 % and 0.5 %), Power Metal Strip® Resistors Low Value (0.01 Ω to 0.1 Ω), Surface Mount Vishay Dale DIMENSIONS DIMENSIONS in inches [millimeters] MODEL L W H T H WSLS2512 W 0.250 ± 0.010 0.125 ± 0.010 0.025 ± 0.010 0.030 ± 0.010 [6.35 ± 0.254] [3.18 ± 0.254] [0.635 ± 0.254] [0.762 ± 0.254] T L MODEL l SOLDER PAD DIMENSIONS in inches [millimeters] a b l 0.065 0.145 0.160 [1.65] [3.68] [4.06] b WSLS2512 Rated Power in % a 120 100 80 60 40 20 0 - 65 - 50 - 25 0 25 50 75 100 125 150 170 70 Ambient Temperature in °C Derating PERFORMANCE TEST TEST LIMITS CONDITIONS OF TEST 0.25 % 0.5 % - 55 °C to + 150 °C, 1000 cycles, 15 min at each extreme ± (0.5 % + 0.005 Ω) ΔR Short Time Overload 5 x rated power for 5 s for WSL2512 size or smaller ± (0.5 % + 0.005 Ω) ΔR Low Temperature Operation - 65 °C for 45 min ± (0.5 % + 0.005 Ω) ΔR High Temperature Exposure 1000 h at + 170 °C ± (1.0 % + 0.005 Ω) ΔR Bias Humidity + 85 °C, 85 % RH, 10 % Bias, 1000 h ± (0.5 % + 0.005 Ω) ΔR Mechanical Shock 100 g’s for 6 ms, 5 pulses ± (0.5 % + 0.005 Ω) ΔR Vibration Frequency varied 10 to 2000 Hz in 1 min, 3 directions, 12 h ± (0.5 % + 0.005 Ω) ΔR Thermal Shock ± 0.25 % ΔR ± 0.5 % ΔR Load Life 2000 h at 70 °C, 1.5 h “ON”, 0.5 h “OFF” Resistance to Solder Heat + 260 °C Solder, 10 to 12 s dwell, 25 mm/s emergence ± (0.5 % + 0.005 Ω) ΔR Moisture Resistance MIL-STD-202, Method 106, 0 % power, 7b not required ± (0.5 % + 0.005 Ω) ΔR PACKAGING MODEL WSLS2512 REEL TAPE WIDTH DIAMETER PIECES/REEL CODE 12 mm/Embossed Plastic 178 mm/7" 2000 EA Note • Embossed Carrier Tape per EIA-481-2 Document Number: 30123 Revision: 06-Oct-08 For technical questions, contact: [email protected] www.vishay.com 13 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