Power Metal Strip® Resistors,
Low Value (down to 0.001 Ω), Surface Mount
www.vishay.com For technical questions, contact: ww2bresistors@vishay.com Document Number: 30100
6Revision: 12-Aug-09
WSL
Vishay Dale
FEATURES
•Ideal for all types of current sensing, voltage
division and pulse applications including
switching and linear power supplies,
instruments, power amplifiers
•Proprietary processing technique produces
extremely low resistance values (down to
0.001 Ω)
•All welded construction
•Solderable terminations
•Solid metal Nickel-Chrome or Manganese-Copper alloy
resistive element with low TCR (< 20 ppm/°C)
•Very low inductance 0.5 nH to 5 nH
•Excellent frequency response to 50 MHz
•Low thermal EMF (< 3 µV/°C)
•Compliant to RoHS directive 2002/95/EC
Notes
(1) For values above 0.1 Ω derate linearly to 80 % rated power at 0.5 Ω
• Part Marking: Value; Tolerance: Due to resistor size limitations some resistors will be marked with only the resistance value
* Pb containing terminations are not RoHS compliant, exemptions may apply
** Please see document “Vishay Material Category Policy”: www.vishay.com/doc?99902
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
POWER RATING
P70 °C
W
RESISTANCE RANGE
Ω
WEIGHT
(typical)
g/1000 pieces
± 0.5 % ± 1.0 %
WSL0603 0.1 0.01 to 0.1 0.01 to 0.1 1.9
WSL0805 0.125 0.01 to 0.2 0.01 to 0.2 4.8
WSL1206 0.25 0.006 to 0.2 0.001 to 0.2 16.2
WSL2010 0.5 0.004 to 0.5 0.001 to 0.5 38.9
WSL2512 1.0 (1) 0.003 to 0.5 0.001 to 0.5 63.6
WSL2816 2.0 0.01 to 0.1 0.01 to 0.1 118
TECHNICAL SPECIFICATIONS
PARAMETER UNIT WSL RESISTOR CHARACTERISTICS
Temperature Coefficient ppm/°C ± 275 for 1 mΩ to 2.9 mΩ, ± 150 for 3 mΩ to 4.9 mΩ
± 110 for 5 mΩ to 6.9 mΩ, ± 75 for 7 mΩ to 0.5 Ω
Operating Temperature Range °C - 65 to + 170
Maximum Working Voltage V (P x R)1/2
GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBERING: WSL25124L000FTA (PREFERRED PART NUMBERING FORMAT)
GLOBAL MODEL VALUE TOLERANCE CODE PACKAGING SPECIAL
WSL0603
WSL0805
WSL1206
WSL2010
WSL2512
WSL2816
L = mΩ*
R = Decimal
5L000 = 0.005 Ω
R0100 = 0.01 Ω
* use “L” for resistance
values < 0.01 Ω
D = ± 0.5 %
F = ± 1.0 %
J = ± 5.0 %
EA = Lead (Pb)-free, tape/reel
EK = Lead (Pb)-free, bulk
TA = Tin/lead, tape/reel (R86)
TG = Tin/lead, tape/reel (RT1)
BA = Tin/lead, bulk (B43)
(Dash Number)
(up to 2 digits)
From 1 to 99 as
applicable
HISTORICAL PART NUMBER EXAMPLE: WSL2512 0.004 Ω 1 % R86 (WILL CONTINUE TO BE ACCEPTED)
WSL2512 0.004 Ω 1 % R86
HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING
L251 4L02WS T0 FA0
Document Number: 30100 For technical questions, contact: ww2bresistors@vishay.com www.vishay.com
Revision: 12-Aug-09 7
WSL
Power Metal Strip® Resistors,
Low Value (down to 0.001 Ω), Surface Mount Vishay Dale
DIMENSIONS
Note
• Embossed carrier tape per EIA-481-1A
L
I
T
W
H
b
a
70
Derating
120
100
80
60
40
20
0
- 65 - 50 - 25 0 25 50 75 100 125 150 170
Ambient Temperature in °C
Rated Power in %
MODEL
DIMENSIONS in inches [millimeters]
RESISTANCE
RANGE
Ω
LWH T
WSL0603
0.01 to 0.1
0.060 ± 0.010
[1.52 ± 0.254]
0.030 ± 0.010
[0.76 ± 0.254]
0.013 ± 0.005
[0.330 ± 0.127]
0.015 ± 0.010
[0.381 ± 0.254]
WSL0805
0.01 to 0.2 0.080 ± 0.010
[2.03 ± 0.254]
0.050 ± 0.010
[1.27 ± 0.254]
0.013 ± 0.005
[0.330 ± 0.127]
0.015 ± 0.010
[0.381 ± 0.254]
WSL1206
0.001 to
0.0019
0.126 ± 0.010
[3.20 ± 0.254]
0.063 ± 0.010
[1.60 ± 0.254]
0.025 ± 0.010
[0.635 ± 0.254]
0.041 ± 0.010
[1.04 ± 0.254]
0.002 to
0.0059
0.126 ± 0.010
[3.20 ± 0.254]
0.063 ± 0.010
[1.60 ± 0.254]
0.025 ± 0.010
[0.635 ± 0.254]
0.025 ± 0.010
[0.635 ± 0.254]
0.006 to 0.20 0.126 ± 0.010
[3.20 ± 0.254]
0.063 ± 0.010
[1.60 ± 0.254]
0.025 ± 0.010
[0.635 ± 0.254]
0.020 ± 0.010
[0.508 ± 0.254]
WSL2010
0.001 to 0.0069 0.200 ± 0.010
[5.08 ± 0.254]
0.100 ± 0.010
[2.54 ± 0.254]
0.025 ± 0.010
[0.635 ± 0.254]
0.058 ± 0.010
[1.47 ± 0.254]
0.007 to 0.5 0.200 ± 0.010
[5.08 ± 0.254]
0.100 ± 0.010
[2.54 ± 0.254]
0.025 ± 0.010
[0.635 ± 0.254]
0.020 ± 0.010
[0.508 ± 0.254]
WSL2512
0.001 to 0.0049 0.250 ± 0.010
[6.35 ± 0.254]
0.125 ± 0.010
[3.18 ± 0.254]
0.025 ± 0.010
[0.635 ± 0.254]
0.087 ± 0.010
[2.21 ± 0.254]
0.005 to 0.0069 0.250 ± 0.010
[6.35 ± 0.254]
0.125 ± 0.010
[3.18 ± 0.254]
0.025 ± 0.010
[0.635 ± 0.254]
0.047 ± 0.010
[1.19 ± 0.254]
0.007 to 0.5 0.250 ± 0.010
[6.35 ± 0.254]
0.125 ± 0.010
[3.18 ± 0.254]
0.025 ± 0.010
[0.635 ± 0.254]
0.030 ± 0.010
[0.762 ± 0.254]
WSL2816
0.01 to 0.1 0.280 ± 0.010
[7.1 ± 0.254]
0.165 ± 0.010
[4.2 ± 0.254]
0.025 ± 0.010
[0.635 ± 0.254]
0.062 ± 0.010
[1.57 ± 0.254]
MODEL
SOLDER PAD DIMENSIONS in inches [millimeters]
RESISTANCE
RANGE
Ω
abl
WSL0603
0.01 to 0.1 0.040 [1.01] 0.040 [1.01] 0.020 [0.50]
WSL0805
0.01 to 0.2 0.040 [1.02] 0.050 [1.27] 0.020 [0.50]
WSL1206
0.001 to 0.2 0.062 [1.57] 0.070[1.78] 0.030 [0.76]
WSL2010
0.001 to 0.0069 0.093 [2.36] 0.120 [3.05] 0.055 [1.40]
0.007 to 0.5 0.055 [1.40] 0.120 [3.05] 0.130 [3.30]
WSL2512
0.001 to 0.0049 0.120 [3.05] 0.145 [3.68] 0.050 [1.27]
0.005 to 0.0069 0.083 [2.11] 0.145 [3.68] 0.125 [3.18]
0.007 to 0.5 0.065 [1.65] 0.145 [3.68] 0.160 [4.06]
WSL2816
0.01 to 0.1 0.096 [2.45] 0.185 [4.7] 0.125 [3.20]
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 Operation - 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 Hz 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
Resistance to Solder Heat + 260 °C Solder, 10 s to 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 REEL
TAPE WIDTH DIAMETER PIECES/REEL CODE
WSL0603 8 mm/Punched Paper 178 mm/7" 5000 EA
WSL0805 8 mm/Punched Paper 178 mm/7" 5000 EA
WSL1206 8 mm/Embossed Plastic 178 mm/7" 4000 EA
WSL2010 12 mm/Embossed Plastic 178 mm/7" 4000 EA
WSL2512 12 mm/Embossed Plastic 178 mm/7" 2000 EA
WSL2816 16 mm/Embossed Plastic 330 mm/13" 5000 EA
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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