WSL2726
Vishay Dale
Power Metal Strip
®
Resistors, Low Value,
High Power, Surface Mount
FEATURES
• High power to foot print size ratio
• 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, down to 0.0005
Ω
• All welded construction
• Solid metal iron-chrome or manganese-copper alloy
resistive element with low TCR (< 20 ppm/°C)
• Very low inductance 0.5 nH to 5 nH
• Low thermal EMF (< 3 μV/°C)
• Compliant to RoHS directive 2002/95/EC
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
WSL2726
SIZE
2726
POWER RATING
P
70 °C
W
3.0
TOLERANCE
%
1.0
RESISTANCE VALUE
RANGE
Ω
0.0005 to 0.005
RESISTANCE VALUES
CURRENTLY AVAILABLE
(1)
Ω
0.0005, 0.002, 0.003, 0.004, 0.005
WEIGHT
(typical)
g/1000 pieces
420
Notes
• Power rating depends on the max. temperature at the solder point, component placement density and the substrate material.
• Part marking: Model, value, tolerance, date code.
(1)
Other values may be available, contact factory.
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature coefficient
Operating temperature range
Maximum working voltage
UNIT
ppm/°C
°C
V
RESISTOR CHARACTERISTICS
± 75 over temperature of + 20 °C to + 60 °C
- 65 to + 170
(P x
R)
1/2
GLOBAL PART NUMBER INFORMATION
Global Part Numbering: WSL2726L5000FEA (WSL2726, 0.0005
Ω,
± 1 %)
W
S
L
2
7
2
6
L
5
0
0
0
F
E
A
SPECIAL
(Dash number)
(Up to 2 digits)
From
1 to 99
as
applicable
GLOBAL MODEL
WSL2726
RESISTANCE VALUE
L
= mΩ
L5000
= 0.0005
Ω
2L000
= 0.0020
Ω
3L000
= 0.0030
Ω
4L000
= 0.0040
Ω
5L000
= 0.0050
Ω
TOLERANCE CODE
F
= ± 1.0 %
PACKAGING CODE
EA
= Lead (Pb)-free, tape/reel
EK
= Lead (Pb)-free, bulk
** Please see document “Vishay Material Category Policy”:
www.vishay.com/doc?99902
www.vishay.com
376
For technical questions, contact:
ww2bresistors@vishay.com
Document Number: 30131
Revision: 02-Jul-10
WSL2726
Power Metal Strip
®
Resistors, Low Value,
High Power, Surface Mount
DIMENSIONS
MODEL
WSL2726
DIMENSIONS
in inches (millimeters)
L
0.272 ± 0.008
(6.9 ± 0.2)
W
0.260 + 0.012/- 0.008
(6.6 + 0.3/- 0.2)
H
0.117 ± 0.008
(3.0 ± 0.2)
R
0.193 ± 0.004
(4.9 ± 0.1)
S
0.028 ± 0.004
(0.7 ± 0.1)
T
0.016 ± 0.002
(0.4 ± 0.05)
U
0.078 ± 0.004
(2.0 ± 0.1)
Vishay Dale
W
L
MODEL
WSL2726
SOLDER PAD DIMENSIONS
in inches (millimeters)
a
0.220
(5.6)
b
0.096
(2.44)
c
0.035
(0.89)
d
0.035
(0.89)
w
0.290
(7.4)
DERATING
U
T
R
H
c
Rated Power in %
S
120
100
80
60
40
d
b
a
w
b
20
0
- 65 - 50 - 25
0
25
50
75
70
100 125 150 175
Ambient Temperature in °C
PERFORMANCE
TEST
Thermal shock
Short time overload
Low temperature operation
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
0.5 mΩ, 2 mΩ and 3 mΩ - 5 x rated power for 5 s
4 mΩ and 5 mΩ - 3 x rated power for 5 s
- 65 °C for 45 min
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 + 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, 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
WSL2726
REEL
TAPE WIDTH
16 mm/embossed plastic
DIAMETER
330 mm/13"
PIECES/REEL
1500
CODE
EA
Note
• Embossed carrier tape per EIA-481-2.
Document Number: 30131
Revision: 02-Jul-10
For technical questions, contact:
ww2bresistors@vishay.com
www.vishay.com
377
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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
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