WSBS8518
www.vishay.com
Vishay Dale
Power Metal Strip® Battery Shunt Resistor,
Very Low Value (50 μ, 100 μ, 125 μ, and 250 μ)
FEATURES
• High power to resistor size ratio
• Proprietary processing technique produces
extremely low resistance values
• All welded construction
• Very low inductance (< 5 nH)
• Low thermal EMF (as low as < 1 μV/°C)
• AEC-Q200 qualified
• Material categorization: for definitions of
compliance please see www.vishay.com/doc?99912
ADDITIONAL RESOURCES
3D 3D
3D Models
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
SIZE
POWER RATING
P70 °C
W
TOLERANCE
±%
RESISTANCE VALUE
RANGE (1)
RESISTANCE VALUES
CURRENTLY AVAILABLE (2)
WEIGHT
(typical)
g
WSBS8518
8518
36
5, 10
50μ to 1000μ
50μ, 100μ, 125μ, 250μ
50μ = 37.9,
100μ / 125u = 36.5,
250μ = 33.7
Notes
(1) Please reference WSBS8518…34 datasheet (www.vishay.com/doc?30354) for resistance values 500 μ to 1000 μ
(2) Other values may be available, contact factory
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
RESISTOR CHARACTERISTICS
Temperature coefficient
ppm/°C
± 175 for 100 μ, 125 μ
Temperature coefficient (element material)
ppm/°C
± 20
°C
-65 to +170
μV/°C
< 1 for 50 μ and < 3 for 100 μ, 125 μ, 250 μ
A
(P/R)1/2
± 200 for 50 μ
± 110 for 250 μ
Operating temperature range
Thermal EMF
Maximum current rating
GLOBAL PART NUMBER INFORMATION
GLOBAL PART NUMBERING: WSBS8518L1250JK (WSBS8518, 0.000125 , ± 5 %, bulk pack)
W
S
B
S
8
5
1
8
L
1
2
5
0
J
K
GLOBAL MODEL
RESISTANCE VALUE
TOLERANCE CODE
PACKAGING CODE
SPECIAL
WSBS8518
L = m
L0500 = 0.000050
L1000 = 0.000100
L1250 = 0.000125
L2500 = 0.000250
J=±5%
K = ± 10 %
K = bulk pack
T = tray pack
(dash number)
(up to 2 digits)
from 1 to 99 as
applicable
Revision: 15-Nov-2019
Document Number: 30134
1
For technical questions, contact: ww2cresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
WSBS8518
www.vishay.com
Vishay Dale
DIMENSIONS in inches (millimeters)
0.078
(2.0)
0.118
(3.0)
0.492
(12.5)
2.362 (60)
0.078 (2) x 45°
CHAMFER TYP.
R 0.078 (2) REF.
A
CALIBRATION CUT
0.354
(9.0)
0.708 ± 0.008
(18)
1/2 B
Ø 0.276 (7.0)
2 PLACES
VOLTAGE TEST
POINTS
B
3.346 ± 0.015
(85.0 ± 0.4)
Rated Power in %
DERATING
TOLERANCES ON DECIMALS
.xxx ± 0.005 [.x ± 0.1]
120
100
UNLESS OTHERWISE LISTED
80
60
RESISTANCE
VALUE (μ)
ELEMENT
MATERIAL
A
REFERENCE
B
± 0.005 [± 0.13]
40
50
Mn-Cu
0.145 [3.68]
0.270 [8.71]
20
100
Mn-Cu
0.370 [9.40]
0.495 [12.57]
125
Mn-Cu
0.480 [12.19]
0.605 [15.37]
250
Mn-Cu
0.900 [22.86]
1.025 [26.04]
0
- 65 - 50 - 25
0
25
50
75
70
100 125 150 175
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 % R
Short time overload
5 x rated power for 5 s
± 0.5 % R
Low temperature storage
-65 °C for 24 h
± 0.5 % R
High temperature exposure
1000 h at +170 °C
± 1.0 % R
Bias humidity
+85 °C, 85 % RH, 10 % bias, 1000 h
± 0.5 % R
Mechanical shock
100 g’s for 6 ms, 5 pulses
± 0.5 % R
Vibration
Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h
± 0.5 % R
Load life
1000 h at +70 °C, 1.5 h “ON”, 0.5 h “OFF”
± 1.0 % R
Moisture resistance
MIL-STD-202, method 106, 0 % power, 7b not required
± 0.5 % R
Revision: 15-Nov-2019
Document Number: 30134
2
For technical questions, contact: ww2cresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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www.vishay.com
Vishay
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Revision: 01-Jan-2023
1
Document Number: 91000