Upgrade Superior TCR Performance With WSBE Series
WSBS8518...35
www.vishay.com
Vishay Dale
Power Metal Strip® Shunt Resistor With Sense Pins,
Low TCR (Down to < ± 10 ppm/°C),
Very Low Value (100 μΩ, 500 μΩ, and 1000 μΩ)
FEATURES
• High power to resistor size ratio
• Proprietary processing technique produces
extremely low resistance values
• Welded terminal to element construction
• Solid metal nickel-chrome alloy resistive
element with unique design for low TCR
(down to ± 10 ppm/°C)
• Very low inductance (< 5 nH)
• Low thermal EMF (as low as < 1.25 μV/°C)
LINKS TO ADDITIONAL RESOURCES • AEC-Q200 qualified
3D 3D
• PATENT(S): www.vishay.com/patents
3D Models Design Tools • Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
STANDARD ELECTRICAL SPECIFICATIONS
POWER RATING RESISTANCE VALUE RESISTANCE VALUES WEIGHT
GLOBAL TOLERANCE
SIZE P70 °C RANGE CURRENTLY AVAILABLE (1) (typical)
MODEL ±%
W Ω Ω g
WSBS8518...35 8518 36 5, 10 100μ to 1000μ 100μ 36.5
WSBS8518...35 8518 25 5, 10 100μ to 1000μ 500μ 33.9
WSBS8518...35 8518 20 5, 10 100μ to 1000μ 1000μ 31.8
Note
(1) Other values may be available, contact factory
TECHNICAL SPECIFICATIONS
PARAMETER UNIT RESISTOR CHARACTERISTICS
± 65 for 100 μΩ
Temperature coefficient ppm/°C ± 10 for 500 μΩ
± 25 for 1000 μΩ
Operating temperature range °C -65 to +170
Thermal EMF μV/°C < 1.25
Inductance nH <5
Maximum current rating A (P/R)1/2
GLOBAL PART NUMBER INFORMATION
Global Part Numbering: WSBS8518L5000JT35 (WSBS8518…35, 0.0005 Ω, ± 5 %, tray pack)
W S B S 8 5 1 8 L 5 0 0 0 J T 3 5
GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING CODE SPECIAL
WSBS8518 L = mΩ J=±5% K = bulk pack 35 = low TCR and
L1000 = 0.000100 Ω K = ± 10 % T = tray pack sense pins attached
L5000 = 0.000500 Ω
1L000 = 0.001000 Ω
PATENT(S): www.vishay.com/patents
This Vishay product is protected by one or more United States and international patents.
Revision: 03-Sep-2024 1 Document Number: 30355
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
Upgrade Superior TCR Performance With WSBE Series
WSBS8518...35
www.vishay.com
Vishay Dale
DIMENSIONS in inches (millimeters)
2.362 ± 0.012 Calibration notch
(60 ± 0.30) 0.00 to 0.16
(0.00 to 4.06)
0.130 (3.3) ref. 0.354 ± 0.010
(9 ± 0.25)
0.259 (6.6) ref. 0.708 ± 0.008
(18 ± 0.20)
0.354 (9)
ref.
0.078 x 45°
(1.98 x 45°) typ. Ø 0.276 ± 0.004
3.346 ± 0.016 (Ø 7 ± 0.10)
(85 ± 0.41)
B dimension
0.310 ± 0.016 0.078 ± 0.002 0.118 ± 0.002
(7.9 ± 0.41) (2 ± 0.05) (3.00 ± 0.05)
A dimension
Note
• Minimum pull strength of sense pins is 200 N
RESISTANCE ELEMENT A B
TOLERANCES ON DECIMALS
VALUE (μΩ) MATERIAL REFERENCE ± 0.005 (± 0.13)
.xxx ± 0.005 (.x ± 0.1)
100 Ni-Cr 0.120 (3.05) 0.135 (3.43)
500 Ni-Cr 0.615 (15.62) 0.695 (17.65) UNLESS OTHERWISE LISTED
1000 Ni-Cr 0.900 (22.86) 0.980 (24.89)
DERATING PULSE CAPABILITY
Axis Title
120 10000
get started
100
Rated Power (%)
80 1000
2nd line
2nd line
1st line
60
40 100
20
(ILLUSTRATIVE PURPOSES ONLY)
0 10
-65 -50 -25 0 25 50 70 100 125 150 175
Ambient Temperature (°C) www.vishay.com/en/resistors/joulewizard/
PERFORMANCE
TEST CONDITIONS OF TEST TEST LIMITS
Thermal shock -55 °C to +150 °C, 1000 cycles, 15 min at each extreme ± 0.5 % ΔR
Short time overload 5 x rated power for 5 s ± 0.5 % ΔR
Low temperature storage -65 °C for 24 h ± 0.2 % ΔR
High temperature exposure 1000 h at +170 °C ± 1.0 % ΔR
Bias humidity +85 °C, 85 % RH, 10 % bias, 1000 h ± 0.5 % ΔR
Mechanical shock 100 g’s for 6 ms, 5 pulses ± 0.2 % ΔR
Vibration Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h ± 0.2 % ΔR
Load life 1000 h at +70 °C, 1.5 h “ON”, 0.5 h “OFF” ± 1.0 % ΔR
Moisture resistance MIL-STD-202, method 106, 0 % power, 7b not required ± 0.2 % ΔR
Revision: 03-Sep-2024 2 Document Number: 30355
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-2025 1 Document Number: 91000
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
