WSKW0612
www.vishay.com
Vishay Dale
Power Metal Strip® Resistors, High Power,
Surface-Mount, 4-Terminal
FEATURES
• 4-terminal design
• All welded construction of the Power Metal
Strip® resistors are ideal for all types of
current sensing, voltage division, and pulse
applications
Available
• Proprietary processing technique produces
low resistance values
Available
• Solid metal nickel-chrome and manganesecopper alloy resistive element
with low TCR (< 20 ppm/°C)
• Sulfur resistance by construction that is
unaffected by high sulfur environments
LINKS TO ADDITIONAL RESOURCES
Available
• Low thermal EMF (< 3 μV/°C)
3D 3D
Design Tools
Available
• AEC-Q200 qualified (1)
3D Models
• PATENT(S): www.vishay.com/patents
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
Notes
* This datasheet provides information about parts that are RoHS-compliant and / or parts that are non-RoHS-compliant. For example, parts
with lead (Pb) terminations are not RoHS-compliant. Please see the information / tables in this datasheet for details
• Follow link to Overview of Automotive Grade Products for more details: www.vishay.com/doc?49924
(1) Flame retardance test may not be applicable to some resistor technologies
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
SIZE
POWER RATING
P70 °C
W
TOLERANCE
±%
RESISTANCE VALUE
RANGE (1)
Ω
WEIGHT
(typical)
g/1000 pieces
WSKW0612
0612
1.0
1.0, 5.0
0.5m to 5m
8.5
Note
Other values may be available, contact factory
(1)
GLOBAL PART NUMBER INFORMATION
Global Part Numbering Example: WSKW06121L000FEA (visit www.vishay.net Vishay Dale parts numbering manual for all options)
W
S
K
W
0
6
1
2
1
L
0
0
0
F
E
A
GLOBAL MODEL
(8 digits)
RESISTANCE VALUE (1)
(5 digits)
TOLERANCE CODE
(1 digit)
PACKAGING CODE (2)
(2 digits)
SPECIAL (3)
(up to 2 digits)
WSKW0612
L = mΩ
L5000 = 0.0005 Ω
5L000 = 0.005 Ω
F = ± 1.0 %
J = ± 5.0 %
EA = lead (Pb)-free, tape / reel
EK = lead (Pb)-free, bulk
(dash number)
from 1 to 99 as
applicable
Notes
(1) WSL marking (www.vishay.com/doc?30327)
(2) Packaging code: EB (lead (Pb)-free) are non-standard packaging codes designating 1000 piece reels. These non-standard packaging codes
are identical to our standard EA (lead (Pb)-free), except that they have a package quantity of 1000 pieces
(3) Follow link for customization capabilities: www.vishay.com/doc?48163
PATENT(S): www.vishay.com/patents
This Vishay product is protected by one or more United States and international patents.
Revision: 04-Oct-2021
Document Number: 30332
1
For technical questions, contact: ww2bresistors@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
WSKW0612
www.vishay.com
Vishay Dale
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
RESISTOR CHARACTERISTICS
-300 / +50 for 0.5 mΩ to 0.99 mΩ
Component temperature coefficient
(including terminal) (1)
TCR measured from -55 °C to 150 °C
ppm/°C
Element TCR (2)
ppm/°C
< 20
Operating temperature range
°C
-65 to +170
Maximum working voltage (3)
V
(P x R)1/2
± 150 for 1 mΩ and 2 mΩ
± 75 for 3 mΩ to 5 mΩ
Notes
• TCR for Current Sensing (white paper): www.vishay.com/doc?30405
(1) Component TCR - total TCR that includes the TCR effects of the resistor element and the copper terminal
(2) Element TCR - only applies to the alloy used for the resistor element
(3) Maximum working voltage - the WSL is not voltage sensitive, but is limited by power / energy dissipation and is also not ESD sensitive
DIMENSIONS
T
W
H
c
d
l
A
B
b
a
L
Note
• Surface-mount solder profile recommendations: www.vishay.com/doc?31052
DIMENSIONS in inches (millimeters)
MODEL
WSKW0612
L
W
H
T
A
B
0.060 ± 0.010
(1.50 ± 0.254)
0.120 ± 0.010
(3.05 ± 0.254)
0.018 ± 0.010
(0.457 ± 0.254)
0.015 ± 0.010
(0.381 ± 0.254)
0.020 ± 0.005
(0.51 ± 0.127)
0.020 ± 0.005
(0.51 ± 0.127)
SOLDER PAD DIMENSIONS in inches (millimeters)
MODEL
WSKW0612
a
b
c
d
l
0.040 (1.01)
0.135 (3.43)
0.030 (0.762)
0.015 (0.381)
0.030 (0.76)
4 TERMINAL KELVIN CONNECTIONS
CONSTRUCTION OUTLINE
E1
I1
E2
5
I2
2
4
Notes
• E1 and E2: voltage sense connection
• I1 and I2: current connection
Revision: 04-Oct-2021
3
1
Notes
1. Resistive element: Mn-Cu
2. Terminal: solid copper and element with 100 % Sn finish
3. Terminal to element weld
4. Laser calibration
5. High temperature encapsulant: siliconized polyester coating
material
Document Number: 30332
2
For technical questions, contact: ww2bresistors@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
WSKW0612
www.vishay.com
Vishay Dale
DERATING
Axis Title
10000
120
1000
80
1st line
2nd line
2nd line
Rated Power (%)
100
60
100
40
20
0
-65-55 -25
10
0
25
50 70 100 125 150 170
Ambient Temperature (°C)
PULSE CAPABILITY
click to get started
VE
TI
A
R
ST
U
ILL
S
SE
O
RP
PU
LY
ON
www.vishay.com/resistors/power-metal-strip-calculator
PERFORMANCE
TEST
CONDITIONS OF TEST
TEST LIMITS
TYPICAL
Thermal shock
-55 °C to +150 °C, 1000 cycles, 15 min at each extreme
± 1.0 %
0.20 %
Low temperature storage
-65 °C for 24 h
± 0.5 %
0.1 % (24 h)
High temperature exposure
2000 h at +170 °C
± 1.0 %
± 0.2 %
Bias humidity
+85 °C, 85 % RH, 10 % bias, 1000 h
± 0.5 %
0.20 %
Mechanical shock
100 g’s for 6 ms, 5 pulses
± 0.5 %
0.01 %
Vibration
Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h
± 0.5 %
0.01 %
Load life
2000 h at +70 °C, 1.5 h “ON”, 0.5 h “OFF”
± 1.0 %
-0.20 %
Resistance to solder heat
+260 °C solder, 10 s to 12 s dwell, 25 mm/s emergence
± 0.5 %
0.05 %
Moisture resistance
MIL-STD-202, method 106, 0 % power, 7b not required
± 1.0 %
0.01 %
Revision: 04-Oct-2021
Document Number: 30332
3
For technical questions, contact: ww2bresistors@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
WSKW0612
www.vishay.com
PACKAGING
Vishay Dale
(1)
REEL
MODEL
WSKW0612
TAPE WIDTH
DIAMETER
PIECES/REEL
CODE
8 mm / embossed plastic
178 mm / 7"
4000
EA
Notes
• Embossed carrier tape per EIA-481
(1) Additional packaging details at www.vishay.com/doc?20051
REEL ORIENTATION
Revision: 04-Oct-2021
Document Number: 30332
4
For technical questions, contact: ww2bresistors@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
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
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“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
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the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
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Statements regarding the suitability of products for certain types of applications are based on Vishay's knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer's responsibility to validate that a particular product
with the properties described in the product specification is suitable for use in a particular application. Parameters provided in
datasheets and / or specifications may vary in different applications and performance may vary over time. All operating
parameters, including typical parameters, must be validated for each customer application by the customer's technical experts.
Product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited
to the warranty expressed therein.
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Revision: 09-Jul-2021
1
Document Number: 91000
