WSK1206...18 High Power
www.vishay.com
Vishay Dale
Power Metal Strip
®
Resistors, High Power,
Surface Mount, 4-Terminal
FEATURES
• 4-terminal design
• Ideal for all types of current sensing, voltage
division and pulse applications
• Proprietary processing technique produces
extremely low resistance values
• Sulfur resistance by construction that is
unaffected by high sulfur environments
• Durable with all-welded construction
• All welded construction
Available
Available
DESIGN SUPPORT TOOLS
Models
Available
Design Tools
click logo to get started
• Solid metal nickel-chrome or manganese-
copper resistive element with low TCR
ppm/°C)
• Low thermal EMF (< 3 μV/°C)
(< 20
Available
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
WSK1206...18
SIZE
POWER RATING
P
70 °C
W
0.5
RESISTANCE VALUE RANGE
Tol. ± 0.1 %
0.04 to 0.05
Tol. ± 0.25 %
0.02 to 0.05
Tol. ± 0.5 %
0.01 to 0.05
Tol. ± 1.0 %
0.01 to 0.05
WEIGHT (typical)
g/1000 pieces
16
1206
Notes
• Part marking: due to resistor size limitation, parts will be marked with only the resistance value
• Resistance values are available per WSL decade table (www.vishay.com/doc?30117)
TECHNICAL SPECIFICATIONS
PARAMETER
Component temperature coefficient
(including terminal)
(1)
Element TCR
(2)
Operating temperature range
Maximum working voltage
(3)
UNIT
ppm/°C
ppm/°C
°C
V
RESISTOR CHARACTERISTICS
± 35
< 20
-65 to +170
(P x
R)
1/2
Notes
(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; refer to item 1 in the construction illustration on the following page
(3)
Maximum working voltage - the WSL is not voltage sensitive, but is limited by power / energy dissipation and is also not ESD sensitive
Revision: 16-Feb-18
Document Number: 30325
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
WSK1206...18 High Power
www.vishay.com
Vishay Dale
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: WSK1206R0150FEA
W
S
K
1
2
0
6
R
0
1
5
0
F
E
A
1
8
GLOBAL MODEL
WSK1206
RESISTANCE
VALUE
R
= decimal
R0100
= 0.01
TOLERANCE CODE
B
= ± 0.1 %
C
= ± 0.25 %
D
= ± 0.5 %
F
= ± 1.0 %
PACKAGING CODE
(1)
EA
= lead (Pb)-free, tape / reel
EK
= lead (Pb)-free, bulk
SPECIAL
18
= “high power”
option
Note
(1)
Packaging code: EB (lead (Pb)-free) and TB (tin / lead) are non-standard packaging codes designating 1000 piece reels. These non-standard
packaging codes are identical to our standard EA (lead (Pb)-free) and TA (tin / lead), except that they have a package quantity of 1000 pieces.
DIMENSIONS
DIMENSIONS
in inches (millimeters)
MODEL
L
WSK1206...18
0.126 ± 0.010
(3.20 ±0.254)
W
0.063 ± 0.010
(1.60 ± 0.254)
H
0.025 ± 0.010
(0.635 ± 0.254)
T
0.020 ± 0.010
(0.508 ± 0.254)
A
0.023 ± 0.010
(0.584 ± 0.254)
B
0.018 ± 0.010
(0.457 ± 0.254)
SOLDER PAD DIMENSIONS
in inches (millimeters)
MODEL
a
WSK1206...18
0.040
(1.01)
b
0.070
(1.778)
c
0.030
(0.762)
d
0.01
(0.254)
l
0.070
(1.778)
Revision: 16-Feb-18
Document Number: 30325
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
WSK1206...18 High Power
www.vishay.com
DERATING
Rated Power in %
120
Vishay Dale
PULSE CAPABILITY
click to get started
100
80
60
40
20
0
-65 -50
U
S
LL
I
-25
0
25
50
70
100
125
150 170
VE
TI
A
TR
S
S
E
O
RP
PU
LY
ON
Ambient Temperature in °C
www.vishay.com/resistors/power-metal-strip-calculator
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
5x 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 %)
R
± (0.5 %)
R
± (0.5 %)
R
± (1.0 %)
R
± (0.5 %)
R
± (0.5 %)
R
± (0.5 %)
R
± (1.0 %)
R
± (0.5 %)
R
± (0.5 %)
R
PACKAGING
REEL
MODEL
TAPE WIDTH
WSK1206...18
8 mm/embossed plastic
DIAMETER
178 mm/7"
PIECES/REEL
4000
CODE
EA
Notes
• Embossed carrier tape per EIA-481
• Wirewound, Metal Film, and Power Metal Strip
®
Packaging (www.vishay.com/doc?20051)
Revision: 16-Feb-18
Document Number: 30325
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
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.
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 in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
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,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
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.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk.
Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
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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. Product names and markings noted herein may be trademarks of their respective owners.
© 2017 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED
Revision: 08-Feb-17
1
Document Number: 91000
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