WSLT2512
www.vishay.com
Vishay Dale
Power Metal Strip
®
Resistors, High Temperature (275 °C),
Low Value (Down to 0.01
Ω),
Surface Mount
FEATURES
• Ideal for all types of current sensing, voltage
division and pulse applications including
switching and linear power supplies,
instruments and power amplifiers
• Proprietary processing technique produces
extremely low resistance values
• All welded construction of the Power Metal
Strip
®
resistors are ideal for all types of current
sensing,
voltage
division
and
pulse
applications
• Sulfur resistance by construction that is
unaffected by high sulfur environments
• Specially selected and stabilized materials allow for high
temperature derating (to +275 °C)
• Solid metal nickel-chrome alloy resistive element with low
TCR (< 20 ppm/°C)
• Very low inductance (< 5 nH)
• Excellent frequency response to 50 MHz
• Low thermal EMF (< 3 μV/°C)
• AEC-Q200 qualified
(1)
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
LINKS TO ADDITIONAL RESOURCES
D
D
3
3
3D Models
Design Tools
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
WSLT2512
SIZE
2512
POWER RATING
P
70 °C
W
1.0
(1)
TOLERANCE
±%
0.5, 1.0
RESISTANCE
VALUE RANGE
Ω
0.01 to 0.50
WEIGHT
(typical)
g/1000 pieces
63.6
Notes
• Part marking: DALE, value, tolerance code
(1)
For values above 0.1
Ω
derate linearly to 80 % rated power at 0.5
Ω
TECHNICAL SPECIFICATIONS
PARAMETER
Component temperature coefficient
(including terminal)
(1)
measured from
-55 °C to +150 °C
Element TCR
(2)
Operating temperature range
Maximum working voltage
(3)
UNIT
ppm/°C
ppm/°C
°C
V
WSL RESISTOR CHARACTERISTICS
± 75
< 20
-65 to +275
(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: 29-Jun-2021
Document Number: 30121
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
WSLT2512
www.vishay.com
GLOBAL PART NUMBER INFORMATION
Global Part Numbering Example: WSLT2512R0100FEA
(visit
www.vishay.net
Vishay Dale parts numbering manual for all options)
Vishay Dale
W
S
L
T
2
5
1
2
R
0
1
0
0
F
E
A
SPECIAL
Reserved for
future specials
GLOBAL MODEL
WSLT2512
RESISTANCE VALUE
(1)
R
= decimal
R0100
= 0.01
Ω
TOLERANCE CODE
D
= ± 0.5 %
F
= ± 1.0 %
PACKAGING CODE
(2)
EA
= lead (Pb)-free, tape / reel
EK
= lead (Pb)-free, bulk
Notes
(1)
WSL marking (www.vishay.com/doc?30327)
(2)
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
in inches (millimeters)
H
l
W
T
L
a
Typical sensing traces
b
Notes
• 3D models available:
www.vishay.com/doc?30338
• Surface mount solder profile recommendations:
www.vishay.com/doc?31052
MODEL
WSLT2512
DIMENSIONS
L
0.250 ± 0.010
(6.35 ± 0.254)
W
0.125 ± 0.010
(3.18 ± 0.254)
H
0.025 ± 0.010
(0.635 ± 0.254)
T
0.030 ± 0.010
(0.762 ± 0.254)
a
0.065
(1.65)
SOLDER PAD DIMENSIONS
b
0.145
(3.68)
l
0.160
(4.06)
WELDED CONSTRUCTION
2512
1) Resistive element:
solid metal nickel-chrome
or manganese-copper
alloy resistive element with
low TCR (< 20 ppm/°C)
2) Plated terminal: Solid copper,
100 % Sn (100 μ" min.) with
100 % Ni (20 μ" min.) under
layer finish
3) Terminal / element weld
4) Silicone coating with ink print
4
1
2
3
DERATING
Rated Power in %
120
PULSE CAPABILITY
click to get started
100
80
60
40
20
0
- 65
S
L
U
IL
- 25
25
75
70
125
175
225
275
Ambient Temperature in °C
VE
TI
A
TR
S
S
E
O
RP
PU
LY
ON
www.vishay.com/resistors/power-metal-strip-calculator
Revision: 29-Jun-2021
Document Number: 30121
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
WSLT2512
www.vishay.com
Vishay Dale
PERFORMANCE
TEST
Thermal shock
Short time overload
Low temperature operation
High temperature exposure
Bias humidity
Mechanical shock
Vibration
Load life at 70 °C
Load life at 150 °C
Resistance to solder heat
Moisture resistance
CONDITIONS OF TEST
-55 °C to +150 °C, 1000 cycles, 15 min at each extreme
5 x rated power for 5 s
-65 °C for 24 h
1000 h at +275 °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, 1.5 h “ON”, 0.5 h “OFF”
1000 h, 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 %
± 0.5 %
± 0.5 %
± 1.0 %
± 0.5 %
± 0.5 %
± 0.5 %
± 1.0 %
± 1.0 %
± 0.5 %
± 1.0 %
PACKAGING
MODEL
WSLT2512
REEL
TAPE WIDTH
12 mm / embossed plastic
DIAMETER
178 mm / 7"
PIECES/REEL
2000
CODE
EA
Notes
• Embossed carrier tape per EIA-481
(1)
Additional packaging details at
www.vishay.com/doc?20051
Revision: 29-Jun-2021
Document Number: 30121
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
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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.
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Revision: 01-Jan-2021
1
Document Number: 91000
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