WSLP...18
www.vishay.com
Vishay Dale
Power Metal Strip® Resistors, Very High Power (1 W),
Low Value (Down to 0.005 ), Surface Mount
FEATURES
• Very high power to foot print size ratio (1 W in
0805 / 2 W in 1206 package)
• All welded construction of the Power Metal
Strip® resistors is ideal for all types of current
sensing, voltage division and pulse applications
• Proprietary processing technique produces
extremely low resistance values (down to
0.005 )
• Sulfur resistance by construction that is
unaffected by high sulfur environments
• Solid metal nickel-chrome or manganese- copper alloy
resistive element with low TCR (< 20 ppm/°C)
• Very low inductance 0.5 nH to 5 nH
LINKS TO ADDITIONAL RESOURCES
• Excellent frequency response to 50 MHz
3D 3D
3D Models
• Low thermal EMF (< 3 μV/°C)
Design Tools
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
SIZE
POWER RATING
P70 °C
W
TOLERANCE
±%
WSLP0805...18
0805
1.0
1.0, 5.0
0.005 to 0.01
4.8
WSLP1206...18
1206
2.0
1.0, 5.0
0.005 to 0.012
16.2
RESISTANCE
VALUE RANGE
WEIGHT
(typical)
g/1000 pieces
GLOBAL PART NUMBER INFORMATION
Global Part Numbering Example: WSLP0805R0100FEA18
W
S
L
P
0
8
0
5
R
0
1
0
0
F
E
A
1
8
GLOBAL
MODEL
(8 digits)
RESISTANCE VALUE (1)
(5 digits)
TOLERANCE CODE
(1 digit)
PACKAGING CODE (2)
(2 digits)
SPECIAL (3)
(up to 2 digits)
WSLP0805
WSLP1206
L = m*
R = decimal
5L000 = 0.005
R0100 = 0.01
F = ± 1.0 %
J = ± 5.0 %
EA = lead (Pb)-free, tape / reel
EK = lead (Pb)-free, bulk pack
18 = “high power”
option
* Use “L” for resistance
values < 0.01
Notes
(1) WSL marking (www.vishay.com/doc?30327); WSL decade values (www.vishay.com/doc?30117)
(2) EB (lead (Pb)-free) is a non-standard packaging code designated for 1000 piece reels. The non-standard packaging code is identical to our
standard EA (lead (Pb)-free), except that it has a package quantity of 1000 pieces
(3) Follow link for customization capabilities: www.vishay.com/doc?48163
Revision: 01-Oct-2020
Document Number: 30298
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
WSLP...18
www.vishay.com
Vishay Dale
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
RESISTOR CHARACTERISTICS
± 110 for 5 m to 6.9 m
Temperature coefficient (1)
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
± 75 for 7 m to 12 m
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
DIMENSIONS
H
l
b
W
a
T
L
Typical sensing traces
Notes
• 3D models available: www.vishay.com/doc?30306
• Surface mount solder profile recommendations: www.vishay.com/doc?31052
WSLP0805...18
0.005 to 0.01
L
W
0.080 ± 0.010
(2.03 ± 0.254)
0.050 ± 0.010
(1.27 ± 0.254)
H
T
0.013 ± 0.010 0.015 ± 0.010
(0.330 ± 0.254) (0.381 ± 0.254)
0.002 to 0.0059
0.126 ± 0.010
(3.20 ± 0.254)
0.063 ± 0.010
(1.60 ± 0.254)
0.025 ± 0.010 0.025 ± 0.010
(0.635 ± 0.254) (0.635 ± 0.254)
WELDED CONSTRUCTION 1206
2
3
l
0.040
(1.02)
0.050
(1.27)
0.020
(0.50)
0.062
(1.57)
0.070
(1.78)
0.030
(0.76)
CLAD CONSTRUCTION 0805
1 Resistive element:
solid metal nickel-chrome
or manganese-copper
alloy resistive element with
low TCR (< 20 ppm/°C)
4
b
0.020 ± 0.010
(0.508 ± 0.254)
0.006 to 0.012
1
a
0.041 ± 0.010
(1.04 ± 0.254)
0.001 to 0.0019
WSLP1206...18
SOLDER PAD DIMENSIONS
in inches (millimeters)
DIMENSIONS in inches (millimeters)
RESISTANCE
RANGE ()
MODEL
2 Plated terminal: solid copper,
100 % Sn (100 μ" min.) with
100 % Ni (20 μ" min.) under
layer finish
3 Terminal / element weld
1 Resistive element: Ni-Cr
4
2 Terminal: solid copper,
100 % Sn (100 μ" min.) with
100 % Ni (20 μ" min.) under
layer finish
3 Terminal to element weld
1
2
3
4 High temperature encapsulant:
“siliconized polyester”
coating material
4 Silicone coating with ink print
Revision: 01-Oct-2020
Document Number: 30298
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
WSLP...18
www.vishay.com
Vishay Dale
Rated Power in %
DERATING
PULSE CAPABILITY
120
100
click to get started
80
60
40
US
ILL
20
0
-65 -50
-25
0
25
50
70
100
125
E
IV
AT
R
T
ES
OS
P
R
PU
LY
ON
150 170
Ambient Temperature in °C
www.vishay.com/resistors/power-metal-strip-calculator
PERFORMANCE
TEST
CONDITIONS OF TEST
TEST LIMITS
Thermal shock
-55 °C to +150 °C, 1000 cycles, 15 min at each extreme
± 0.5 %
Short time overload
Refer to link for short time overload performance and pulse capability;
www.vishay.com/resistors/power-metal-strip-calculator/
± 1.0 %
Low temperature operation
-65 °C for 24 h
± 0.5 %
High temperature exposure
1000 h at +170 °C
± 1.0 %
Bias humidity
+85 °C, 85 % RH, 10 % bias, 1000 h
± 0.5 %
Mechanical shock
100 g’s for 6 ms, 5 pulses
± 0.5 %
Vibration
Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h
± 0.5 %
Load life
1000 h at 70 °C, 1.5 h “ON”, 0.5 h “OFF”
± 1.0 %
Resistance to solder heat
+260 °C solder, 10 s to 12 s dwell, 25 mm/s emergence
± 0.5 %
Moisture resistance
MIL-STD-202, method 106, 0 % power, 7b not required
± 0.5 %
PACKAGING
REEL
MODEL
TAPE WIDTH
DIAMETER
PIECES/REEL
CODE
WSLP0805...18
8 mm / punched paper
178 mm / 7"
5000
EA
WSLP1206...18
8 mm / punched paper
178 mm / 7"
4000
EA
Notes
• Embossed carrier tape per EIA-481-2
• Additional packaging details at www.vishay.com/doc?20051
Revision: 01-Oct-2020
Document Number: 30298
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
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Revision: 09-Jul-2021
1
Document Number: 91000