WSR High Power
www.vishay.com Vishay Dale
Revision: 11-Jul-2018 1Document Number: 31059
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
Power Metal Strip® Resistors,
Low Value (down to 0.001 ), Surface Mount
DESIGN SUPPORT TOOLS
FEATURES
• Molded high temperature encapsulation
• Improved thermal management incorporated
into design
• All welded construction of the Power Metal
Strip® resistors are ideal for all types of current
sensing, voltage division and pulse applications
• Proprietary processing technique produces
extremely low resistance values (down to
0.001 )
• 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
• Low thermal EMF (< 3 μV/°C)
• Integral heat sink not utilized for resistance values less
than 0.0075
• AEC-Q200 qualified (1)
• 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
Notes
• Part marking: DALE, model, value, tolerance, date code
(1) The WSR5 is rated at 5 W with terminal temperature maintained 120 °C
Notes
(1) WSR 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
(3) Follow link for customization capabilities: www.vishay.com/doc?48163
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Available
Models
Available
Design Tools
Available
Available
Available
Available
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL SIZE
POWER RATING
P70 °C
W
RESISTANCE VALUE RANGE
WEIGHT
(typical)
g/1000 pieces
Tol. ± 0.5 % Tol. ± 1.0 %
WSR5 4527 5.0 (1) 0.01 to 0.3 0.001 to 0.3 476
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: WSR5R0100FEA (preferred part numbering format)
(visit www.vishay.net Vishay Dale parts numbering manual for all options)
GLOBAL MODEL RESISTANCE VALUE (1) TOLERANCE CODE PACKAGING CODE (2) SPECIAL (3)
WSR5 L = m*
R = decimal
5L000 = 0.005
R0100 = 0.01
* use “L” for resistance
values < 0.01
D = ± 0.5 %
F = ± 1.0 %
J = ± 5.0 %
EA = lead (Pb)-free, tape / reel
EK = lead (Pb)-free, bulk
TA = tin / lead, tape / reel (R86)
BA = tin / lead, bulk (B43)
(dash number)
(up to 2 digits)
from 1 to 99 as
applicable
R5R0 00F1WS AE
WSR High Power
www.vishay.com Vishay Dale
Revision: 11-Jul-2018 2Document Number: 31059
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
DIMENSIONS in inches (millimeters)
Notes
• 3D models available: www.vishay.com/doc?30342
• Surface mount solder profile recommendations: www.vishay.com/doc?31052
Note
• Sensing locations are based on the construction of the part; terminals are wrapped from the outside to underneath. These options place the
sensing location nearest the temperature stable resistance element, which minimizes contact resistance and optimizes TCR
TYPICAL SENSING LAYOUT
TECHNICAL SPECIFICATIONS
PARAMETER UNIT WSR5 RESISTOR CHARACTERISTICS
Temperature coefficient ppm/°C
± 75 for 0.01 to 0.3 ; ± 110 for 0.005 to 0.0099 ;
± 300 for 0.004 to 0.0049 ± 450 for 0.003 to 0.0039 ;
± 600 for 0.002 to 0.0029 ; ± 750 for 0.001 to 0.0019
Element TCR ppm/°C < 20
Dielectric withstanding voltage VAC > 500
Insulation resistance > 109
Operating temperature range °C -65 to +275
Maximum working voltage V (P x R)1/2
MODEL
DIMENSIONS SOLDER PAD DIMENSIONS
LHTWW
1ab l
WSR5 0.455 ± 0.032
(11.56 ± 0.813)
0.095 ± 0.005
(2.41 ± 0.127)
0.100 ± 0.010
(2.54 ± 0.254)
0.275 ± 0.005
(6.98 ± 0.127)
0.215 ± 0.005
(5.46 ± 0.127)
0.155
(3.94)
0.230
(5.84)
0.205
(5.21)
W
L
T
W1
H
I
a
b
l
a
b
c
c
a
abc l
0.155
(3.94)
0.230
(5.84)
0.020
(0.51)
0.205
(5.21)
WSR High Power
www.vishay.com Vishay Dale
Revision: 11-Jul-2018 3Document Number: 31059
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
DERATING PULSE CAPABILITY
www.vishay.com/resistors/power-metal-strip-calculator
Notes
• Embossed Carrier Tape per EIA-481
(1) Additional packaging details at www.vishay.com/doc?20051
- 65 - 25 25 75 125 175 225 275
Ambient Temperature °C
70
0
20
40
60
80
100
120
Rated Power in %
I
I
L
L
L
L
U
S
T
R
A
T
A
A
I
V
E
P
U
R
R
P
P
O
S
E
E
S
S
O
O
N
L
Y
Y
L
L
LL
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PERFORMANCES
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 3x rated power for 5 s ± 2.0 %
Low temperature storage -65 °C for 24 h ± 0.5 %
High temperature exposure 1000 h at + 275 °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 ± 2.0 %
Resistance to solder heat 260 ± 3 °C 10 s to 12 s dwell, 25 mm/s emergence ± 0.5 %
Moisture resistance MIL-STD-202, method 106, 0 % power, 7a and 7b not required ± 0.5 %
PACKAGING (1)
MODEL
REEL
TAPE WIDTH DIAMETER PIECES/REEL CODE
WSR5 24 mm/embossed plastic 330 mm/13" 1500 EA
Legal Disclaimer Notice
www.vishay.com Vishay
Revision: 01-Jan-2019 1Document Number: 91000
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