WSR2/3 Series Datasheet

Vishay Dale

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Datasheet

WSR
www.vishay.com Vishay Dale
Revision: 09-Jan-2019 1Document Number: 30101
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
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
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
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 WSR3 requires a minimum of 1050 sq. mil. circuit traces connecting to the recommended solder pad
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
click logo to get started
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 %
WSR2 4527 2.0 0.005 to 1.0 0.001 to 1.0 440
WSR3 4527 3.0 (1) 0.005 to 0.2 0.001 to 0.2 440
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: WSR25L000FEA (visit www.vishay.net Vishay Dale parts numbering manual for all options)
GLOBAL MODEL RESISTANCE VALUE (1) TOLERANCE CODE PACKAGING CODE (2) SPECIAL (3)
WSR2
WSR3
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
(dash number)
(up to 2 digits)
from 1 to 99 as
applicable
TA = tin/lead, tape/reel (R86)
BA = tin/lead, bulk (B43)
R25L 00F0WS AE
WSR
www.vishay.com Vishay Dale
Revision: 09-Jan-2019 2Document Number: 30101
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?30336
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 WSR2 AND WSR3 RESISTOR CHARACTERISTICS
Temperature coefficient
TCR measured from -55 °C to
150 °C
ppm/°C
± 75 for 0.010 to 1.0
± 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
WSR2,
WSR3
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)
abc l
0.155
(3.94)
0.230
(5.84)
0.020
(0.51)
0.205
(5.21)
W
L
T
W1
H
I
a
b
l
a
b
c
c
a
WSR
www.vishay.com Vishay Dale
Revision: 09-Jan-2019 3Document Number: 30101
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
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
click to get started
PERFORMANCE
TEST CONDITIONS OF TEST
TEST LIMITS
WSR2 WSR3
Thermal shock -55 °C to +150 °C, 1000 cycles, 15 min at each extreme ± 0.5 % + 0.0005
± 0.5 % + 0.0005
Short time overload WSR2: 5x rated power for 5 s
WSR3: 4x rated power for 5 s ± 0.5 % + 0.0005
± 2.0 % + 0.0005
Low temperature storage -65 °C for 24 h ± 0.5 % + 0.0005
± 0.5 % + 0.0005
High temperature
exposure 1000 h at +275 °C ± 1.0 % + 0.0005
± 1.0 % + 0.0005
Bias humidity +85 °C, 85 % RH, 10 % bias, 1000 h ± 0.5 % + 0.0005
± 0.5 % + 0.0005
Mechanical shock 100 g’s for 6 ms, 5 pulses ± 0.5 % + 0.0005
± 0.5 % + 0.0005
Vibration Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h ± 0.5 % + 0.0005
± 0.5 % + 0.0005
Load life 1000 h at rated power, +70 °C, 1.5 h “ON”, 0.5 h “OFF” ± 1.0 % + 0.0005
± 2.0 % + 0.0005
Resistance to solder heat +260 °C solder, 10 s to 12 s dwell, 25 mm/s emergence ± 0.5 % + 0.0005
± 0.5 % + 0.0005
Moisture resistance MIL-STD-202, method 106, 0 % power, 7a and 7b not
required ± 0.5 % + 0.0005
± 0.5 % + 0.0005
PACKAGING (1)
MODEL
REEL
TAPE WIDTH DIAMETER PIECES/REEL CODE
WSR2 and WSR3 24 mm/embossed plastic 330 mm/13" 1500 EA
Legal Disclaimer Notice
www.vishay.com Vishay
Revision: 08-Feb-17 1Document Number: 91000
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,
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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.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
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