WSR2...3
Vishay Dale
Power Metal Strip
®
Resistors, Low Value, 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 down to 0.002
Ω
• All welded construction
• Solid metal manganese-copper alloy resistive
element with low TCR (< 20 ppm/°C)
• Solderable terminations
• Low thermal EMF (< 3 μV/°C)
•
Very low inductance 0.5 nH to 5 nH
• Excellent frequency response to 50 MHz
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL MODEL
WSR2...3
SIZE
4022
POWER RATING
P
70 °C
W
3.0
TOLERANCE
±%
1.0
RESISTANCE
VALUE RANGE
Ω
0.002 to 0.005
WEIGHT
(typical)
g/1000 pieces
169
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature coefficient
Inductance
Operating temperature range
Maximum working voltage
UNIT
ppm/°C
nH
°C
V
RESISTOR CHARACTERISTICS
± 175
<3
- 65 to + 170
(P x
R)
1/2
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: WSR23L000FEA3
W
GLOBAL MODEL
WSR2
S
R
2
3
L
0
0
0
F
E
A
3
SPECIAL
3
for special
design with no
mold compound
RESISTANCE VALUE
L
= mΩ
2L000
= 0.002
Ω
5L000
= 0.005
Ω
TOLERANCE CODE
D
= ± 0.5 %
F
= ± 1.0 %
J
= ± 5.0 %
PACKAGING CODE
EA
= Lead (Pb)-free, tape/reel
EK
= Lead (Pb)-free, bulk
TA
=
Tin/lead, tape/reel (R86)
BA
=
Tin/lead bulk (B43)
* Pb containing terminations are not RoHS compliant, exemptions may apply
** Please see document “Vishay Material Category Policy”:
www.vishay.com/doc?99902
www.vishay.com
34
For technical questions, contact:
ww2bresistors@vishay.com
Document Number: 30133
Revision: 08-Dec-10
WSR2...3
Power Metal Strip
®
Resistors, Low Value, Surface Mount
DIMENSIONS
in inches (millimeters)
(1)
H
Vishay Dale
L
W
T
I
a
b
MODEL
WSR2...3
DIMENSIONS
L
0.400 ± 0.010
(10.16 ± 0.254)
W
0.215 ± 0.010
(5.46 ± 0.254)
H
0.029 ± 0.005
(0.737 ± 0.127)
T
0.075 ± 0.010
(1.91 ± 0.254)
a
SOLDER PAD DIMENSIONS
b
0.235
(5.969)
l
0.240
(5.080)
0.100
(2.540)
Note
(1)
0.1" x 0.1" area in the center of the resistor will be flat and free of any trim cuts to facilitate pick and place nozzle.
DERATING
Rated Power in %
120
100
80
60
40
20
0
- 65 - 50
- 25
0
25
50
75
100
125 150 170
Ambient Temperature in °C
70
PERFORMANCE
TEST
Thermal shock
Short time overload
Low temperature operation
High temperature exposure
Bias humidity
Mechanical shock
Vibration
Load life
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 + 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”
TEST LIMITS
(± 0.5 % + 0.0005
Ω) ΔR
(± 1.0 % + 0.0005
Ω) ΔR
(± 0.5 % + 0.0005
Ω) ΔR
(± 1.0 % + 0.0005
Ω) ΔR
(± 0.5 % + 0.0005
Ω) ΔR
(± 0.5 % + 0.0005
Ω) ΔR
(± 0.5 % + 0.0005
Ω) ΔR
(± 2.0 % + 0.0005
Ω) ΔR
PACKAGING
MODEL
WSR2...3
Note
• Embossed Carrier Tape per EIA-481.
Document Number: 30133
Revision: 08-Dec-10
For technical questions, contact:
ww2bresistors@vishay.com
www.vishay.com
35
REEL
TAPE WIDTH
16 mm/embossed plastic
DIAMETER
330 mm/13"
PIECES/REEL
5000
CODE
EA
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 and agree
to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and
damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay
or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to
obtain written terms and conditions regarding products designed for such applications.
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.
Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Revision: 12-Mar-12
1
Document Number: 91000
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