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
ηH
to 5
ηH
•
Excellent frequency response to 50 MHz
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
POWER RATING
P
70 °C
W
3.0
TOLERANCE
%
1.0
RESISTANCE RANGE
Ω
0.002 to 0.005
WSR2-3
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature Coefficient
Inductance
Operating Temperature Range
Maximum Working Voltage
Weight/1000 pieces
UNIT
ppm/°C
ηH
°C
V
g
WSR2-3
± 175
<3
- 65 to + 170
(P x
R)
1/2
169
GLOBAL PART NUMBER INFORMATION
GLOBAL PART NUMBERING: WSR23L000FEA3
W
GLOBAL MODEL
WSR2
S
R
2
3
L
0
0
0
F
E
A
3
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)
SPECIAL
3 for special
design with no
mold compound
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34
For technical questions, contact: ww2bresistors@vishay.com
Document Number: 30133
Revision: 19-Oct-07
WSR2...3
Power Metal Strip
®
Resistors, Low Value, Surface Mount
Vishay Dale
DIMENSIONS
in inches [millimeters]
(1)
H
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
0.100
[2.540]
SOLDER PAD DIMENSIONS
b
0.235
[5.969]
l
0.240
[5.080]
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 & place nozzle.
Rated Power in
%
120
100
80
60
40
20
0
- 65 - 50
- 25
0
25
50
Derating
PERFORMANCE
TEST
Thermal Shock
Short Time Overload
Low Temperature Operation
High Temperature Exposure
Bias Humidity
Mechanical Shock
Vibration
Load Life
75
100
125 150 170
Ambient Temperature in °C
70
CONDITIONS OF TEST
- 55 °C to + 150 °C, 1000 cycles, 15 min at each extreme
5 x rated power for 5 s for WSL2512 size and smaller
- 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 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
REEL
TAPE WIDTH
24 mm/Embossed Plastic
DIAMETER
330 mm/13"
PIECES/REEL
5000
CODE
EA
Note
• Embossed Carrier Tape per EIA-481-2
Document Number: 30133
Revision: 19-Oct-07
For technical questions, contact: ww2bresistors@vishay.com
www.vishay.com
35
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
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 herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
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.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 18-Jul-08
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