WSLP3921, WSLP5931
Vishay Dale
Power Metal Strip
®
Resistors, Very High Power (to 10 W)
Low Value (Down to 0.0003
Ω),
Surface Mount
FEATURES
• Ideal for all types of current sensing, voltage
division and pulse applications including
switching
and
linear
power
supplies,
instruments, power amplifiers
• Proprietary processing technique produces
extremely low resistance values, down to
0.0003
Ω
• Specially selected and stabilized materials allow
for high power rating (to 10 W)
• All welded construction
• Solid metal iron-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 available
(1)
• Compliant to RoHS Directive 2002/95/EC
Note
(1)
Flame retardance test may not be applicable to some resistor
technologies.
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
WSLP3921
WSLP3921
WSLP5931
WSLP5931
SIZE
3921
3921
5931
5931
POWER RATING
P
70 °C
W
5.0
9.0
7.0
10.0
TOLERANCE
%
1.0, 5.0
1.0, 5.0
1.0, 5.0
1.0, 5.0
RESISTANCE VALUE
RANGE
Ω
2m to 4m
0.5m to 1m
1m to 3m
0.3m to 0.5m
RESISTANCE VALUES
CURRENTLY AVAILABLE
(2)
Ω
2m, 3m, 4m
0.5m, 1m
1m, 2m, 3m
0.3m, 0.5m
WEIGHT
(typical)
g/1000 pieces
281
281
398
398
Note
(2)
Other values may be available, contact factory.
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature coefficient
Operating temperature range
Maximum continuous current
UNIT
ppm/°C
°C
A
RESISTOR CHARACTERISTICS
± 175 for 0.3 mΩ and 0.5 mΩ, ± 75 for 1 mΩ to 4 mΩ
- 65 to + 170
(P/R)
1/2
GLOBAL PART NUMBER INFORMATION
Global Part Numbering: WSLP39212L000FEA
W
S
L
P
3
9
2
1
2
L
0
0
0
F
E
A
SPECIAL
Reserved for
future specials
GLOBAL MODEL
WSLP3921
WSLP5931
RESISTANCE VALUE
L
= mΩ
2L000
= 0.002
Ω
TOLERANCE CODE
F
= ± 1.0 %
J
= ± 5.0 %
PACKAGING CODE
EA
= Lead (Pb)-free, tape/reel
EK
= Lead (Pb)-free, bulk
** Please see document “Vishay Material Category Policy”:
www.vishay.com/doc?99902
www.vishay.com
1
For technical questions, contact:
ww2bresistors@vishay.com
Document Number: 30176
Revision: 18-Nov-10
WSLP3921, WSLP5931
Power Metal Strip
®
Resistors, Very High Power (to 10 W)
Low Value (Down to 0.0003
Ω),
Surface Mount
DIMENSIONS
Vishay Dale
H
L
D
W
T
I
b
d
MODEL
WSLP3921
WSLP5931
DIMENSIONS
in inches (millimeters)
L
W
H
T
0.394 ± 0.010 0.205 ± 0.010
0.020
0.080 ± 0.010
(10.0 ± 0.254) (5.20 ± 0.254)
(0.5)
(2.00 ± 0.254)
0.591 ± 0.010 0.305 ± 0.010
0.020
0.157 ± 0.010
(15.0 ± 0.254) (7.75 ± 0.254)
(0.5)
(4.00 ± 0.254)
RESISTANCE
VALUE
(mΩ)
0.5
1.0
2.0
3.0
4.0
0.3
0.5
1.0
2.0
3.0
“D”
THICKNESS
(inches)
0.0300
0.0150
0.0270
0.0170
0.0130
0.0300
0.0180
0.0330
0.0155
0.0105
ELEMENT
MATERIAL
Mn-Cu
Mn-Cu
Fe-Cr
Fe-Cr
Fe-Cr
Mn-Cu
Mn-Cu
Fe-Cr
Fe-Cr
Fe-Cr
20
SOLDER PAD DIMENSIONS
in inches (millimeters)
d
b
l
0.106 ± 0.010
0.244 ± 0.010
0.220 ± 0.005
(2.70 ± 0.254)
(6.20 ± 0.254)
(5.60 ± 0.13)
0.205 ± 0.010
0.344 ± 0.010
0.220 ± 0.005
(5.20 ± 0.254)
(8.75 ± 0.254)
(5.60 ± 0.13)
Rated Power in %
GLOBAL
MODEL
WSLP3921
WSLP3921
WSLP3921
WSLP3921
WSLP3921
WSLP5931
WSLP5931
WSLP5931
WSLP5931
WSLP5931
DERATING
120
100
80
60
40
0
- 65 - 50 - 25
0
25
50
75
70
100 125 150 170
Ambient Temperature in °C
PERFORMANCE
TEST
Thermal shock
Short time overload
Low temperature operation
High temperature storage
Bias humidity
Mechanical shock
Vibration
Load life at 70 °C
Resistance to solder heat
Moisture resistance
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 45 min
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, 1.5 h “ON”, 0.5 h “OFF”
260 °C solder, 10 s to 12 s dwell, 25 mm/s emergence
MIL-STD-202, method 106, 0 % power, 7b not required
TEST LIMITS
± 0.5 %
ΔR
± 0.5 %
ΔR
± 0.5 %
ΔR
± 1.0 %
ΔR
± 0.5 %
ΔR
± 0.5 %
ΔR
± 0.5 %
ΔR
± 1.0 %
ΔR
± 0.5 %
ΔR
± 1.0 %
ΔR
PACKAGING
MODEL
WSLP3921
WSLP5931
Note
• Embossed Carrier Tape per EIA-481.
Document Number: 30176
Revision: 18-Nov-10
For technical questions, contact:
ww2bresistors@vishay.com
www.vishay.com
2
TAPE WIDTH
16 mm/embossed plastic
24 mm/embossed plastic
REEL
DIAMETER
330 mm/13"
330 mm/13"
PIECES/REEL
3000
1500
CODE
EA
EA
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
www.vishay.com
1
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