VCS301, VCS302
Vishay Foil Resistors
High Precision 4-Terminal Power Current Sensing Resistors with
TCR as low as ± 3 ppm/°C Maximum, Tolerance to ± 0.5 % and Load
Life Stability ± 0.02 % (200 ppm) at 25 °C, 2000 h at Rated Power
FEATURES
•
Temperature coefficient of resistance (TCR):
down to ± 3 ppm/°C max. (see table 2)
•
Tolerance: to ± 0.5 % (see table 1)
•
Power rating (heat-sinked): 10 W
•
Load life stability: ± 0.02 % (200 ppm) at 25 °C,
2000 h at rated power
•
Resistance range: 0.005
Ω
to 0.25
Ω
•
Vishay Foil resistors are not restricted to standard values;
specific “as required” values can be supplied at no extra
cost or delivery (e.g. 0R123 vs. 0R1)
•
Non inductive, non capacitive design
•
Rise time: 1.0 ns effectively no ringing
•
Thermal EMF: 0.05 µV/°C typical
•
Voltage coefficient: < 0.1 ppm/V
•
Non inductive: 0.08 µH
•
Non hot spot design
•
Terminal finish: lead (Pb)-free or tin/lead alloy
•
Compliant to RoHS directive 2002/95/EC
•
Prototype quantities available in just 5 working days
or sooner. For more information, please contact
foil@vishay.com
•
For better performances, please contact application
engineering
INTRODUCTION
The VCS301 and VCS302 offer precision resistors as low as
5 mΩ with a temperature coefficient down to 3 ppm/°C
maximum and unmatched long term stability. The 4 terminal
current sensing resistors, when mounted on a heat sink, can
sustain 10 W continuously without an appreciable change in
resistance (0.15 % maximum). The typical 50 % power
derating specification associated with other technologies is
not necessary. A choice of lead configurations is available.
Our application engineering department is available to
advise and make recommendations. For non-standard
technical requirements and special applications, please
contact us.
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TABLE 1 - CHARACTERISTICS
MODEL NUMBER
RESISTANCE RANGE
0.005
Ω
< R < 0.1
Ω
0.1
Ω ≤
R < 0.25
Ω
TOLERANCE
(1)
±1%
VCS301, VCS302
Notes
1. Tighter tolerance is available - for more details contact application engineering
2. The lower of the two limitations (power or current) is decisive
3. Heatsink - aluminum (6" length x 4" width x 2" height x 0.04" thick)
TABLE 2 - TCR CHART (MAXIMUM)
(0 °C TO + 60 °C)
Percent of
Rated Power
≥
0.005
Ω
≥
0.01
Ω
≥
0.05
Ω
≥
0.1
Ω
to
to
< 0.01
Ω
< 0.05
Ω
< 0.1
Ω
± 15 ppm/°C
± 10 ppm/°C
± 5 ppm/°C
± 3 ppm/°C
to
to
< 0.25
Ω
* Pb containing materials are not RoHS compliant, exemptions may apply
Document Number: 63152
Revision: 05-Oct-09
For any questions, contact:
foil@vishay.com
PR
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POWER RATING
(2)
at + 25 °C
10 W on
heat sink
(3)
or
3 W in free air
MAXIMUM CURRENT
(2)
15 A
± 0.5 %
FIGURE 1 - POWER DERATING CURVE
- 55 °C
+ 100
+ 75
+ 50
+ 25
0
- 50
0
+ 50
+ 100
+ 150
+ 200
+ 25 °C
Ambient Temperature °C
(Further Derating Not Necessary)
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VCS301, VCS302
Vishay Foil Resistors
FIGURE 2 - DIMENSIONS
in inches (millimeters)
AND SCHEMATIC
Model VCS301 (E lead rectangular)
D1
L1
L2
W2
W1
Model VCS302 (round leads)
H2
VISHAY
VCS301
0R1000 1%
B9825
D2
p
LS
LT
T
LL
H1
I
I
1
E
1
MODEL
L
1
± 0.008
(± 0.20)
1.340
(34.04)
1.340
(34.04)
L
2
H
1
H
2
W
1
W
2
LL
LS
± 0.008 MAXIMUM ± 0.008 MAXIMUM MAXIMUM MINIMUM ± 0.020
(± 0.20)
(± 0.20)
(± 0.51)
0.701
(17.81)
0.701
(17.81)
1.063
(27.00)
1.024
(26.01)
0.197
(5.00)
0.197
(5.00)
0.210
(5.33)
0.210
(5.33)
0.087
(2.21)
0.087
(2.21)
0.216
(5.49)
1.000
(25.40)
0.689
(17.50)
0.689
(17.50)
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VCS301
VCS302
TABLE 3 - VISHAY VCS301, VCS302 PERFORMANCE
TEST OR CONDITION
VCS301, VCS302 PERFORMANCE
(1)
TYPICAL
ΔR
LIMITS
0.01 %
0.01 %
0.02 %
0.02 %
0.03 %
0.005 %
0.01 %
0.01 %
0.02 %
0.5 %
0.2 µV/°C max. (E terminal)
8.1 g maximum
MAXIMUM
ΔR
LIMITS
0.02 %
0.02 %
0.05 %
0.05 %
0.05 %
0.01 %
0.02 %
0.02 %
0.05 %
1%
Thermal Shock
Short Time Overload
(5 x Rated Power for 5 s)
Terminal Strength
High Temperature Exposure
(2000 h at 150 °C)
Low Temperature Storage
(24 h at - 55 °C)
Vibration
(High Frequency)
Resistance Tolerance
Moisture Resistance
Shock
(Specified Pulse)
Load Life
(Rated Power, + 25 °C, 2000 h)
Thermal EMF
Weight
Notes
1.
ΔR’s
plus additional 0.0005
Ω
for measurement error
2. All measurements done in free air
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For any questions, contact:
foil@vishay.com
PR
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L1
L2
D1
W1
H2
H1
VISHAY
VCS302
0R1000 0.5%
B9825
D2
p
LL
W2
R
I
LS
LT
E
2
I
2
V
LT
± 0.020
(± 0.51)
1.083
(27.51)
1.083
(27.51)
D
1
D
2
P
NOMINAL NOMINAL NOMINAL
T
NO
0.138
(3.51)
0.138
(3.51)
0.040
(1.02)
0.040
(1.02)
0.040
(1.02)
0.032
(0.81)
0.016
(0.41)
-
Document Number: 63152
Revision: 05-Oct-09
VCS301, VCS302
Vishay Foil Resistors
TABLE 4 - GLOBAL PART NUMBER INFORMATION
(1)
NEW GLOBAL PART NUMBER: Y09590R25000D9L (preferred part number format)
DENOTES PRECISION
Y
VALUE
R
=
Ω
CHARACTERISTICS
0
= standard
9
= lead (Pb)-free
1 to 999
= custom
Y
0
9
5
9
0
R
PRODUCT CODE
0959
= VCS301
0943
= VCS302
RESISTANCE TOLERANCE
D
= ± 0.5 %
F
= ± 1.0 %
FOR EXAMPLE: ABOVE GLOBAL ORDER Y0959 0R25000 D 9 L:
TYPE: VCS301
VALUE: 0.25
Ω
ABSOLUTE TOLERANCE: ± 0.5 %
TERMINATION: lead (Pb)-free
PACKAGING: bulk
HISTORICAL PART NUMBER: VCS301T 0R2500 D B (will continue to be used)
VCS301
MODEL
VCS301
VCS302
T
TERMINATION
T
= lead (Pb)-free
None = tin/lead alloy
0R2500
RESISTANCE VALUE
0.25
Ω
Note
(1)
For non-standard requests, please contact application engineering
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Document Number: 63152
Revision: 05-Oct-09
For any questions, contact:
foil@vishay.com
PR
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2
5
0
0
0
D
9
L
PACKAGING
L
= bulk pack
D
B
TOLERANCE
D
= ± 0.5 %
F
= ± 1.0 %
PACKAGING
B
= bulk pack
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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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