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
to 0.25
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@vishaypg.com
For better performances, please contact application
engineering
INTRODUCTION
The VCS301 and VCS302 offer precision resistors as low as
5 m 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
< R < 0.1
0.1
R < 0.25
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
0.01
0.05
0.1
to
to
< 0.01
< 0.05
< 0.1
± 15 ppm/°C
± 10 ppm/°C
± 5 ppm/°C
± 3 ppm/°C
to
to
< 0.25
* Pb containing materials are not RoHS compliant, exemptions may apply
Document Number: 63152
Revision: 29-Mar-10
For any questions, contact:
foil@vishaypg.com
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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
R
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
R
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)
Moisture Resistance
Low Temperature Storage
(24 h at - 55 °C)
Shock
(Specified Pulse)
Vibration
(High Frequency)
Resistance Tolerance
Thermal EMF
Weight
Load Life
(Rated Power, + 25 °C, 2000 h)
Notes
1.
R’s
plus additional 0.0005
for measurement error
2. All measurements done in free air
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For any questions, contact:
foil@vishaypg.com
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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: 29-Mar-10
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
=
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
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
Note
(1)
For non-standard requests, please contact application engineering
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Document Number: 63152
Revision: 29-Mar-10
For any questions, contact:
foil@vishaypg.com
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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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Vishay Precision Group, Inc.
Disclaimer
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Copyright Vishay Precision Group, Inc., 2014. All rights reserved.
Document No.: 63999
Revision: 15-Jul-2014
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