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
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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.
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Our application engineering department is available to
advise and make recommendations. For non-standard
technical requirements and special applications, please
contact us.
TABLE 1 - CHARACTERISTICS
MODEL NUMBER
RESISTANCE RANGE
TOLERANCE (1)
0.005 < R < 0.1
±1%
0.1 R < 0.25
± 0.5 %
VCS301, VCS302
POWER RATING (2)
at + 25 °C
MAXIMUM CURRENT (2)
10 W on
heat sink (3)
or
3 W in free air
15 A
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)
FIGURE 1 - POWER DERATING CURVE
- 55 °C
(0 °C TO + 60 °C)
to
< 0.01
± 15 ppm/°C
0.01
to
< 0.05
± 10 ppm/°C
0.05
to
< 0.1
± 5 ppm/°C
Percent of
Rated Power
0.005
+ 25 °C
+ 100
+ 75
+ 50
+ 25
0
- 50
0
+ 50
+ 100
+ 150
+ 200
Ambient Temperature °C
0.1
to
< 0.25
± 3 ppm/°C
(Further Derating Not Necessary)
* Pb containing materials are not RoHS compliant, exemptions may apply
Document Number: 63152
Revision: 29-Mar-10
For any questions, contact: foil@vishaypg.com
www.foilresistors.com
1
VCS301, VCS302
Vishay Foil Resistors
FIGURE 2 - DIMENSIONS in inches (millimeters) AND SCHEMATIC
Model VCS302 (round leads)
W2
L1
L2
D1
L1
L2
W1
H2
W2
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Model VCS301 (E lead rectangular)
D1
W1
H2
VISHAY
VCS301
0R1000 1%
B9825
H1
H1
D2
LL
D2
LL
p
T
p
VISHAY
VCS302
0R1000 0.5%
B9825
LS
R
I
LT
LS
I
LT
I1
E1
E2
I2
V
L1
± 0.008
(± 0.20)
L2
H1
H2
W1
W2
LL
LS
± 0.008 MAXIMUM ± 0.008 MAXIMUM MAXIMUM MINIMUM ± 0.020
(± 0.20)
(± 0.20)
(± 0.51)
LT
± 0.020
(± 0.51)
VCS301
1.340
(34.04)
0.701
(17.81)
1.063
(27.00)
0.197
(5.00)
0.210
(5.33)
0.087
(2.21)
0.216
(5.49)
0.689
(17.50)
1.083
(27.51)
0.138
(3.51)
0.040
(1.02)
0.040
(1.02)
0.016
(0.41)
VCS302
1.340
(34.04)
0.701
(17.81)
1.024
(26.01)
0.197
(5.00)
0.210
(5.33)
0.087
(2.21)
1.000
(25.40)
0.689
(17.50)
1.083
(27.51)
0.138
(3.51)
0.040
(1.02)
0.032
(0.81)
-
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MODEL
D1
D2
P
NOMINAL NOMINAL NOMINAL
T
NO
TABLE 3 - VISHAY VCS301, VCS302 PERFORMANCE
TEST OR CONDITION
VCS301, VCS302 PERFORMANCE (1)
TYPICAL R LIMITS
MAXIMUM R LIMITS
Thermal Shock
0.01 %
0.02 %
Short Time Overload (5 x Rated Power for 5 s)
0.01 %
0.02 %
Terminal Strength
0.02 %
0.05 %
High Temperature Exposure (2000 h at 150 °C)
0.02 %
0.05 %
Moisture Resistance
0.03 %
0.05 %
Low Temperature Storage (24 h at - 55 °C)
0.005 %
0.01 %
Shock (Specified Pulse)
0.01 %
0.02 %
Vibration (High Frequency)
0.01 %
0.02 %
Load Life (Rated Power, + 25 °C, 2000 h)
0.02 %
0.05 %
Resistance Tolerance
0.5 %
Thermal EMF
1%
0.2 µV/°C max. (E terminal)
Weight
8.1 g maximum
Notes
1. R’s plus additional 0.0005 for measurement error
2. All measurements done in free air
www.foilresistors.com
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For any questions, contact: foil@vishaypg.com
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)
VALUE
CHARACTERISTICS
Y
R=
0 = standard
9 = lead (Pb)-free
1 to 999 = custom
Y
0
9
5
9
0
R
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DENOTES PRECISION
2
5
0
0
0
D
9
PRODUCT CODE
RESISTANCE TOLERANCE
PACKAGING
0959 = VCS301
0943 = VCS302
D = ± 0.5 %
F = ± 1.0 %
L = bulk pack
L
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
T
MODEL
VCS301
VCS302
TERMINATION
T = lead (Pb)-free
None = tin/lead alloy
0R2500
D
B
RESISTANCE VALUE
0.25
TOLERANCE
D = ± 0.5 %
F = ± 1.0 %
PACKAGING
B = bulk pack
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Note
(1) For non-standard requests, please contact application engineering
Document Number: 63152
Revision: 29-Mar-10
For any questions, contact: foil@vishaypg.com
www.foilresistors.com
3
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Document No.: 63999
Revision: 15-Jul-2014
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