www.vishay.com
113
300 Series
Vishay Foil Resistors
Document Number: 63018
Revision 09-Mar-05
THROUGH HOLE
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
• ISRAEL: foilsales.israel@vishay.com • FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com • AMERICAS: foilsales.usa@vishay.com
• ASIA/JAPAN: foilsales.asia@vishay.com • UK/HOLLAND/SCANDINAVIA: foilsales.eunorth@vishay.com • GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com
SALES
Bulk Metal® Foil Technology
Precision Current Sensing Resistors
FEATURES
• Low Ohmic Value: to 0.005Ω
• Temperature Coefficient of Resistance:
15ppm/°C at 0.005Ω
• Tolerance: to 5% @ 0.005Ω (See Table 1)
• Power Rating:
10 Watts at 25°C on Heat Sink**
3 Watts at + 25°C in Free Air
(Further Derating Not Necessary)
• Load Life: 0.05% ∆R @ + 25°C,
2,000 Hrs., Rated Power
• Isolated Heat Sink
The 300 Series offers precision Bulk Metal® Foil technology
resistors as low as 5 milliohms with an extremely low
15 ppm/°C temperature coefficient and unmatched long term
stability. The 4 terminal current sensing resistors, when
mounted on a heat sink, can sustain 10 watts continuously
without an appreciable change in resistance. (0.15%
maximum) The typical 50% derating of the power
specification associated with other technologies is not
necessary. A choice of lead configurations is available.
MODEL RESISTANCE STANDARD POWER RATING MAXIMUM
NUMBER RANGE RESISTANCE TOLERANCE%* AT + 25°C CURRENT
VCS301 0.005Ω0.005Ω to < 0.1Ω1% 10 Watts on
VCS302 to 0.25Ω0.1Ω to 0.25Ω0.5% Heat Sink** 15 Amps
or
VCS331 > 0.25Ω0.1% 3 Watts 5 Amp
VCS332 to 500Ωin Free Air
}
}
TABLE 1 - CHARACTERISTICS
Please specify Vishay 300 Series resistors as follows:
VCS301, VCS302
VCS331, VCS332 0R0050 1.0%
MODEL NO. RESISTANCE VALUE TOLERANCE
TABLE 2 - ORDERING INFORMATION
Product may not
be to scale
* Tighter Resistance Tolerance - per request
** Heatsink - Aluminum (6 inches length x 4 inches width x 2 inches height x 0.04 inches thick)
Document Number: 63018
Revision 09-Mar-05
www.vishay.com
114
300 Series
Vishay Foil Resistors
THROUGH HOLE
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
• ISRAEL: foilsales.israel@vishay.com • FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com • AMERICAS: foilsales.usa@vishay.com
• ASIA/JAPAN: foilsales.asia@vishay.com • UK/HOLLAND/SCANDINAVIA: foilsales.eunorth@vishay.com • GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com
SALES
Model VCS301 and VCS331 (E Lead Rectangular) Model VCS302 and VCS332 (Round Leads)
D1
D2
L1
L2
H1
H2
W1
W2
LL
LS
LT
pt
VISHAY
VCS331
0R2000 1%
B9825
D1
D2
L1
L2
H1
H2
W1
W2
LL
LS
LT
p
VISHAY
VCS332
8R2000 0.1%
B9825
MODEL L1L2H1H2W1W2LL LS LT D1D2pt
± 0.008 ± 0.008 Maximum ± 0.008 Maximum Maximum Minimum ± 0.020 ± 0.020 Nominal Nominal Nominal No
(± 0.2) (± 0.2) (± 0.2) (± 0.5) (± 0.5)
VCS301 1.340 0.701 1.063 0.197 0.210 0.087 0.216 0.689 1.083 0.138 0.040 0.040 0.016
VCS331 (34.0) (17.8) (27.0) (5.0) (5.33) (2.2) (5.5) (17.5) (27.5) (3.5) (1.0) (1.0) (0.4)
VCS302 1.34 0.701 1.024 0.197 0.210 0.087 1.00 0.689 1.083 0.138 0.040 0.032
VCS332 (34.0) (17.8) (26.0) (5.0) (5.33) (2.2) (25.4) (17.5) (27.5) (3.5) (1.0) (0.8) –
I1E1I2
E2
FIGURE 1 - DIMENSIONS in inches (millimeters) AND SCHEMATIC
(Further Derating Not Necessary)
FIGURE 2 - POWER DERATING CURVE
Bulk Metal® Foil Technology
Precision Current Sensing Resistors
+100
+75
+50
+25
0
–50 0 +50 +100 +150 +200
Ambient Temperature °C
Percent of
Rated Power
–55°C+25°C
www.vishay.com
115
300 Series
Vishay Foil Resistors
Document Number: 63018
Revision 09-Mar-05
THROUGH HOLE
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
• ISRAEL: foilsales.israel@vishay.com • FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com • AMERICAS: foilsales.usa@vishay.com
• ASIA/JAPAN: foilsales.asia@vishay.com • UK/HOLLAND/SCANDINAVIA: foilsales.eunorth@vishay.com • GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com
SALES
TEST OR CONDITION VCS301, VCS302, VCS331, VCS332
PERFORMANCE*
Maximum Ambient Temperature ± 25°C
at Rated Power
Maximum Ambient Temperature ± 150°C
at Zero Power
Temperature Coefficient ± 15ppm/°C @ 0.005 Ω (See Table below)
Thermal Shock ± 0.05%
Short Time Overload ± 0.02%
Terminal Strength ± 0.05%
High Temperature Exposure ± 0.05% (2,000 hrs. @ 150°C)
Moisture Resistance ± 0.05%
Low Temperature Storage ± 0.05%
Shock (Specified Pulse) ± 0.1%
Vibration (High Frequency) ± 0.1%
Load Life (Rated Power, + 25°C, 2,000 hrs.) ± 0.05%
Resistance Tolerance 0.1%, 0.5%, 1%, 2%, 5%
Thermal EMF 0.2µV/°C Max. (E Terminals)
Weight 8.1 Grams Maximum
Case Temperature Rise 17°C/watt** (VCS301, VCS302) – 9°C/watt** (VCS331, VCS332)
Thermal Resistance 8°C/watt** (VCS301, VCS302) – 12.5°C/watt** (VCS331, VCS332)
*∆R’s plus additional 0.0005 ohm for measurement error.
** All measurements done in free air.
(0°C to + 60°C no reference)
≥ 0.005ΩTo < 0.01Ω± 15ppm/°C
≥ 0.01ΩTo < 0.05Ω± 10ppm/°C
≥ 0.05ΩTo < 0.2Ω± 5ppm/°C
≥ 0.2ΩTo < 1Ω± 3ppm/°C
≥ 1ΩTo ≤ 10Ω± 2ppm/°C
≥ 10Ω± 1ppm/°C
TABLE 4 - TCR CHART
TABLE 3 - VISHAY VCS301, VCS302, VCS331, VCS332 PERFORMANCE
Bulk Metal® Foil Technology
Precision Current Sensing Resistors
