2R, 3R, 4R
Vishay Foil Resistors
Bulk Metal
®
Foil Technology
Molded Resistor Networks
•
Resistance range each resistor: 1
Ω
to 150 kΩ
•
TCR Tracking: to ± 0.5 ppm/°C
•
Nominal TCR each resistor: See Figures 1 and 2 in data
sheet “7 Technical Reasons to Specify Bulk Metal
®
Foil
Resistor Networks.”
•
Nominal tolerance ratio matching between resistors:
from ± 0.005 to ± 1 %
•
Absolute tolerance each resistor: ± 1.0 %, ± 0.5 %,
± 0.25 %, 0.1 %, ± 0.05 %, ± 0.02 %, ± 0.01 %, ± 0.005 %
•
Power rating: 0.25 watts per resistor
FEATURES
Product may not be to scale
Unitized Resistor Networks are comprised of Vishay S102C
elements combined and molded into single units. This
method of making networks yields some important
advantages that should be considered where space is not a
limitation and maximizing performance is important. To begin
with, the leads that emerge from the package go directly to
the resistance element (or an internal PC board), so the
possibility of thermal EMFs is very low. Next, the value range
of the elements is large (1
Ω
to 150 kΩ in a single foil
element) and they can be combined for even higher values.
Finally, these elements possess all the good features of
discrete Bulk Metal
®
Foil resistors, plus the ability to be
further sorted for TCR track and absolute match before
encapsulation. These networks make excellent voltage
dividers, bridges, and attenuators where performance and
stability are important.
TABLE 1 - TYPICAL
1)
PERFORMANCE CHARACTERISTICS
Resistance Temp Characteristic (TCR)
± 2 ppm/°C nominal
TCR Tracking To Reference Element
0.1 ppm/°C to 4 ppm/°C
4)
Max Ambient Temp at Rated Wattage
+ 125 °C
Max Ambient Temp at Zero Power
+ 175 °C
ΔR
2)
0.002 %
Thermal Shock
ΔRatio
3)
0.002 %
ΔR
0.005 %
Low Temperature Operation
ΔRatio
0.002 %
ΔR
0.002 %
Short Time Overload
ΔRatio
0.002 %
ΔR
0.001 %
Terminal Strength
ΔRatio
0.001 %
ΔR
0.002 %
Resistance to Soldering Heat
ΔRatio
0.001 %
ΔR
0.003 %
Moisture Resistance
ΔRatio
0.003 %
ΔR
0.001 %
Shock
ΔRatio
0.001 %
ΔR
0.001 %
Vibration, High Frequency
ΔRatio
0.001 %
ΔR
0.01 %
Life
0.3 W at + 125 °C
ΔRatio
0.01 %
ΔR
0.003 %
0.02 W at + 60 °C
ΔRatio
0.001 %
ΔR
0.002 %
0.05 W at + 25 °C
ΔRatio
0.001 %
0.01 %
High Temperature Exposure
ΔR
ΔRatio
0.01 %
ΔR
0.002 %
Low Temperature Storage
0.002 %
ΔRatio
Insulation Resistance
> 500 000 MΩ
Dielectric Withstanding Voltage
No Change
ΔR
< 0.1 ppm/V
5)
Voltage Coefficient
5)
ΔRatio
< 0.1 ppm/V
5)
Noise
N/A
- 40 dB (non-measurable)
Inductance
N/A
0.08 µH
Capacitance
N/A
0.5 pf
Rise Time
N/A
1 ns at 1 kΩ
Thermal EMF lead to lead
N/A
0.04 µV°C
Thermal EMF air circulation N/A
0.02 µV/°C
Thermal EMF power
N/A
0.1 µV for 20 mW
6)
ΔR
25 ppm/year
Shelf Life
ΔRatio
6)
10 ppm/year
NOTES:
1. Typical is a designer's reference that represents 85 % of
production. Most of the DR's shown are maximums. To ensure
that all typical values are maximums a "burn-in" is required.
2.
ΔR:
absolute resistance change.
3.
ΔRatio:
change in ratio between resistors within the network
package from before to after the specified test
4. Depending on construction and ratio value
5. Measured < 0.1 ppm/V and within the measurement capability of
the equipment. Voltage coefficient is “essentially zero”
6. 2 ppm when in hermetically sealed package
APPLICATIONS
•
Differential amplifiers
•
Gain defining resistors in digital voltmeters
•
Ratio arms in bridge circuits
•
Fuel metering systems
•
Heads up displays
•
Fire control systems
•
Spacecraft instrumentation
•
Naval weapons systems
•
Binary Coded Decimal Ladder Networks
•
Binary Ladders (A-D, D-A conversion, current and voltage
summing)
•
Ratio and Ratio-matching Networks
•
Bridge Networks
•
Synchro Input and Summing Networks
•
Resolver Networks
•
Linear and Linear-summing Networks
•
Decoder Networks
•
Quadrature Bridge Networks
•
Resistive Summing Networks
www.foilresistors.com
1
For any questions, contact:
foil@vishaypg.com
Document Number: 63044
Revision: 24-Mar-10
2R, 3R, 4R
Vishay Foil Resistors
FIGURE 1 - VISHAY MODEL 300198 NETWORK
APPLICATION EXAMPLE
FIGURE 2 - POWER DERATING CURVE
200 %
Percent of Rated Power at + 125 °C
- 55 °C
+ 70 °C
Double Rated Power
175 %
150 %
125 %
100 %
75 %
50 %
25 %
0
- 75 - 50 - 25
0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 + 200
Ambient Temperature (°C)
Safe operation
for < 150 ppm
ΔR
after 2000
hours load-life
R1
E1
R2
E2
R3
R4
E3
A
Rated Power
FIGURE 3 - MOLDED 2R, 3R, 4R RESISTOR NETWORK DIMENSIONS AND CIRCUIT DESIGN
in inches (millimeters)
MODEL 300190
0.575 (14.605) Max
0.160 Max
(4.06)
MODEL 300191
0.575 (14.605) Max
0.160 Max
(4.06)
R1
0.413
(10.49)
Max
R2
0.413
(10.49)
Max
R1
R2
1
2
3
0.250
(6.35)
1
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
2
3
1
0.150
(3.81)
2 3
4
0.150
(3.81)
1
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
2
3
4
0.150
(3.81)
0.100
(2.54)
MODEL 300192
0.820 (20.828) Max
0.160 Max
(4.06)
MODEL 300193
0.820 (20.828) Max
0.160 Max
(4.06)
0.413
(10.490)
Max
0.413
(10.490)
Max
1
1
2
0.250
(6.35)
0.150
(3.81)
3
0.250
(6.35)
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
4
2
3
4
5
0.250
0.150 (6.35)
(3.81)
0.150
(3.81)
0.100
(2.54)
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
R1
R2
R3
R1
R2
R3
1
2
3
4
1
2
3
4
5
Document Number: 63044
Revision: 24-Mar-10
For any questions, contact:
foil@vishaypg.com
www.foilresistors.com
2
2R, 3R, 4R
Vishay Foil Resistors
FIGURE 4 - MOLDED 2R, 3R, 4R RESISTOR NETWORK DIMENSIONS AND CIRCUIT DESIGN
in inches (millimeters)
MODEL 300194
0.820 (20.828) Max
0.160 Max
(4.06)
R1
0.413
(10.490)
Max
R2
R3
1
2
3
4
5
6
0.150
(3.81)
0.100
(2.54)
0.150
(3.81)
0.150
(3.81)
0.100
(2.54)
1
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
2
3
4
5
6
MODEL 300195
1.20 (30.48) Max
R1
0.413
(10.490)
max
R2
R3
R4
1
2
0.250
(6.35)
3
0.250
(6.35)
4
0.250
(6.35)
5
1
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
2
3
4
5
0.150
(3.81)
MODEL 300196
1.20 (30.48) Max
0.245 (6.223)
R1
0.413
(10.490)
max
R2
R3
R4
1
2
0.250
(6.35)
3
0.250
(6.35)
4
5
6
1
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
2
3
4
5
6
0.150
(3.81)
0.150
(3.81)
0.100
(2.54)
MODEL 300197
1.20 (30.48) Max
0.245 (6.223)
R1
0.413
(10.490)
max
R2
R3
R4
1
2
0.250
(6.35)
3
4
5
6
7
1
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
2
3
4
5
6
7
0.150
(3.81)
0.150
0.150
(3.81)
(3.81)
0.100
0.100
(2.54)
(2.54)
MODEL 300198
1.20 (30.48) Max
0.245 (6.223)
R1
0.413
(10.490)
max
R2
R3
R4
1
2
0.250
(6.35)
3
4
5
0.250
(6.35)
6
1
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
2
3
4
5
6
0.150
(3.81)
0.150
(3.81)
0.100
(2.54)
www.foilresistors.com
3
For any questions, contact:
foil@vishaypg.com
Document Number: 63044
Revision: 24-Mar-10
2R, 3R, 4R
Vishay Foil Resistors
FIGURE 5 - MOLDED 2R, 3R, 4R RESISTOR NETWORK DIMENSIONS AND CIRCUIT DESIGN
in inches (millimeters)
MODEL 300199
1.20 (30.48) Max
0.245 (6.223)
R1
0.413
(10.490)
max
R2
R3
R4
1
2
3
4
5
6
7
8
0.150
0.150
0.150
0.150
(3.81)
(3.81)
(3.81)
(3.81)
0.100
0.100
0.100
(2.54)
(2.54)
(2.54)
1
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
2
3
4
5
6
7
8
MODEL 300210
0.820 (20.828) Max
0.160 Max
(4.06)
4
0.413
(10.490)
Max
R1
R2
R3
1
1
0.250
(6.35)
2
3
4
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
0.250 0.150
(6.35) (3.81)
2
3
MODEL 300211
1.20 (30.48) Max
0.245 (6.223)
1
0.413
(10.490)
max
R1
1
2
0.250
(6.35)
R2
R3
R4
3
0.250
(6.35)
4
5
6
0.150
(3.81)
0.150
(3.81)
0.100
(2.54)
2
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
3
4
5
MODEL 300212
1.20 (30.48) Max
1
0.413
(10.490)
max
R1
1
2
0.250
(6.35)
R2
R3
R4
3
0.250
(6.35)
4
0.250
(6.35)
5
Tol.: ± 0.010" (0.254 mm)
Lead Length 0.750" (19.05 mm) Min
0.150
(3.81)
2
3
4
5
ORDERING INFORMATION - MOLDED 2R, 3R AND 4R RESISTOR NETWORKS
Networks are built to your requirements. Send your schematic and electrical requirements to the Applications Engineering
Department. (See data sheet “Network Worksheet”) A unique part number will be assigned which defines all aspects of your
network.
Document Number: 63044
Revision: 24-Mar-10
For any questions, contact:
foil@vishaypg.com
www.foilresistors.com
4
Legal Disclaimer Notice
Vishay Precision Group
Disclaimer
All product specifications and data are subject to change without notice.
Vishay Precision Group, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay Precision Group”), disclaim any and all liability for any errors, inaccuracies or incompleteness
contained herein or in any other disclosure relating to any product.
Vishay Precision Group 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 Precision Group’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 Precision Group.
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 Precision Group products not expressly indicated
for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay Precision Group for
any damages arising or resulting from such use or sale. Please contact authorized Vishay Precision Group
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: 63999
Revision: 22-Feb-10
www.vishaypg.com
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