300190-9 Datasheet, PDF (1/4 Pages) Vishay Siliconix – Bulk Metal Foil Technology Molded Resistor Networks

2R, 3R, 4R
Vishay Foil Resistors
Bulk Metal^® Foil Technology
Molded Resistor Networks
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 ohms to 150Kohms 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.
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
FEATURES
• Resistance range each resistor: 1Ω to 150KΩ
• TCR Tracking: to ± 0.5ppm/°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
TABLE 1 - TYPICAL ⁽¹⁾ PERFORMANCE CHARACTERISTICS
Resistance Temp Characteristic (TCR) ± 2ppm/°C nominal
TCR Tracking To Reference Element 0.1ppm/°C to 4ppm/°C⁽⁴⁾
Max Ambient Temp at Rated Wattage + 125°C
Max Ambient Temp at Zero Power
+ 175°C
Thermal Shock
∆∆RR⁽_a²_t⁾_io(3)
0.002%
0.002%
Low Temperature Operation ∆R
0.005%
∆Ratio 0.002%
Short Time Overload
∆R
0.002%
∆Ratio 0.002%
Terminal Strength
∆R
0.001%
∆Ratio 0.001%
Resistance to Soldering Heat ∆R
0.002%
∆Ratio 0.001%
Moisture Resistance
∆R
0.003%
∆Ratio 0.003%
Shock
∆R
0.001%
∆Ratio 0.001%
Vibration, High Frequency ∆R
0.001%
∆Ratio 0.001%
Life 0.3 W @ +125°C
0.02 W @ +60°C
0.05 W @ +25°C
∆R
∆Ratio
∆R
∆Ratio
∆R
∆Ratio
0.01%
0.01%
0.003%
0.001%
0.002%
0.001%
High Temperature Exposure ∆R
0.01%
∆Ratio 0.01%
Low Temperature Storage ∆R
0.002%
∆Ratio 0.002%
Insulation Resistance
> 500,000MΩ
Dielectric Withstanding Voltage
Voltage Coefficient⁽⁵⁾
∆R
∆Ratio
No Change
< 0.1ppm/V ⁽⁵⁾
< 0.1ppm/V ⁽⁵⁾
Noise
N/A
– 40dB (non-measurable)
Inductance
N/A
0.08µH
Capacitance
N/A
0.5pf
Rise Time
N/A
1ns @ 1KΩ
Thermal EMF lead to lead N/A
0.04µV/°C
Thermal EMF air circulation N/A
0.02µV/°C
Thermal EMF power
Shelf Life
N/A
0.1µV for 20mW
∆R ⁽⁶⁾
∆Ratio
(6)
25ppm/year
10ppm/year
(1) Typical is a designer's reference that represents 85% of
production. Most of the ∆R's shown are maximums. To ensure
that all typical values are maximums a "burn-in" is required.
(2) ∆R: absolute resistance change.
(3) ∆Ratio: 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 < 0.1ppm/V and within the measurement capability of
the equipment. Voltage coefficient is "essentially zero".
(6) 2 ppm when in hermetically sealed package.
SALES
• ISRAEL: [e-mail] • FRANCE/SWITZERLAND/SOUTHERN EUROPE: [e-mail] • AMERICAS: [e-mail]
• ASIA/JAPAN: [e-mail] • UK/HOLLAND/SCANDANAVIA: [e-mail] • GERMANY/CZECH REPUBLIC/AUSTRIA: [e-mail]
www.vishay.com
92
For technical questions in the Americas, contact [e-mail]
Document Number: 63044
For technical questions in Asia/Japan/Europe/Africa/Israel, contact [e-mail]
Revision 18-Aug-04