300144 Datasheet, PDF (1/2 Pages) Vishay Siliconix – Bulk Metal Foil Technology Small Package, Ultimate Tracking Voltage Dividers

300144, 300145
Vishay Foil Resistors
Bulk Metal^® Foil Technology
Small Package, Ultimate Tracking Voltage Dividers
FEATURES
Product may not
be to scale
• Temperature Coefficient of Resistance:
(See Figures 1 and 2 in data sheet “7 Technical Reasons
to Specify Bulk Metal® Foil Resistor Networks.”)
• TCR Tracking: to ± 0.5ppm/°C
• Ratio Stability: < ± 0.001% (10ppm) under load-life
conditions
• Ratio Match Tolerance: to 0.005%
• Absolute Tolerance: to 0.005%
These voltage dividers are the first choice for accurate and stable division. Two resistors simultaneously etched into a piece of foil
produce the maximum in TCR tracking without the need for curve matching of separate resistors. The size and very small footprint
of the divider 300144 is also very important. This is the smallest foil divider available. A variety of ratios and impedance’s are already
tooled and are shown in Table 1 on the following page. Small deviations from the ratios shown can be accommodated in the trim
allowance already included in each side of the divider. Larger departures from the ratios shown may require new artwork.
The 300145 is a pair of 300144 elements back to back in a single molded package. Although performance between dividers is not
quite as good as within each divider, it is the most accurate and stable full bridge or differential gain setting device made.
TABLE 1 - ORDERING INFORMATION - 300144
MODEL
NUMBER
300144
RESISTANCE
VALUE*
R1 = 10KΩ
R2 = 10KΩ
ABSOLUTE
TOLERANCE
± 0.05%
± 0.05%
*Specify the resistance value for each resistor — even if all values are the same.
RATIO MATCH
TOLERANCE
± 0.01%
± 0.01%
TCR
TRACKING
± 0.5 ppm/°C
± 0.5 ppm/°C
TABLE 2 - ORDERING INFORMATION - 300145
MODEL
NUMBER
300145
RESISTANCE
VALUE*
R1 = 5KΩ
R2 = 10KΩ
R3 = 5KΩ
R4 = 10KΩ
ABSOLUTE
TOLERANCE
± 0.01% ABS
± 0.01% ABS
± 0.01% ABS
± 0.01% ABS
*Specify the resistance value for each resistor — even if all values are the same.
RATIO MATCH
TOLERANCE
± 0.005% MA
± 0.005% MA
± 0.005% MA
± 0.005% MA
TCR
TRACKING
± 1ppm/°C
± 1ppm/°C
± 1ppm/°C
± 1ppm/°C
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Document Number: 63045
Revision 19-Jul-02