300144, 300145
Vishay Foil Resistors
Bulk Metal
廬
Foil Technology
Small Package, Ultimate Tracking Voltage Dividers
FEATURES
鈥?Temperature Coefficient of Resistance:
(See Figures 1 and 2 in data sheet 鈥? Technical Reasons
to Specify Bulk Metal廬 Foil Resistor Networks.鈥?
鈥?TCR Tracking: to
鹵
0.5ppm/擄C
Product may not
be to scale
鈥?Ratio Stability: <
鹵
0.001% (10ppm) under load-life
conditions
鈥?Ratio Match Tolerance: to 0.005%
THROUGH HOLE
鈥?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鈥檚 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 = 10K鈩?/div>
R2 = 10K鈩?/div>
ABSOLUTE
TOLERANCE
鹵
0.05%
鹵
0.05%
RATIO MATCH
TOLERANCE
鹵
0.01%
鹵
0.01%
TCR
TRACKING
鹵
0.5 ppm/擄C
鹵
0.5 ppm/擄C
*Specify the resistance value for each resistor 鈥?even if all values are the same.
TABLE 2 - ORDERING INFORMATION - 300145
MODEL
NUMBER
300145
RESISTANCE
VALUE*
R1 = 5K鈩?/div>
R2 = 10K鈩?/div>
R3 = 5K鈩?/div>
R4 = 10K鈩?/div>
ABSOLUTE
TOLERANCE
鹵
0.01% ABS
鹵
0.01% ABS
鹵
0.01% ABS
鹵
0.01% ABS
RATIO MATCH
TOLERANCE
鹵
0.005% MA
鹵
0.005% MA
鹵
0.005% MA
鹵
0.005% MA
TCR
TRACKING
鹵
1ppm/擄C
鹵
1ppm/擄C
鹵
1ppm/擄C
鹵
1ppm/擄C
*Specify the resistance value for each resistor 鈥?even if all values are the same.
VISHAY FOIL 鈥?FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31
鈥?GERMANY +49.9287.710 FAX: +49 9287.70435
鈥?ISRAEL +972.3.557.0945 FAX: +972.3.558.9121
鈥?ITALY + 39.2.300.11919 FAX: +39.2.300.11999
鈥?JAPAN +81.42.729.0661 FAX: +81.42.729.3400
鈥?SINGAPORE +65.788.6668 FAX: +65.788.0988
鈥?SWEDEN +46.8.594.70590 FAX: +46.8.594.70581
鈥?UK +44 191 514 8237 FAX: +44 1953 457 722
鈥?USA +1 610 407-4800 FAX: +1 610 640-9081
www.vishay.com
90
Document Number: 63045
Revision 19-Jul-02
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