Precision resistor fabrication employing tapped resistive elements
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United States of America Patent
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-
Dec 6, 1983
Issued Date -
N/A
app pub date -
Jun 25, 1980
filing date -
Jan 21, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Thin film resistors (FIG. 1) are produced on flexible tape 1 to provide at low cost a very wide range of precision resistors having low inductance. A reel of tape 70 coated with resistive material is etched to create a plurality of sinuous resistor patterns 3 and an array of spaced interconnection pads 102 suitable for connection to external leads via intermediate wires. Formation of a resistor of the desired precision value is performed by a selection of two pads, preferably by automated means by a trial and error technique. Prior to pad selection, the resistor can be covered with a material 4 which provides stability of resistance, mechnical protection and facilitation of assembly.
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