Precision resistor fabrication employing tapped resistive elements

摘要

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.