THE PROPERTIES OF SPUTTERED METAL RESISTORS

Abstract

Satisfactory high resistances have been made by sputtering platinum on soft glass rods and embedding the rods in paraffin in glass tubes for protection. These resistances are useful for measuring small currents in conjunction with an electrometer, by the resistance shunt method. When properly prepared, sputtered resistors are found to change but slowly with age (tests lasted over 15 months), thus overcoming the principal defect of sputtered metal resistors. They fulfill the following requirements excellently: no trace of polarization, a negligible temperature coefficient, and Ohm's Law is obeyed.