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Keywords:

  • electrical resistance measurement;
  • six-wire ohms measurements

Abstract

During production of resistors and resistive devices, one of the most troublesome problems for manufacturers involves increased measurement errors caused by adjacent resistive elements and contamination. Both of these effects lead to poor yields, low productivity and subsequently lower profitability. This paper describes both effects and discusses the six-wire ohms measurement technique as a means of compensating for the problems. In addition, some of the most common limitations of the six-wire ohms measurement technique will be discussed. At the end, some practical examples will demonstrate the usage of available test and measurement equipment in production. Major trade-offs between accuracy and speed while testing radial resistors and resistor networks will be shown. © 1998 John Wiley & Sons, Ltd.