Statistics – Applications
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.507...49f&link_type=abstract
Proceedings of the European Space Components Conference, ESCCON 2002, 24-27 September 2002, Toulouse, France. Compiled by R.A. H
Statistics
Applications
Scientific paper
Since its introduction on the market in 1962, Bulk Metal Foil Technology (BMFT) still out - performs all other resistor technologies available today for applications that require precision and stability. Foil resistors are used when high accuracy is required. The combined effects caused by: - variation in ambient temperature and - self heating as a result of load (Joule effect) influence the stability of high precision resistive components. The relative change of resistance with ambient temperature is defined as Temperature Coefficient of Resistance(TCR). A low TCR allows a resistor to maintain its precise value when its temperature changes due to ambient temperature variations. Although the TCR of foil resistors is considered extremely low, this characteristic has been further refined over the years. The latest achievement came with the development by Vishay of the new alloy. The Z-based foil technology provides a significant reduction of the resistive components sensitivity to ambient temperature variations and applied power changes. This paper explains the temperature effects on the stability of the resistors and offers some Vishay based components as ultimate choice for accuracy in space, airborne and military projects.
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