FIELD: physics.
SUBSTANCE: invention relates to microelectronics and can be used in instrument-making, in making film-type resistance thermometers with the temperature coefficient of resistance of platinum. Disclosed is a resistance thermometer having an insulating substrate, an adhesive layer made of high-melting metal, a thin-film sensitive element made of copper with thickness of 1.5-2.5 mcm, protective layers and terminal pads. The thin-film sensitive element and terminal pads are situated on the adhesive layer. The protection of the thermistor and contact pads is made of high-melting metal with thickness of 0.09-0.1 mcm with a 2-6 mcm overlapping region around the periphery of the elements and a layer of an inorganic dielectric in which "windows" are formed in the region of the terminal pads for contact units, where a current-conducting layer is deposited. The overlapping region of the current-conducting unit and the thermistor is 0.1-0.5 mm and 15-20 mcm on the rest of the periphery of the terminal pad. The thin-film sensitive element is made of copper with a nickel additive with concentration of 0.01-0.2% of the mass.
EFFECT: higher accuracy of measuring temperature.
3 dwg
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Authors
Dates
2014-04-20—Published
2012-06-14—Filed