THIN-FILM CAPACITOR FOR SURFACE MOUNTING INTO ASYMMETRICAL STRIP LINES Russian patent published in 2012 - IPC H01G4/08 

FIELD: electricity.

SUBSTANCE: thin-film separating capacitor for surface mounting into strip lines of transmission comprises the following serially connected components: a substrate made of a semi-insulating semiconductor of electronic conductivity type, lower and middle parts of which have identical rectangular section, a conducting layer made of an epitaxial highly alloyed conductor of electronic conductivity type, an insulating layer and two metal contact sites of rectangular shape, separated between each other with a gap and made in the form of a double-step pedestal, the lower rectangular step of which comprises lower and middle parts of the substrate, and the second step arranged in the form of a quadrangular truncated pyramid comprises an upper part of the substrate, a conducting layer, an insulating layer applied above the entire outer surface of the pyramid, and two metal contact sites, the upper flat part of the first step of the pedestal is also coated with an insulating layer, being a continuation of the pyramid insulating layer applied simultaneously with application of the insulating layer onto the pyramid, and at the side of the lower surface of the substrate there is a protective-strengthening layer applied additionally.

EFFECT: reduced variation of parameters in separate capacitors during their manufacturing.