Showing papers on "Tantalum capacitor published in 1969"

Method for the fabrication of discrete rc structure

Abstract: A technique for the fabrication of tantalum-based resistors and capacitors on a single substrate involves a series of process steps wherein an anodic tantalum oxide film initially formed on areas destined for use as either resistors or capacitors serves as an etch stop when removing subsequently deposited tantalum components therefrom.

Niobium-zirconium-titanium capacitor electrode

Abstract: Electric capacitor comprising an electrode in powder or fabricated part form (e.g. wire or sheet) made of a ternary niobium-zirconium-titanium alloy with an oxide film on the electrode surface as capacitor dielectric. The alloy is selected as to composition and treated to produce and retain the Beta (body-centered cubic) phase. The resultant product affords highcapacitor stability and low leakage approaching the characteristics of the more expensive tantalum at a capacitance cost comparable to or better than that of niobium.

Solid electrolytic capacitors having an additional insulated layer formed on the dielectric layer

Abstract: To improve the voltage breakdown and leakage current of solid electrolytic capacitors, the dielectric layer is reenforced by an additional layer of silicon nitride, silicon dioxide or increasing the thickness of the original dielectric layer.

Graded insulator thin film capacitor and method of making

Abstract: A thin film capacitor suitable for microelectronic circuit applications using aluminum as one electrode and any suitable metal, such as gold, as the other electrode. The dielectric is a metallic oxide of high dielectric constant, such as Ta205, contacted directly by the gold electrode but having a thin film of A1203 interposed between it and the aluminum electrode. The relatively high barrier of the A1-A1203 interface prevents the injection of electrons from the metal into the dielectric and greatly reduces the dissipation and rectifying tendency of the capacitor.

Leadless solid electrolyte tantalum capacitor

Abstract: A SOLID ELECTROLYTE TANTALUM CAPACITOR IS PROVIDED WHEREIN THE WIRE CONNECTION TO THE TANTALUM SINTERED PELLET IS ELIMINATED. A NONPOROUS TANTALUM PAD IS PRESSED OR WELDED TO THE PELLET BODY AND, AFTER ANODIZATION, A ONOWETTING, HIGH-TEMPERATURE RESISTANCE COATING IS APPLIED OVER THE OXIDE FILM COVERING THE PAD. THE COATING ACTS TO MASK THE PAD FROM SUBSEQUENT SEMICONDUCTOR DEPOSITION. AN ANODE CONNECTION CAN THEN BE MADE EITHER BY EXPOSING THE SURFACE OF THE TANTALUM PAD OR BY WELDING THROUGH THE MASKING AND UNDERLYING OXIDE TO THE PAD SURFACE.

Leadless solid electrolyte tantalum capacitor

Abstract: A SOLID ELECTROLYTE TANTALUM CAPACITOR IS PROVIDED WHEREIN THE WIRE CONNECTIN TO THE TANTALUM SINTERED PELLET IS ELIMINATED. A PORTION OF THE PELLET IS RENDERED NONPOROUS TO ANODIZING SOLUTIONS AND SEMICONDUCTOR DEPOSITION SOLUTIONS. FOLLOWING FORMATION OF OXIDE AND SOLID ELECTROLYTE DEPOSITION, THE NONPOROUS AREA IS EXPOSED, REANODIZED, AND REEXPOSED TO FORM A SEPARATING MARGIN AND THE ANODE CONNECTION MADE DIRECTLY TO THIS REEXPOSED NONPOROUS AREA OF THE PELLET.

Capacitor with hafnium dioxide dielectric

Abstract: HAFNIUM FILM CAPACITORS ARE PREPARED BY REACTIVELY SPUTTERING HAFNIUM DIOXIDE UPON AN ALUMINUM ELECTRODE, SUBJECTING THE RESULTANT ASSEMBLY TO ELECTROLYTIC ANODIZATION AND DEPOSITING A COUNTERELECTRODE THEREON.

Electrolytic capacitor and method for manufacturing solid electrolyte

Abstract: A solid electrolytic capacitor with a charge transfer complex disposed in place of the usual electrolyte (paste or manganese dioxide), the acceptor being an organic substance having oxidizing property against aluminum, tantalum etc. and the donor being selected so as to decrease the resistivity of the complex compound as much as possible; the characteristic being that through the use of the organic semiconductor electrolyte the self-healing of oxide film is made possible.

Hermetically sealed, wet electrolytic capacitor

Abstract: A wet pellet electrolytic tantalum capacitor having a single matched hermetic glass to tantalum seal and provided with a reverse voltage capability.