Vishay Sprague, Inc.

Nissim Cohen

Reuven Katraro

John Bultitude

Haim Goldberger

Alex Eidelman

Steve Breithaupt

Eli Bershadsky

Lilia Kushnarev

Marina Kravchik-Volfson

An electrolytic capacitor includes a metal case, a porous pellet anode disposed within the metal case, an electrolyte disposed within the metal case, and a cathode element formed of an electrophoretically deposited metal or metal oxide powder of a uniform thickness disposed within the metal case and surrounding the anode. A method of manufacturing an electrolytic capacitor includes providing a metal case, electrophoretically depositing on the metal can a refractory metal oxide to form a cathode element, and placing a porous pellet anode and an electrolyte within the can such that the cathode element and the anode element being separated by the electrolyte.

Electrophoretically deposited cathode capacitor

A bulk capacitor includes a first electrode formed of a metal foil and a semi-conductive porous ceramic body formed on the metal foil. A dielectric layer is formed on the porous ceramic body for example by oxidation. A conductive medium is deposited on the porous ceramic body filling the pores of the porous ceramic body and forming a second electrode. The capacitor can then be encapsulated with various layers and can include conventional electrical terminations. A method of manufacturing a bulk capacitor includes forming a conductive porous ceramic body on a first electrode formed of a metal foil, oxidizing to form a dielectric layer and filling the porous body with a conductive medium to form a second electrode. A thin semi-conductive ceramic layer can also be disposed between the metal foil and the porous ceramic body.

Bulk capacitor and method

A surface mount chip capacitor includes a metal substrate, a conductive powder element including a valve metal and partially surrounding the metal substrate with the metal substrate extending outwardly from the conductive powder towards the anode end of the surface mount chip capacitor, a silver body cathode at least partially surrounding the conductive powder element, a coating formed by vapor-phase deposition surrounding the silver body cathode, an insulative material formed about a portion of the substrate extending outwardly from the conductive powder, a conductive coating formed around the metal substrate at the anode end of the surface mount chip capacitor, an end termination anode electrically connected to the conductive coating at the anode end of the surface mount chip capacitor, and an end termination cathode electrically connected to the silver body cathode at the cathode end of the surface mount chip capacitor.

Surface mount chip capacitor

Growing community of inventors

Tivon, Israel

Nissim Cohen