This invention concerns a power module comprising a power device, a baseplate, circuit carrier, and a flat stacked aluminium electrolytic snubber capacitor comprising a layered structure of a cathode layer, a separator layer, comprising paper and an electrolyte and an anode layer, comprising an aluminium material with an aluminium oxide dielectric, wherein the circuit carrier are mounted on the baseplate, the power device and snubber capacitor are placed on the circuit carrier within the power module and electrically connected to the circuit carrier, the circuit carrier being configured for providing an electrical connection between the power device and the snubber capacitor.

An electrolytic capacitor that includes a cuboidal resin molding including a first end surface, a second end surface, a laminate of capacitor elements each including an anode and a cathode opposite to the anode, and a sealing resin sealing the laminate; a first external electrode on the first end surface of the resin molding and electrically connected to the anode exposed at the first end surface; and a second external electrode on the second end surface of the resin molding and electrically connected to the cathode exposed at the second end surface, wherein the first external electrode includes, sequentially from a side thereof adjacent to the first end surface of the resin molding, a first thermal spraying electrode layer and a second thermal spraying electrode layer in contact with the first thermal spraying electrode layer and having a higher porosity than the first thermal spraying electrode layer.

An electrolytic capacitor that includes a cuboidal resin molding including a first end surface, a second end surface, a laminate of capacitor elements each including an anode and a cathode opposite to the anode, and a sealing resin sealing the laminate; a first external electrode on the first end surface of the resin molding and electrically connected to the anode exposed at the first end surface; and a second external electrode on the second end surface of the resin molding and electrically connected to the cathode exposed at the second end surface, wherein the first external electrode includes, sequentially from a side thereof adjacent to the first end surface of the resin molding, a first thermal spraying electrode layer and a second thermal spraying electrode layer in contact with the first thermal spraying electrode layer and having a higher porosity than the first thermal spraying electrode layer.

Provided are a polyorganosiloxane high in elasticity, high in strength and the like. The polyorganosiloxane is a polyorganosiloxane including an M unit (R.sup.1R.sup.2R.sup.3SiO.sub.1/2) at a content of 10% by mol or more relative to the total of silicon and a T unit (R.sup.6SiO.sub.3/2) at a content of 80% by mol or less relative to the total of silicon, the polyorganosiloxane having an alkoxy group bound and a reactive functional group bound to silicon, wherein the polyorganosiloxane has the alkoxy group bound at a content of 0.07 to 4% by weight based on the total weight of the polyorganosiloxane and has 3 to 12 of the reactive functional groups bound on a number basis per a molecular weight of 1000 of the polyorganosiloxane, and the weight loss of the polyorganosiloxane in heating at 110° C. under a reduced pressure of 0.15 torr for 2 hours is 5% by weight or less.

Provided are a polyorganosiloxane high in elasticity, high in strength and the like. The polyorganosiloxane is a polyorganosiloxane including an M unit (R.sup.1R.sup.2R.sup.3SiO.sub.1/2) at a content of 10% by mol or more relative to the total of silicon and a T unit (R.sup.6SiO.sub.3/2) at a content of 80% by mol or less relative to the total of silicon, the polyorganosiloxane having an alkoxy group bound and a reactive functional group bound to silicon, wherein the polyorganosiloxane has the alkoxy group bound at a content of 0.07 to 4% by weight based on the total weight of the polyorganosiloxane and has 3 to 12 of the reactive functional groups bound on a number basis per a molecular weight of 1000 of the polyorganosiloxane, and the weight loss of the polyorganosiloxane in heating at 110° C. under a reduced pressure of 0.15 torr for 2 hours is 5% by weight or less.

A chemical etch is performed on a sheet of material. An electrochemical etch is performed on the sheet of material after the chemical etch is performed on the sheet of material. A capacitor is fabricated such that an electrode included in the capacitor includes material from the sheet of material after the electrochemical etch was performed on the sheet of material. In some instances, the chemical etch included at least partially immersing the sheet of material in an etch bath that includes molybdenum. Additionally or alternately, the chemical etch can be performed for a period of time less than 60 s.

Multi-terminal capacitor devices and methods of making multi-terminal capacitor devices are described herein. The multi-terminal capacitor devices may include a plurality of individual capacitors arranged in a single device layer, such as high surface area capacitors. A individual capacitor may include an aluminum foil-based electrode, an aluminum oxide dielectric layer conformal with the aluminum foil-based electrode, and a conductive material electrode, such as a conducting polymer or a conductive ceramic, in conformal contact with the dielectric layer.

Multi-terminal capacitor devices and methods of making multi-terminal capacitor devices are described herein. The multi-terminal capacitor devices may include a plurality of individual capacitors arranged in a single device layer, such as high surface area capacitors. A individual capacitor may include an aluminum foil-based electrode, an aluminum oxide dielectric layer conformal with the aluminum foil-based electrode, and a conductive material electrode, such as a conducting polymer or a conductive ceramic, in conformal contact with the dielectric layer.

A capacitor and a method of processing an anode metal foil are presented. The method includes electrochemically etching the metal foil to form a plurality of tunnels. Next, the etched metal foil is disposed within a widening solution to widen the plurality of tunnels. Exposed surfaces of the etched metal foil are then oxidized. The method includes removing a section of the etched metal foil, where the section of the etched metal foil includes exposed metal along an edge. The section of the etched metal foil is placed into a bath comprising water to form a hydration layer over the exposed metal on the section of the etched metal foil. The method also includes assembling the section of the etched metal foil having the hydration layer as an anode within a capacitor.

A capacitor and a method of processing an anode metal foil are presented. The method includes electrochemically etching the metal foil to form a plurality of tunnels. Next, the etched metal foil is disposed within a widening solution to widen the plurality of tunnels. Exposed surfaces of the etched metal foil are then oxidized. The method includes removing a section of the etched metal foil, where the section of the etched metal foil includes exposed metal along an edge. The section of the etched metal foil is placed into a bath comprising water to form a hydration layer over the exposed metal on the section of the etched metal foil. The method also includes assembling the section of the etched metal foil having the hydration layer as an anode within a capacitor.