Abstract:
A method for treating anodes of refractory valve metals by deoxidizing the anodes using Mg in an oven, prior to sintering. The process limits free oxygen in the metal compact and improves performance of a capacitor, especially with regards to rated voltage.
Abstract:
A process for forming a capacitor. The process includes providing an anode; providing a dielectric on the anode; exposing the anode to a polymer precursor solution comprising monomer, conjugated oligomer and optionally solvent and polymerizing the polymer precursor. The ratio between monomer and conjugated oligomer ranges from 99.9/0.1 to 75/25 b y weight. The solvent content in the polymer precursor solution is from 0 to 99 % by weight.
Abstract:
A solid electrolytic capacitor with an anode and a dielectric on the anode. A cathode is on the dielectric and a conductive coating on said dielectric. A cathode lead is electrically connected to the conductive coating by an adhesive selected from the group consisting of a transient liquid phase sinterable material and polymer solder.
Abstract:
A capacitor, and method of making a capacitor, is provided wherein the capacitor has exceptionally high break down voltage. The capacitor has a tantalum anode with an anode wire attached thereto. A dielectric film is on the tantalum anode. A conductive polymer is on the dielectric film. An anode lead is in electrical contact with the anode wire. A cathode lead is in electrical contact with the conductive polymer and the capacitor has a break down voltage of at least 60 V.
Abstract:
A method for maintaining quality of monomer during a coating process for intrinsically conductive polymer which suppresses unwanted by-products. A neutralization process using a base or anion exchange resin is used batch-wise or continuous.
Abstract:
The adhesion of a conductive polymer film to an oxidized porous pellet anode is improved by the incorporation of a silane coupling agent in the polymer impregnating solution. The incorporation of the silane coupling agent also decreases leakage current and dissipation factor. Suitable silanes are those of the general formula (R1-R3)-Si-(OR2)3. Each of R2 and R3 is a C1-C6 alkyl group such as methyl, ethyl, or propyl. R1 can be chosen from a wide variety of organic functional groups such as epoxy, glycidoxy, amino, and pyrrole. The most preferred silane is 3-glycidoxypropyltrimethoxysilane.
Abstract:
Verfahren zur Bereitstellung eines verbesserten hermetisch versiegelten Kondensators enthält die folgenden Schritte: Aufbringen eines Lötmittels und eines Flussmittels an einer Innenfläche eines Gehäuses; Aufschmelzen des Lötmittels auf der Innenfläche; Entfernen des Flussmittels, wodurch ein flussmittelarmes Lötmittel gebildet wird; Einsetzen eines Kondensatorelements in das Gehäuse; Wiederaufschmelzen des flussmittelarmen Lötmittels, wodurch eine Lötverbindung zwischen dem Gehäuse und der lötbaren Schicht gebildet wird; und Versiegeln des Gehäuses.
Abstract:
An electrolytic solution comprising glycerine and dibasic potassium phosphate. The electrolytic solution has a water content of less than 1000 ppm and is prepared by mixing the glycerine and the dibasic potassium phosphate and then heating to about 150 to 180°C for about 1 to 12 hours. A method of anodizing a metal comprising forming a film on the metal with an electrolytic solution comprising glycerine and dibasic potassium phosphate. The metal is preferably a valve metal, such as tantalum, and the film is formed at a temperature of 150°C or higher.