Tantalum capacitor

About: Tantalum capacitor is a research topic. Over the lifetime, 2432 publications have been published within this topic receiving 26709 citations.

Characterization of power capacitors under practical current condition using capacitor loss analyzer

Abstract: In this study, the characteristics of capacitor are measured by using the function of B-H analyzer. In contrast to impedance analyzer measurement, the B-H analyzer can be used to measure capacitor characteristics under high current amplitude condition that approaches the practical current condition. In addition, the rectangular current waveform of a capacitor can also be measured under variable frequency and current conditions. Furthermore, loss evaluation of capacitor can be calculated through loss map method. The characteristics of three different dielectric capacitors — electrolytic, ceramic, and film — measured with sinusoidal and rectangular current waveforms, respectively, and discussed.

Manufacture of electrode foil for aluminum electrolytic capacitor

Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method, which makes the capacitor of electrode foil for electrolytic capacitor high, can reduce leakage current and can improve water resistance. SOLUTION: A pure boiling process for immersing an etched aluminum foil in high-temperature pure water for prescribed time period, a process for forming an anode oxide coat with adipic acid chemical liquid and a process for forming the anode oxide coat with silicic acid chemical liquid being installed and a different oxide coat is formed. Thus, the capacity of electrode foil is made high, leakage current is reduced and water resistance can be improved. Then, an electrolytic capacitor can be miniaturized, and capacity can be made to be high and the practical value becomes high.

Mim capacitor and associated production method

Abstract: An MIM capacitor includes a first capacitor electrode, which is formed in the surface of a first intermediate dielectric, a second intermediate dielectric, which is formed on the first intermediate dielectric and has an opening that exposes the first capacitor electrode, and a first electrically conducting diffusion barrier layer, which is formed on the surface of the exposed first capacitor electrode. On the diffusion barrier layer and on the side walls of the opening there is also formed a capacitor dielectric and a second capacitor electrode on top.

Electrical component with low impedance at high frequency

Abstract: The disclosure relates to an electrical component with low impedance over a range of high frequency input signals. The electrical component comprises a dielectric film-forming metal anode with an anode lead projecting from the anode, electrolyte contacting the surfaces of the anode to form a body, and a cathode lead contacting the body and substantially parallel to the plane of the anode lead. Preferably, the length of the anode lead and the cathode lead are a minimum as well as is the distance between the anode lead and the cathode lead in order to help reduce the impedance of the electrical component over a range of high frequency input signals. Surfaces of the body are at an angle with respect to each other. The cathode lead includes an elongated strip of electrically conducting material projecting from the body and a surface of the strip is joined to one or more of the surfaces of the body at an angle with respect to each other. Preferably, the elongated strip of the cathode lead is joined to one of the surface of the body. An example of an electrical component body is a solid tantalum capacitor.

Composite electronic component and board having the same

Abstract: A composite electronic component includes: an insulating sheet; a tantalum capacitor including a body part containing a material formed of sintered tantalum powder particles and a tantalum wire partially embedded in the body part and disposed on the insulating sheet; a multilayer ceramic capacitor (MLCC) including a ceramic body in which dielectric layers and internal electrodes are alternatingly disposed and first and second external electrodes disposed on a lower surface of the ceramic body and disposed on the insulating sheet; and a molding part disposed to enclose the tantalum capacitor and the multilayer ceramic capacitor, wherein at least one of the tantalum capacitor and the multilayer ceramic capacitor includes a plurality of capacitors.