Abstract: The invention provides (1) a jig for producing capacitors, which stabilizes multiple long plates in order to simultaneously form dielectric layers on a plurality of conductors connected to the long plates and subsequently simultaneously form semiconductor layers thereon, wherein two edge-receiving portions to receive and fix the edges of each plate are electrically insulated from each other, (2) an apparatus comprising the jig for producing capacitors, having feeding terminals for forming dielectric layer and for forming semiconductor layer and long plates comprising a mechanism connecting multiple conductors, and a method for producing capacitors. According to the invention, capacitors each having semiconductor layer as one electrode, narrow in variation of capacitance, and excellent in the ESR value, can be produced at a time.

Abstract: (1) A niobium powder for a capacitor having a tapping density of 0.5 to 2.5 g/ml, an average particle size of 10 to 1000 ?m, angle of repose from 10° to 60°, the BET specific surface area from 0.5 to 40 m2/g and a plurality of pore diameter peak tops in the pore distribution, and a producing method thereof; (2) a niobium sintered body, which is obtained by sintering the above niobium powder and, having a plurality of pore diameter peak tops in a range of 0.01 ?m to 500 ?m, preferably, the peak tops of two peaks among the plurality of pore diameter peak tops having a highest relative intensity are present in the range of 0.2 to 0.7 ?m and in the range of 0.7 to 3 ?m, respectively, and a producing method thereof; (3) a capacitor using the above sintered body and a producing method thereof; and (4) an electronic circuit and electronic device using the above capacitor.

Abstract: A tantalum sintered body comprising a pore size distribution having a plurality of peaks wherein out of a plurality of peaks, two peaks having a largest relative intensity and a second largest relative intensity have a pore diameter of 0.2 to 0.7 ?m and a pore diameter of 0.7 to 3 ?m, having a volume of pore 10 mm3 or more including the volume of pore voids and a specific area of 0.2 to 7 m2/g, and having a CV value of 40,000 to 200,000 ?FV/g when sintered at 1,300° C., and a capacitor using the sintered body.

Abstract: The present invention relates to a chip solid electrolyte capacitor obtained by connecting a part of the anode part and a part of the cathode part of a capacitor element to an anode terminal and a cathode terminal, respectively, and jacket-molding the capacitor element excluding a part or the whole of respective bottom faces or bottom and side faces of the anode and cathode terminals, wherein the connection face of the cathode terminal to the capacitor element is larger than the entire face of the capacitor element in the side connected to the cathode terminal, having large capacitance and low equivalent series resistance (ESR); a production method of the capacitor and an electronic device using the capacitor.

Abstract: The present invention relates to a method for producing a solid electrolytic capacitor element, comprising forming a dielectric layer by chemical formation on the surface of an electric conductor, and sequentially forming a semiconductor layer containing an electrically conducting polymer and an electrode layer on the dielectric layer, wherein after forming the semi-conductor layer, re-chemical formation is performed in an electrolytic solution using a dopant as the electrolyte to repair the dielectric layer after formation of the semiconductor layer. By using the solid electrolytic capacitor element of the present invention, a high-capacitance solid electrolytic capacitor with a good ESR value can be produced.

Abstract: The invention provides a method for producing a solid electrolytic capacitor reliable with good LC value after mounting, wherein a solid electrolytic capacitor element comprises an anode body composed of a material containing at least one selected from a group consisting of an earth-acid metal, an alloy comprising an earth-acid metal as the main component, an electrically conducting oxide of an earth-acid metal and a mixture of two or more thereof, a dielectric layer formed on the anode body by electrolytic oxidation (electrochemical formation) and comprising an oxide as the main component, a semiconductor layer formed on the dielectric layer, and an electrically conducting layer stacked on the semiconductor layer, and the solid electrolytic capacitor element is molded with a resin, cured and then applied voltage (aging) treatment, which method comprises sequentially repeating a step of leaving the resin-molded body to stand at 225 to 305° C.

Abstract: 1. A niobium powder for capacitors, wherein the chromium content is 50 ppm by mass or less, granulated product and sintered body thereof, and producing method of those; 2. a capacitor constructed by one part electrode formed of the niobium sintered body, another part electrode and a dielectric material interposed between two electrodes, and its producing method; and 3. an electronic circuit and electronic device using the capacitor. A capacitor having good voltage resistance properties can be manufactured by using the niobium sintered body for capacitors of the present invention, wherein the chromium content is 50 ppm by mass or less.

Abstract: The present invention relates to a solid electrolytic capacitor with low ESR obtained by stacking a dielectric layer on a surface of an anode body comprising a valve-acting metal or an electrically conducting oxide, further sequentially stacking a semiconductor layer and an electrically conducting layer on the dielectric layer to prepare a solid electrolytic capacitor element, and molding it with a jacket material, the electrically conducting layer having an electrically conducting paste layer mainly comprising an electrically conducting metal powder and resin, wherein the tap density of the electrically conducting metal powder is 4 g/cm3 or more, and an electronic circuit and an electronic device using the solid electrolytic capacitor.

Abstract: The present invention provides a capacitor wherein increase in the ESR value after a high temperature loading test is mitigated. A capacitor element, comprising an electric conductor having formed on the surface thereof a dielectric layer as one electrode, and a semiconductor layer, carbon layer and electrode layer formed sequentially on the dielectric layer, which capacitor element is characterized in that the carbon layer contains a dopant; a carbon paste as a material of the capacitor element; a capacitor using the capacitor element; and an electronic circuit and an electronic device using the capacitor.

Abstract: The present invention relates to a solid electrolyte capacitor having a small size, a high capacitance, a low ESR and an excellent LC value, which comprises a jacketed capacitor element obtained by sequentially stacking a dielectric oxide film layer, a semiconductor layer and an electrically conducting layer on a surface of a valve-acting metal sintered body or electrically conducting oxide sintered body connected with an anode lead, wherein the thickness of the semiconductor layer in the vicinity of the anode lead-connection point on the sintered body face connected with an anode lead is 5 ?m or less, and also relates to an electronic circuit and electronic device using the capacitor.

Abstract: A method for producing a capacitor having a good capacitance appearance factor and a low ESR comprising, as one electrode (anode), an electric conductor having pores and having formed on the surface thereof a dielectric layer and, as the other electrode (cathode), a semiconductor layer formed on the electric conductor by energization in an electrolytic solution, the method comprising impregnating pores with a semiconductor layer-forming precursor before energization to render the concentration of semiconductor layer-forming precursor in pores higher than that of semiconductor layer-forming precursor in the electrolytic solution; a capacitor produced by the method; and an electronic circuit and an electronic device using the capacitor.

Abstract: A chip solid electrolyte capacitor with low ESR and small initial failure ratio comprising a plurality of solid electrolyte capacitor elements each produced by stacking a dielectric oxide film layer, a semiconductor layer and an electrically conducting layer in this order to form a cathode part on a surface of an anode substrate exclusive of the anode part at one end, the anode substrate comprising a sintered body of a valve-acting metal or an electrically conducting oxide or comprising the sintered body connected with a metal wire, which is a chip solid electrolyte capacitor obtained by horizontally laying the plurality of electrolyte capacitor elements in parallel with no space on a pair of oppositely disposed end parts of a lead frame such that the anode part or the metal wire and the cathode part come into contact with the lead frame, joining each element, and molding the entire with a resin while leaving outside the external terminal parts of the lead frame, wherein the volume ratio of one sintered body

Abstract: The invention relates to an arrangement for introducing gas bubbles into a liquid, a device (1) for fastening a perforated aeration membrane (2) to an aerator base plate (3) as well as to an aerator base plate (3) therefor. The aerator base plate (3) has an undercut groove (4) in at least one rim region thereof, into which a locking body (7) clamping the membrane (2) in said groove (4) fits clampingly. The locking body (7) has a generally circular cross-section. The groove (4) has an at least substantially oval cross-section. The locking body (7) is designed to be generally cylindrical.

Abstract: A niobium powder for capacitors, which contains niobium monoxide crystal or hexaniobium monoxide crystal; a sintered body thereof; and a capacitor fabricated from the sintered body as one part electrode, a dielectric material formed on the surface of the sintered body, and another part electrode provided on the dielectric material.

Abstract: A niobium powder for capacitors, having an average particle size of from 10 to 500 ?m, which is a granulated powder having an oxygen content of 3 to 9% by mass; a sintered body thereof; and a capacitor fabricated from the sintered body as one part electrode, a dielectric material formed on the surface of the sintered body, and another part electrode provided on the dielectric material. A capacitor manufactured from the sintered body of a niobium powder of the present invention is prevented from deterioration in the performance for a long period of time and has high reliability.

Abstract: The invention provides a method for producing a solid electrolytic capacitor reliable with good LC value after mounting, wherein a solid electrolytic capacitor element comprises an anode body composed of a material containing at least one selected from a group consisting of an earth-acid metal, an alloy comprising an earth-acid metal as the main component, an electrically conducting oxide of an earth-acid metal and a mixture of two or more thereof, a dielectric layer formed on the anode body by electrolytic oxidation (electrochemical formation) and comprising an oxide as the main component, a semiconductor layer formed on the dielectric layer, and an electrically conducting layer stacked on the semiconductor layer, and the solid electrolytic capacitor element is molded with a resin, cured and then applied voltage (aging) treatment, which method comprises sequentially repeating a step of leaving the resin-molded body to stand at 225 to 305° C.

Abstract: The present invention relates to a method for producing a capacitor comprising, as one electrode, an electric conductor having formed on the surface thereof a dielectric layer and, as the other electrode, a semiconductor layer formed on the electric conductor by energization using the electric conductor as the anode, wherein fine protrusions are formed on the dielectric layer before energization; a capacitor produced by the method thereof having a good capacitance appearance factor and a low ESR; and an electronic circuit and an electronic device using the capacitor.

Abstract: The present invention relates to a resin-molded chip solid electrolyte capacitor comprising a plurality of solid electrolyte capacitor elements horizontally laid in parallel with no gap on a pair of oppositely disposed end parts of a lead frame, and a fixing layer which is extending across the plurality of capacitor elements and fixing the capacitor elements with each other; and having low equivalent series resistance (ESR) and low leakage current (LC value), a production method of the same and an electronic device using the capacitor.

Abstract: A niobium hydride or niobium hydride alloy is ground at a temperature of ?200 to 30° C. in the presence of a dispersion medium to obtain a niobium powder for capacitors, having a low oxygen content, the niobium powder for capacitors is granulated to obtain a niobium granulated product for capacitors, having an average particle size of 10 to 500 ?m, the niobium powder or granulated powder for capacitors is sintered to obtain a sintered body, and a capacitor is fabricated by forming a dielectric material on the surface of the sintered body and providing another part electrode on the dielectric material, whereby a capacitor having good LC characteristics and less dispersed in the LC characteristics is obtained.

Abstract: An object of the present invention is to provide an antimony-containing niobium sintered body for a capacitor having a small specific leakage current value, an antimony-containing niobium powder for use in the sintered body, and a capacitor using the sintered body. In the present invention, an antimony-containing niobium powder having an antimony content of preferably about 0.1 to about 10 mol % and an average particle size of preferably about 0.2 to about 5 ?m is used. By using this antimony-containing niobium powder, a sintered body and a capacitor are constructed.