Abstract: A solid electrolytic capacitor is formed by stacking flat solid electrolytic capacitor elements. Negative electrode sections of a part of the solid electrolytic capacitor elements and negative electrode sections of the remaining part of the solid electrolytic capacitor elements are led out so as to be faced to each other, and are connected to the first and second negative electrode lead frames which are independent to each other, respectively. Two of negative electrode sections are insulated from each other in the solid electrolytic capacitor.

Abstract: A solid electrolytic capacitor includes an anode foil, a solid electrolyte provided on the anode foil and made of conductive polymer, and a cathode foil provided on the solid electrolyte and facing the anode foil across the solid electrolyte. The anode foil includes an anode base made of aluminum, a rough surface layer made of aluminum and provided on a surface of the anode base, and a dielectric oxide layer provided on the rough surface layer and contacting the solid electrolyte. The cathode foil includes a cathode base made of aluminum, and a nickel layer provided on a surface of the cathode base and contacting the solid electrolyte. The nickel layer faces the dielectric oxide layer of the anode foil across the solid electrolyte. The nickel layer is made of nickel and nickel oxide. This solid electrolytic capacitor has a large capacitance and a low equivalent series resistance while being inexpensive and highly reliable.

Abstract: A chip type solid electrolytic capacitor includes a capacitor element-laminate. In the capacitor element-laminate, a plurality of capacitor elements, each having an anode portion and a cathode portion, are laminated so that the anode portions of the adjacent capacitor elements are disposed in the direction opposite to each other. Anode lead terminals are joined to the bottom faces of the anode portions of the capacitor elements disposed at both ends of the capacitor element-laminate. A cathode lead terminal is joined to the bottom face of the cathode portion of the capacitor element disposed in the center of the capacitor element-laminate. An Electrically insulating exterior resin coats the capacitor element-laminate so as to expose at least a part of the bottom faces of the anode lead terminals and a part of the cathode lead terminal.

Abstract: A capacitor is provided to overcome the following problem: when plural capacitors are linked, a large coupling space is required because an anode and a cathode are brought out through the opposite ends, so that downsizing of the capacitor is difficult. The capacitor also allows easy electrical and mechanical coupling, reducing the required coupling space and unnecessary resistance. According to a structure of the capacitor, capacitor element (2) is enclosed in mechanical housing (3) having an opening sealed by terminal plate (4). Terminal slip (5), which includes rib (5b) to be coupled to one of the anode and the cathode of capacitor element (2) and terminal (5a), is insert-molded into terminal plate (4). The other of the anode and the cathode is coupled to an inner bottom face of metal housing (3). The one of the anode and the cathode is brought out through terminal (5a), and the other of the anode and the cathode is brought out through metal housing (3), thus a lower resistance is expected.

Abstract: A capacitor inspection device includes a substrate made of an insulating material, a first conductor unit and a second conductor unit arranged on the substrate, a signal input unit and a signal output unit attached to the substrate, a network analyzer and a pressurizing unit. The network analyzer has an input port connected to the signal input unit and an output port connected to the signal output unit. The first and second conductor units make contact with an anode and a cathode of a capacitor, respectively. The pressurizing unit presses the anode of capacitor onto the first conductor unit and the cathode onto the second conductor unit.

Abstract: A chip type solid electrolytic capacitor includes a capacitor element-laminate. In the capacitor element-laminate, a plurality of capacitor elements, each having an anode portion and a cathode portion, are laminated so that the anode portions of the adjacent capacitor elements are disposed in the direction opposite to each other. Anode lead terminals are joined to the bottom faces of the anode portions of the capacitor elements disposed at both ends of the capacitor element-laminate. A cathode lead terminal is joined to the bottom face of the cathode portion of the capacitor element disposed in the center of the capacitor element-laminate. An Electrically insulating exterior resin coats the capacitor element-laminate so as to expose at least a part of the bottom faces of the anode lead terminals and a part of the cathode lead terminal.

Abstract: A printed board is mounted with a chip-type solid electrolytic capacitor of a four-terminal structure where a pair of positive electrode terminals are disposed at opposite positions and a pair of negative electrode terminals are disposed at opposite positions on a mounting surface. The printed board has a pair of positive electrode patterns and a pair of negative electrode patterns to which the positive electrode terminals and negative electrode terminals of the chip-type solid electrolytic capacitor are connected, respectively. The printed board further has an inductor section that is insulated from the negative electrode patterns, and electrically connects the positive electrode patterns.

Abstract: A digital signal processor includes a component for processing a digital signal, a power line for supplying a power to the component, and a decoupling capacitor connected between the power line and a ground. The decoupling capacitor has an equivalent series resistance larger than zero and not larger than 25 m? at 100 kHz and an equivalent series inductance larger than zero and not larger than 800 pH at 500 MHz. This digital signal processor does not generate a lot of digital noise, and has a small, thin size.

Abstract: A solid electrolytic capacitor is formed by stacking flat solid electrolytic capacitor elements. Negative electrode sections of a part of the solid electrolytic capacitor elements and negative electrode sections of the remaining part of the solid electrolytic capacitor elements are led out so as to be faced to each other, and are connected to the first and second negative electrode lead frames which are independent to each other, respectively. Two of negative electrode sections are insulated from each other in the solid electrolytic capacitor.

Abstract: A chip type solid electrolytic capacitor includes a capacitor element-laminate. In the capacitor element-laminate, a plurality of capacitor elements, each having an anode portion and a cathode portion, are laminated so that the anode portions of the adjacent capacitor elements are disposed in the direction opposite to each other. Anode lead terminals are joined to the bottom faces of the anode portions of the capacitor elements disposed at both ends of the capacitor element-laminate. A cathode lead terminal is joined to the bottom face of the cathode portion of the capacitor element disposed in the center of the capacitor element-laminate. An Electrically insulating exterior resin coats the capacitor element-laminate so as to expose at least a part of the bottom faces of the anode lead terminals and a part of the cathode lead terminal.

Abstract: A solid electrolytic capacitor includes an anode foil, a solid electrolyte provided on the anode foil and made of conductive polymer, and a cathode foil provided on the solid electrolyte and facing the anode foil across the solid electrolyte. The anode foil includes an anode base made of aluminum, a rough surface layer made of aluminum and provided on a surface of the anode base, and a dielectric oxide layer provided on the rough surface layer and contacting the solid electrolyte. The cathode foil includes a cathode base made of aluminum, and a nickel layer provided on a surface of the cathode base and contacting the solid electrolyte. The nickel layer faces the dielectric oxide layer of the anode foil across the solid electrolyte. The nickel layer is made of nickel and nickel oxide. This solid electrolytic capacitor has a large capacitance and a low equivalent series resistance while being inexpensive and highly reliable.

Abstract: A chip-type filter has a laminated body formed by stacking a plurality of capacitor elements, a pair of positive electrode terminals, a pair of negative electrode terminals, insulating outer resin, and an inductor section. The laminated body includes capacitor elements in a first group and capacitor elements in a second group, the positive electrode sections in both groups are disposed on the opposite sides with respect to the negative electrode sections. Positive electrode terminals are electrically connected to the positive electrode sections of capacitor elements in the first group and those of capacitor elements in the second group, respectively. Negative electrode terminals are electrically connected to the negative electrode sections in the laminated body, and are disposed at both ends of the direction crossing the connecting direction between the positive electrode terminals. The inductor section is insulated from the negative electrode sections and couples the positive electrode terminals.

Abstract: A printed board is mounted with a chip-type solid electrolytic capacitor of a four-terminal structure where a pair of positive electrode terminals are disposed at opposite positions and a pair of negative electrode terminals are disposed at opposite positions on a mounting surface. The printed board has a pair of positive electrode patterns and a pair of negative electrode patterns to which the positive electrode terminals and negative electrode terminals of the chip-type solid electrolytic capacitor are connected, respectively. The printed board further has an inductor section that is insulated from the negative electrode patterns, and electrically connects the positive electrode patterns.

Abstract: A digital signal processor includes a component for processing a digital signal, a power line for supplying a power to the component, and a decoupling capacitor connected between the power line and a ground. The decoupling capacitor has an equivalent series resistance larger than zero and not larger than 25 m? at 100 kHz and an equivalent series inductance larger than zero and not larger than 800 pH at 500 MHz. This digital signal processor does not generate a lot of digital noise, and has a small, thin size.

Abstract: A chip-type filter has a laminated body formed by stacking a plurality of capacitor elements, a pair of positive electrode terminals, a pair of negative electrode terminals, insulating outer resin, and an inductor section. The laminated body includes capacitor elements in a first group and capacitor elements in a second group, the positive electrode sections in both groups are disposed on the opposite sides with respect to the negative electrode sections. Positive electrode terminals are electrically connected to the positive electrode sections of capacitor elements in the first group and those of capacitor elements in the second group, respectively. Negative electrode terminals are electrically connected to the negative electrode sections in the laminated body, and are disposed at both ends of the direction crossing the connecting direction between the positive electrode terminals. The inductor section is insulated from the negative electrode sections and couples the positive electrode terminals.

Abstract: A chip type solid electrolytic capacitor includes a capacitor element-laminate. In the capacitor element-laminate, a plurality of capacitor elements, each having an anode portion and a cathode portion, are laminated so that the anode portions of the adjacent capacitor elements are disposed in the direction opposite to each other. Anode lead terminals are joined to the bottom faces of the anode portions of the capacitor elements disposed at both ends of the capacitor element-laminate. A cathode lead terminal is joined to the bottom face of the cathode portion of the capacitor element disposed in the center of the capacitor element-laminate. An Electrically insulating exterior resin coats the capacitor element-laminate so as to expose at least a part of the bottom faces of the anode lead terminals and a part of the cathode lead terminal.

Abstract: A capacitor is provided to overcome the following problem: when plural capacitors are linked, a large coupling space is required because an anode and a cathode are brought out through the opposite ends, so that downsizing of the capacitor is difficult. The capacitor also allows easy electrical and mechanical coupling, reducing the required coupling space and unnecessary resistance. According to a structure of the capacitor, capacitor element (2) is enclosed in mechanical housing (3) having an opening sealed by terminal plate (4). Terminal slip (5), which includes rib (5b) to be coupled to one of the anode and the cathode of capacitor element (2) and terminal (5a), is insert-molded into terminal plate (4). The other of the anode and the cathode is coupled to an inner bottom face of metal housing (3). The one of the anode and the cathode is brought out through terminal (5a), and the other of the anode and the cathode is brought out through metal housing (3), thus a lower resistance is expected.

Abstract: A capacitor is provided to overcome the following problem: when plural capacitors are linked, a large coupling space is required because an anode and a cathode are brought out through the opposite ends, so that downsizing of the capacitor is difficult. The capacitor also allows easy electrical and mechanical coupling, reducing the required coupling space and unnecessary resistance. According to a structure of the capacitor, capacitor element (2) is enclosed in mechanical housing (3) having an opening sealed by terminal plate (4). Terminal slip (5), which includes rib (5b) to be coupled to one of the anode and the cathode of capacitor element (2) and terminal (5a), is insert-molded into terminal plate (4). The other of the anode and the cathode is coupled to an inner bottom face of metal housing (3). The one of the anode and the cathode is brought out through terminal (5a), and the other of the anode and the cathode is brought out through metal housing (3), thus a lower resistance is expected.

Abstract: A capacitor inspection device includes a substrate made of an insulating material, a first conductor unit and a second conductor unit arranged on the substrate, a signal input unit and a signal output unit attached to the substrate, a network analyzer and a pressurizing unit. The network analyzer has an input port connected to the signal input unit and an output port connected to the signal output unit. The first and second conductor units make contact with an anode and a cathode of a capacitor, respectively. The pressurizing unit presses the anode of capacitor onto the first conductor unit and the cathode onto the second conductor unit.

Abstract: A solid electrolytic capacitor includes a planar solid electrolytic capacitor element having anode and cathode portions; anode and cathode terminals; and insulating coating resin. The anode terminal is electrically connected at the top surface thereof to the anode portion. The cathode terminal is electrically connected at the top surface side thereof to the cathode portion. The coating resin integrally coats the capacitor element so as to expose the bottom surfaces of the anode and cathode terminals. The anode and cathode terminals are disposed as close to each other as not more than 3 mm. The anode and cathode terminals have stair steps on both sides thereof and are connected to the anode and cathode portions at joint faces, respectively. The anode joint faces and the cathode joint faces are coated with coating resin. The solid electrolytic capacitor is provided with the anode joint faces and/or the cathode joint faces.