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36results about How to "Low ESL" patented technology
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Multilayer capacitor
ActiveUS20090154055A1Simple mannerLow costFixed capacitor electrodesFixed capacitor dielectricEngineeringElectrical and Electronics engineering
In a capacitor body of a multilayer capacitor, one second capacitor portion is sandwiched between two first capacitor portions. An ESR is controlled by setting a width of lead portions of third and fourth internal electrodes disposed in the second capacitor portion to be less than that of lead portions of first and second internal electrodes disposed in the first capacitor portions and by changing ratios between the first and second capacitor portions in the width of the lead portions and in the number of stacked internal electrodes. In the first capacitor portions, current paths from the internal electrodes to an external terminal electrode are widely distributed so that the first capacitor portions have a relatively low ESL, and accordingly, the ESL of the entire multilayer capacitor is reduced.
Owner:MURATA MFG CO LTD
Solid electrolytic capacitor and electric circuit
InactiveUS7031141B2Large capacitanceLow ESRSolid electrolytic capacitorsLiquid electrolytic capacitorsElectrolysisOptoelectronics
A solid electrolytic capacitor includes a cathode including a solid electrolytic layer, an anode, and a dielectric layer provided between the cathode and the anode. The anode includes an anode body, an input anode terminal and an output anode terminal. A bypass current path for causing circuit current to detour around the anode body is formed between the input anode terminal and the output anode terminal.
Owner:ROHM CO LTD
Monolithic capacitor and mounting structure thereof
ActiveUS20070121275A1Low ESLHigh suppression characteristicsMultiple fixed capacitorsFixed capacitor dielectricCapacitanceEngineering
A monolithic capacitor includes a main capacitor unit having first capacitor portions and a second capacitor portion arranged in a direction of lamination, with the first capacitor portion located towards at least one end in the direction of lamination, so that the first capacitor portion is located closer to a mounting surface than the second capacitor portion. The number of pairs of third and fourth lead-out portions for third and fourth internal electrodes in the second capacitor portion is less than the number of pairs of first and second lead-out portions for first and second internal electrodes in the first capacitor portion, so that the first capacitor portion contributes to decreasing ESL while the second capacitor portion contributes to increasing ESR.
Owner:MURATA MFG CO LTD
Multilayer chip capacitor and circuit board device including the same
ActiveUS20090139757A1Small sizeLow ESLFixed capacitor electrodesFinal product manufactureElectrical polarityEngineering
A multilayer chip capacitor including: a capacitor body having a lamination structure where a plurality of dielectric layers are laminated and including a first capacitor part and a second capacitor part arranged according to a lamination direction; first to fourth outer electrodes formed on side surfaces of the capacitor body, the first and third outer electrodes having the same polarity and the second and fourth outer electrodes having the same polarity opposite to that of the first outer electrode; and one or more connection conductor lines formed on an outer surface of the capacitor body and connecting the first outer electrode to the third outer electrode or connecting the second outer electrode to the fourth outer electrode.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Method of implementing low ESL and controlled ESR of multilayer capacitor
ActiveUS20080310078A1Low ESLFixed capacitor electrodesStacked capacitorsEquivalent series inductanceElectrical polarity
Disclosed is a method of implementing controlled equivalent series resistance (ESR) having low equivalent series inductance (ESL) of a multi-layer chip capacitor which includes a plurality of internal electrodes each having first polarity or second polarity which is opposite to the first polarity, and dielectric layers each disposed between the internal electrodes of the first polarity and the second polarity, wherein the internal electrodes having the first polarity and the internal electrodes having the second polarity are alternated at least once to form one or more blocks being stacked.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Multilayer capacitor
ActiveUS20100128413A1Low ESLEasy to implementMultiple fixed capacitorsFixed capacitor electrodesCapacitorElectrical and Electronics engineering
In a capacitor body, a single second capacitor unit is interposed between two first capacitor units. The width direction dimension of each of extended portions of first and second internal electrodes included in the first capacitor unit is larger than the width direction dimension of each of extended portions of third and fourth internal electrodes included in the second capacitor unit. The area of each of the respective portions of a first opposed portion of the first internal electrode and a second opposed portion of the second internal electrode, the respective portions being opposed to each other, is smaller than the area of each of respective portions of opposed portions of the third and fourth internal electrodes, the respective portions being opposed to each other. Thus, a multilayer capacitor has a characteristic that is a combination of a low-ESL characteristic of the first capacitor unit and a high-ESR characteristic of the second capacitor.
Owner:MURATA MFG CO LTD
Ceramic capacitor
ActiveUS20170345566A1Low ESLReduce thicknessFixed capacitor electrodesFixed capacitor dielectricCeramic capacitorOptoelectronics
A ceramic capacitor which is low in ESL and suitable for being built into a substrate includes a first external electrode, a second external electrode and a third external electrode. Each of the first, second and third external electrodes include a sputtering electrode film. Each of the outermost layers of the first, second and third external electrodes contains Cu.
Owner:MURATA MFG CO LTD
Multilayered chip capacitor and printed circuit board having embedded multilayered chip capacitor
InactiveUS7230815B2Improve equipment reliabilityReduce parasitic capacitanceFixed capacitor electrodesFixed capacitor dielectricEquivalent series inductanceParasitic capacitance
A multilayered chip capacitor (MLCC) includes internal electrodes and external electrodes formed to be perpendicular to the internal electrodes, whereby parasitic capacitance is reduced, resulting in no parallel resonance frequency effects. In addition, the MLCC has a capacitor structure, which provides a first surface and a second surface formed in a stacking direction of the dielectric layers in the capacitor body as a top surface and a bottom surface. Hence, in the thin capacitors having the same size, the number of internal electrode layers is increased, thereby reducing the equivalent series resistant (ESR) and equivalent series inductance (ESL). Further, the printed circuit board (PCB) having an embedded MLCC is easily manufactured.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Multilayer capacitor having low equivalent series inductance and controlled equivalent series resistance
ActiveUS8120891B2Low ESLSimple wayFixed capacitor electrodesFixed capacitor dielectricPower flowEquivalent series inductance
In a capacitor body of a multilayer capacitor, one second capacitor portion is sandwiched between two first capacitor portions. An ESR is controlled by setting a width of lead portions of third and fourth internal electrodes disposed in the second capacitor portion to be less than that of lead portions of first and second internal electrodes disposed in the first capacitor portions and by changing ratios between the first and second capacitor portions in the width of the lead portions and in the number of stacked internal electrodes. In the first capacitor portions, current paths from the internal electrodes to an external terminal electrode are widely distributed so that the first capacitor portions have a relatively low ESL, and accordingly, the ESL of the entire multilayer capacitor is reduced.
Owner:MURATA MFG CO LTD
Solid electrolytic capacitor
ActiveUS20070019366A1Reduce distanceLower ESLSolid electrolytic capacitorsLiquid electrolytic capacitorsElectrolysisEngineering
A solid electrolytic capacitor including capacitor unit having cathode frame coupled to cathode part of capacitor element, and anode frames formed at the opposite sides of capacitor unit sandwiching cathode frame, and coupled to anode part of capacitor element. Flat parts provided at the opposite ends of anode terminals are coupled to anode frames. Flat part provided in the center of cathode terminal is coupled to cathode frame. Capacitor unit is covered with coating resin. The solid electrolytic capacitor has simplified structure and a lower ESL.
Owner:PANASONIC CORP
Multilayer chip capacitor
InactiveUS7262952B2Increase currentPrevents excessive reductionFixed capacitor electrodesFixed capacitor dielectricDielectric layerCapacitor
The invention provides a multilayer chip capacitor reduced in ESL. A capacitor body has a plurality of dielectric layers stacked in a thickness direction. A plurality of first and second internal electrodes are separated from one another by the dielectric layers within the capacitor body. Each of the first internal electrodes opposes each of the second internal electrodes. Each of the first and second internal electrodes includes at least two leads extending toward any side of the capacitor body. Also, a plurality of external electrodes are formed on an outer surface of the capacitor body and connected to the internal electrodes via the leads. Further, vertically adjacent ones of the leads having the same polarity extend in different directions at a predetermined angle. The leads of the first and second internal electrodes are disposed adjacent to and alternate with those of the second internal electrodes.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Solid electrolytic capacitor
ActiveUS7277271B2Low ESLReduce distanceSolid electrolytic capacitorsLiquid electrolytic capacitorsElectrolysisEngineering
A solid electrolytic capacitor includes a capacitor unit having a cathode frame coupled to a cathode part of a capacitor element, and anode frames formed at the opposite sides of the capacitor unit sandwiching a cathode frame, and coupled to an anode part of the capacitor element. Flat parts provided at the opposite ends of anode terminals are coupled to the anode frames. A flat part provided in the center of a cathode terminal is coupled to the cathode frame. The capacitor unit is covered with coating resin. The solid electrolytic capacitor has a simplified structure and a lower ESL.
Owner:PANASONIC CORP
Multilayer chip capacitor
InactiveUS20060285271A1Minimizes increase in magnetic fluxPrevents mutual inductanceFixed capacitor electrodesFixed capacitor dielectricEngineeringDielectric layer
The invention provides a multilayer chip capacitor reduced in ESL. A capacitor body has a plurality of dielectric layers stacked in a thickness direction. A plurality of first and second internal electrodes are separated from one another by the dielectric layers within the capacitor body. Each of the first internal electrodes opposes each of the second internal electrodes. Each of the first and second internal electrodes includes at least two leads extending toward any side of the capacitor body. Also, a plurality of external electrodes are formed on an outer surface of the capacitor body and connected to the internal electrodes via the leads. Further, vertically adjacent ones of the leads having the same polarity extend in different directions at a predetermined angle. The leads of the first and second internal electrodes are disposed adjacent to and alternate with those of the second internal electrodes.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Multilayer capacitor having low ESL and easily controllable ESR
ActiveUS8315033B2Low ESLEasy to implementMultiple fixed capacitorsFixed capacitor electrodesEngineeringCapacitor
In a capacitor body, a single second capacitor unit is interposed between two first capacitor units. The width direction dimension of each of extended portions of first and second internal electrodes included in the first capacitor unit is larger than the width direction dimension of each of extended portions of third and fourth internal electrodes included in the second capacitor unit. The area of each of the respective portions of a first opposed portion of the first internal electrode and a second opposed portion of the second internal electrode, the respective portions being opposed to each other, is smaller than the area of each of respective portions of opposed portions of the third and fourth internal electrodes, the respective portions being opposed to each other. Thus, a multilayer capacitor has a characteristic that is a combination of a low-ESL characteristic of the first capacitor unit and a high-ESR characteristic of the second capacitor.
Owner:MURATA MFG CO LTD
Power ring pulse capacitor
Owner:SB ELECTRONICS
Multilayer capacitor
ActiveUS7466535B2High ESRIncreased bandwidthFixed capacitor dielectricStacked capacitorsCapacitorLow impedance
In a multilayer capacitor including a capacitor body, first capacitor portions and a second capacitor portion are arranged in the direction of lamination. While a resonant frequency of the first capacitor portions is set to be greater than a resonant frequency of the second capacitor portion so that the first capacitor portions contribute to low impedance, an ESR per layer of the second capacitor portion is set to be greater than an ESR per layer of the first capacitor portions so that the second capacitor portion contributes to high ESR. Further, a combined ESR of the first capacitor portions is set to be substantially equal to a combined ESR of the second capacitor portion.
Owner:MURATA MFG CO LTD
Multi-layered circuit board and semiconductor device
InactiveUS20160262260A1Low ESLCross-talk/noise/interference reductionSemiconductor/solid-state device detailsDielectricEngineering
A multi-layered circuit board includes a first insulating layer, a second insulating layer, and a sheet capacitor that is located between the first insulating layer and the second insulating layer. The sheet capacitor includes a pair of electrodes that sandwich a dielectric. Lead wirings continue to the electrodes, respectively. The lead wirings are disposed on an opposite side of the first or the second insulating layer with respect to the sheet capacitor to overlap the electrodes when viewed from a stacking direction of the multi-layered circuit board. Because the lead wirings are arranged to overlap the electrodes in the stacking direction of the multi-layered circuit board, an ESL of the sheet capacitor is maintained low.
Owner:NODA SCREEN
Multilayer chip capacitor and circuit board device including the same
ActiveUS8050012B2Small sizeLow ESLFixed capacitor electrodesFinal product manufactureEngineeringDielectric layer
A multilayer chip capacitor including: a capacitor body having a lamination structure where a plurality of dielectric layers are laminated and including a first capacitor part and a second capacitor part arranged according to a lamination direction; first to fourth outer electrodes formed on side surfaces of the capacitor body, the first and third outer electrodes having the same polarity and the second and fourth outer electrodes having the same polarity opposite to that of the first outer electrode; and one or more connection conductor lines formed on an outer surface of the capacitor body and connecting the first outer electrode to the third outer electrode or connecting the second outer electrode to the fourth outer electrode.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Multilayer capacitor having low equivalent series inductance and controlled equivalent series resistance
ActiveUS20120113560A1Low ESLSimple wayStacked capacitorsFixed capacitor terminalsEquivalent series inductanceElectric current flow
Owner:MURATA MFG CO LTD
Multilayer capacitor
ActiveUS20080204968A1High ESRIncreased bandwidthFixed capacitor dielectricStacked capacitorsCapacitorLow impedance
In a multilayer capacitor including a capacitor body, first capacitor portions and a second capacitor portion are arranged in the direction of lamination. While a resonant frequency of the first capacitor portions is set to be greater than a resonant frequency of the second capacitor portion so that the first capacitor portions contribute to low impedance, an ESR per layer of the second capacitor portion is set to be greater than an ESR per layer of the first capacitor portions so that the second capacitor portion contributes to high ESR. Further, a combined ESR of the first capacitor portions is set to be substantially equal to a combined ESR of the second capacitor portion.
Owner:MURATA MFG CO LTD
Multilayer capacitor
ActiveUS20070025057A1Lower ESLConvenient distanceFixed capacitor electrodesStacked capacitorsEngineeringDielectric layer
A multilayer capacitor comprised of dielectric layers stacked to form a device body in which a plurality of first internal electrode layers and a plurality of second internal electrode layers formed in planar shapes are alternately arranged while being separated through the dielectric layers, wherein the first external electrodes and second external electrodes are arranged at only a first end face of the device body, lead use columnar electrodes connect the internal electrode layers stacked close to the first end face of the device body and external electrodes, interlayer connection use columnar electrodes connect the internal electrode layers stacked at the inside of the device body, and the interlayer connection use columnar electrodes have cross-sectional areas larger than the cross-sectional areas of the lead use columnar electrodes.
Owner:TDK CORPARATION
Multilayer capacitor
ActiveUS7586174B2Reduce connection resistanceLow ESLFixed capacitor electrodesStacked capacitorsEngineeringDielectric layer
A multilayer capacitor comprised of dielectric layers stacked to form a device body in which a plurality of first internal electrode layers and a plurality of second internal electrode layers formed in planar shapes are alternately arranged while being separated through the dielectric layers, wherein the first external electrodes and second external electrodes are arranged at only a first end face of the device body, lead use columnar electrodes connect the internal electrode layers stacked close to the first end face of the device body and external electrodes, interlayer connection use columnar electrodes connect the internal electrode layers stacked at the inside of the device body, and the interlayer connection use columnar electrodes have cross-sectional areas larger than the cross-sectional areas of the lead use columnar electrodes.
Owner:TDK CORPARATION
Feedthrough capacitor mounted structure
ActiveUS7881040B2Keeping ESL of the substrate lowLow ESLAnti-noise capacitorsMultiple fixed capacitorsElectrical conductorCapacitor
Owner:TDK CORPARATION
Multilayer capacitor
The invention provides a multilayer capacitor. On a capacitor body (8), a first capacitor portion (11) and a second capacitor portion (12) are arranged in parallel in the layered direction. While setting the resonance frequency of the first capacitor portion (11) higher than that of the second capacitor portion (12) so that the first capacitor portion (11) contributes to low ESL, ESR of each layer of the second capacitor portion (12) is set higher than ESR of each layer of the first capacitor portion (11) so that the second capacitor portion (12) contributes to high ESR. Furthermore, combined ESR of the first capacitor portion (11) is set equal to or substantially equal to the combined ESR of the second capacitor portion (12), thus realizing low ESL and high ESR, and widening the zone capable of reducing resistance.
Owner:MURATA MFG CO LTD
Method for producing conductive polymer and method for producing solid electrolyte capacitor
InactiveUS20150183925A1Low ESLElectrolysis componentsSolid electrolytic capacitorsOrganic solventConductive polymer
A solid electrolytic capacitor is obtained by a method comprising dissolving a polymerizable material for being converted into a conductive polymer in a water-soluble organic solvent to obtain a solution, adding the solution to water while homogenizing the solution to obtain a sol, immersing an anode body having a dielectric layer in the surface of the anode body in the sol, and applying voltage using the anode body as a positive electrode and a counter electrode as a negative electrode placed in the sol to electropolymerize the polymerizable material. An electropolymerizable liquid for producing a conductive polymer, the liquid composed of a sol comprising water, a water-soluble organic solvent, and a polymerizable material for being converted into the conductive polymer.
Owner:SHOWA DENKO KK
ESD protection device
ActiveUS20150364461A1Low ESLTotal current dropSemiconductor/solid-state device detailsSolid-state devicesZener diodeEngineering
An ESD protection device includes a zener diode, and a series circuit of diodes and a series circuit of diodes that are connected in parallel with the zener diode. At the connection point between the diodes, an Al electrode film is formed on the surface of a Si substrate, and at the connection point between diodes, an Al electrode film is formed on the surface of the Si substrate. The diodes are formed on the surface of the Si substrate, and the diodes are formed in the thickness direction of the Si substrate. The Si substrate has a longitudinal direction and a shorter direction orthogonal to the longitudinal direction in planar view, and the Al electrode films are formed respectively at both ends in the shorter direction of the Si substrate. Thus, provided is an ESD protection device which suppresses the ESL, and keeps the clamp voltage low.
Owner:MURATA MFG CO LTD
Electronic component
ActiveCN102385988ALow ESLEasy to installAnti-noise capacitorsFixed capacitor electrodesElectrical conductorElectronic component
In an electronic component, an external electrode (14a) includes a side surface electrode (16a) provided on a side surface (S5) and a substantially rectangular principal surface electrode (18a) that is connected to the side surface electrode (16a) and provided on a principal surface (S1) so as to be in contact with a (C1) corner of the principal surface (S1). An external electrode (14b) includes a side surface electrode (16b) that is connected to a capacitor conductor and provided on a side surface (S6) and a substantially rectangular principal surface electrode (18b) that is connected to the side surface electrode (16b) and provided on the principal surface (S1) so as to be in contact with a corner (C2), which is located opposite to the corner (C1), the principal surface electrode (18b) facing the principal surface electrode (16b) in an x-axis direction, in which long sides of the principal surface extend. Therefore, low ESL can be realized and installation in a circuit board is facilitated.
Owner:MURATA MFG CO LTD
Electronic component
ActiveUS20170229245A1Improve reliabilityLarge capacitanceAnti-noise capacitorsFixed capacitor electrodesElectronic componentElectron
An electronic component having excellent reliability includes a first lateral surface and two external electrodes on an outermost side in a length direction among three or more external electrodes on the first lateral surface that are thicker than the other external electrode. On a second lateral surface, two external electrodes that are located on the outermost side in the length direction among three or more external electrodes disposed on the second lateral surface are thicker than the other external electrode.
Owner:MURATA MFG CO LTD
Method of implementing low ESL and controlled ESR of multilayer capacitor
ActiveUS8117584B2Low ESLFixed capacitor electrodesStacked capacitorsEquivalent series inductanceElectrical polarity
Disclosed is a method of implementing controlled equivalent series resistance (ESR) having low equivalent series inductance (ESL) of a multi-layer chip capacitor which includes a plurality of internal electrodes each having first polarity or second polarity which is opposite to the first polarity, and dielectric layers each disposed between the internal electrodes of the first polarity and the second polarity, wherein the internal electrodes having the first polarity and the internal electrodes having the second polarity are alternated at least once to form one or more blocks being stacked.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Multi-layered circuit board and semiconductor device
InactiveUS10149379B2Low ESLSemiconductor/solid-state device detailsCross-talk/noise/interference reductionDielectricEngineering
A multi-layered circuit board includes a first insulating layer, a second insulating layer, and a sheet capacitor that is located between the first insulating layer and the second insulating layer. The sheet capacitor includes a pair of electrodes that sandwich a dielectric. Lead wirings continue to the electrodes, respectively. The lead wirings are disposed on an opposite side of the first or the second insulating layer with respect to the sheet capacitor to overlap the electrodes when viewed from a stacking direction of the multi-layered circuit board. Because the lead wirings are arranged to overlap the electrodes in the stacking direction of the multi-layered circuit board, an ESL of the sheet capacitor is maintained low.
Owner:NODA SCREEN
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