1672 results about "Ceramic capacitor" patented technology

The invention discloses a temperature and pressure sensor and a manufacturing method thereof, the temperature and pressure sensor comprises a support assembly formed by an inner support and a thermistor through an injection molding process, two pin copper wires of the thermistor are welded to an insertion piece of the inner support, and a plastic supporting structure wrapping the thermistor and the inner support is formed through injection molding; one end of a PIN needle of the terminal button is connected with an external plugging port; one end of a conductive circuit of the flexible wire board is respectively welded with the PIN of the ceramic capacitor and the insertion piece of the inner bracket, and the other end of the conductive circuit of the flexible wire board is welded with the other end of the PIN of the terminal button; a through hole is formed between the support assembly and the shell, a medium makes contact with the ceramic capacitor through the through hole, the ceramic capacitor transmits a pressure signal to the outside through the flexible wire board and the end button, the thermistor senses the temperature of the medium through the plastic supporting structure, and a temperature signal is transmitted to the outside through the inserting piece, the flexible wire board and the end button. The thermistor is effectively prevented from losing efficacy due to medium impact, and meanwhile, the structural process is relatively simple and easy to assemble.

The utility model discloses a temperature and pressure sensor for a new refrigerant, which comprises a shell with a built-in pressure sensing component, the shell is externally connected with an electric appliance connector connected with the pressure sensing component, and the shell is internally provided with an NTC (Negative Temperature Coefficient) thermistor connected with the pressure sensing component; the pressure sensing component is a five-pin ceramic capacitor, two pins of the five-pin ceramic capacitor are temperature measuring pin bodies which penetrate through a ceramic capacitor body and are connected with the NTC thermistor, and a pressure-resistant protective ring which surrounds the temperature measuring pin bodies is arranged between the pressure sensing component and the shell in an extruding manner. According to the utility model, the five-pin ceramic capacitor is used as a pressure sensing component, two pins for temperature measurement are designed to be of a straight-through type structure, and the withstand voltage protection ring with a double-ring-layer withstand voltage protection structure is arranged, so that the withstand voltage capability of the temperature and pressure sensor is improved.

Technologies for components embedded in a substrate core are disclosed. In one embodiment, power components such as deep trench capacitors and multi-layer ceramic capacitors (MLCCs) are disposed in a cavity defined in a substrate core for a circuit board of an integrated circuit package, such as a processor. The power components are stacked on top of each other, allowing for the stack of power components to match the height of the substrate core, even when the height of the individual power components is less than the height of the substrate core. Configuring the power components in this manner can provide mechanical stability to the power components and substrate core and provide power to a semiconductor die mounted on the circuit board.

The invention discloses a high-voltage multi-core ceramic capacitor and a preparation method thereof, and the multi-core ceramic capacitor comprises a pedestal, two connection frames which are oppositely disposed on the pedestal, and a plurality of capacitor modules which are sequentially arranged in the length direction of the connection frames. The capacitor module comprises a plurality of capacitors which are sequentially connected in series between two connecting frames and a plurality of series connecting sheets which are respectively arranged between two adjacent capacitors, and the connecting frames are connected with the opposite capacitors; the capacitor comprises a capacitor body, two parallel frames oppositely arranged on the two sides of the capacitor body, a potting shell used for installing the capacitor body and a potting layer arranged in the potting shell and wrapping the capacitor body. The specific structure of the capacitor module is limited to be matched with the connecting frame, so that parallel capacity increasing and series voltage dividing of the multiple capacitor chips are achieved, other capacitor modules are not affected after a certain capacitor module fails, and the market requirement of higher-voltage products is met.

A ceramic capacitor with double L-shaped pins comprises two supports arranged oppositely, one or more ceramic chips arranged between the two supports and two first solder layers respectively arranged between the end portions of the one or more ceramic chips and the opposite supports, and each support comprises two frames arranged symmetrically and a second solder layer arranged between the two frames. According to the invention, the structure of the ceramic capacitor is limited, and the two symmetrically arranged frames are mutually welded through the welding flux to serve as the support, so that the welding area of the prepared support and the PCB is doubled, the welding strength of the prepared ceramic capacitor is improved, the bonding strength of the ceramic capacitor and the PCB is better, and the service life of the ceramic capacitor is prolonged. Compared with a single-frame ceramic capacitor, the ceramic capacitor can resist higher-strength vibration, improves the reliability of a product, and can be applied to high-reliability occasions such as space flight and aviation.

Provided is a multi-layered ceramic capacitor in which a penetration-type electrode unit, which is manufactured in a cone shape, passes through a plurality of internal electrodes in a collective stack of the internal electrodes and the dielectric layers, so that the capacitor is miniaturized and the electrical reliability thereof is improved.

In a multilayer ceramic capacitor, a segregation amount of silicon and magnesium on an outer layer side of an outermost internal electrode layer is larger than a segregation amount of silicon and magnesium on an inner layer side of the outermost internal electrode layer, and when a region defined by an existence region of the outermost internal electrode layer and a segregation region of silicon and magnesium in contact with the outermost internal electrode layer is defined as a first region, a line edge roughness of an outer layer side of the first region is larger than a line edge roughness of an inner layer side of the first region.

The invention provides a high-voltage low-loss dielectric material and a preparation method thereof, and relates to the technical field of high-voltage ceramic capacitors, and the high-voltage low-loss dielectric material comprises the following raw materials in parts by mass: 35-38 parts of barium titanate, 20-29.5 parts of strontium titanate, 15-17.5 parts of titanium dioxide, 9-12 parts of bismuth oxide, 3-4 parts of zirconium oxide, 0.8-1.0 part of X, 1.2-1.4 parts of antimony oxide, 1-1.2 parts of calcium carbonate and the like. The preparation method of the dielectric material comprises the following steps: 1, preparing the dielectric material; melting calcium carbonate, magnesium oxide, zinc oxide and the like, performing water quenching, and performing ball-milling granulation to obtain zinc borosilicate glass powder; uniformly mixing the zinc borosilicate glass powder with barium titanate, strontium titanate, titanium dioxide and the like, and granulating to obtain oxide powder; and tabletting and sintering the oxide powder to obtain the high-pressure low-loss dielectric material. The high-voltage low-loss dielectric material is high in dielectric constant, small in dielectric loss, high in compression strength and good in high-temperature stability, and the preparation method is simple.

A multilayer ceramic capacitor includes a multilayer body and outer electrodes on two surfaces of the multilayer body. The multilayer body includes an inner-layer portion and two outer-layer portions. The inner-layer portion includes first dielectric layers laminated in the lamination direction and a first inner electrode between the first dielectric layers. Each outer-layer portion includes at least one second dielectric layer and a second inner electrode in contact with the at least one second dielectric layer. A length of the second inner electrode is less than a length of the first inner electrode, or a width of the second inner electrode is less than a width of the first inner electrode. When each outer-layer portion is divided into two equal regions, a porosity of a region near the inner-layer portion is less than a porosity of a region farther from the inner-layer portion.

The utility model belongs to the field of automation equipment, and particularly relates to a feeding device and ceramic capacitor processing equipment. The feeding device comprises a first material taking structure, a material moving structure and a conveying structure, a first station and a second station are arranged on the two sides of the conveying structure, the first station is used for storing first materials, the conveying structure is used for driving the material moving structure to move back and forth between the first station and the second station, and the material moving structure is used for grabbing the first materials. The second station is used for storing second materials and receiving first materials grabbed by the material moving structure, the first material taking structure is arranged on the second station and located above the second materials, the first material taking structure is used for grabbing the second materials and driving the second materials to ascend and descend, and the material moving structure is further used for bearing the second materials at the first material taking structure. And the second material is driven to move to the first station. The feeding device can solve the problem of how to improve the feeding efficiency and the production efficiency.

A multilayer ceramic capacitor includes: a capacitor body comprising a dielectric layer and an internal electrode layer; and an external electrode disposed on an outside surface of the capacitor body, wherein the capacitor body includes an active portion where the dielectric layer and the internal electrode layer are alternately disposed, side margin portions disposed at both side end portions of the active portion facing each other, and bonding portions disposed between the active portion and the side margin portions, and at least one of the active portion or the side margin portions includes a barium titanate-based main ingredient including barium (Ba) and titanium (Ti), and gallium (Ga).

A multilayer ceramic capacitor includes a multilayer body having a dimensional relationship of the dimension in the width direction is greater than the dimension in the length direction which is greater than the dimension in the height direction. The dimension in the width direction of a third surface portion of a first external electrode is smaller than the dimension in the width direction of a first surface portion. The dimension in the width direction of an eighth surface portion of a second external electrode is smaller than the dimension in the width direction of a sixth surface portion. The dimensions in the height direction of a fourth surface portion and a fifth surface portion of the first external electrode are smaller than the dimension in the height direction of the first surface portion.

The present invention provides a multilayer ceramic electronic component, such as a multilayer ceramic capacitor, that is highly reliable. In a multilayer ceramic electronic component (1): a plurality of internal electrode layers have a first internal electrode layer (6a) exposed from a first end surface (E1) and a second internal electrode layer (6b) exposed from a second end surface (E2); a laminate (2) has an inner layer part in which the first internal electrode layer (6a) and the second internal electrode layer (6b) face each other in the lamination direction (T); the particle diameter of ceramic contained on a first lateral surface (S1) side and a second lateral surface (S2) side of the laminate (2) is smaller than the particle diameter of the ceramic contained in the center part of the laminate (2) in the width direction (W); and the particle diameter of the ceramic contained in the end parts of the inner layer part on the first end surface (E1) side and the second end surface (E2) side is the same as or larger than the particle diameter of the ceramic contained in the center part of the inner layer part.

The utility model relates to the technical field of ceramic capacitor production equipment, and provides a uniform material scattering mechanism for a ceramic capacitor, which comprises a base, a support rod, a top plate, a material supply box, a material channel, a material uniformizing plate, a height adjusting assembly and a straight vibrator, the material channel comprises a material guide plate, a left side plate, a right side plate and a rear side plate, the left side plate, the right side plate and the rear side plate are fixedly arranged on the material guide plate, the material uniformizing plate is located between the left side plate and the right side plate, the material uniformizing plate is further located above the material guide plate, the material guide plate is provided with multiple sections of material guide areas, material guide grooves are distributed in the material guide areas, and the material uniformizing plate is located above the material guide areas. From the material receiving opening of the material channel to the material discharging opening of the material channel, the number of the material guiding grooves of the material guiding area is increased section by section, and the width of the material guiding grooves is reduced section by section. The utility model has the advantages that the material channel with a unique structure is arranged to prevent the ceramic capacitors from being stacked, so that the ceramic capacitors are uniformly scattered on the burning net from the discharge port of the material channel, the burning net is effectively prevented from being stacked, and the sintering quality of the ceramic capacitors is improved.

The invention provides an MLCC short-circuit product defect position analysis method, and belongs to the technical field of multilayer ceramic capacitor failure analysis. The method comprises the following steps: carrying out rapid leakage current detection on MLCC products for 0.5-2 seconds, and screening out short-circuit products of which the leakage current is greater than a first preset threshold value; products with crack defects are eliminated through an acoustic scanning microscope; gradually applying increased direct-current voltage to the screened crack-free short-circuit product, monitoring leakage current in real time, and terminating the test when the sudden change amplitude of the current exceeds a second preset threshold value; then acoustic scanning is carried out on the protective cover surface and the cutting surface, and two-dimensional coordinates of defect points on the two surfaces are extracted; and calculating the three-dimensional coordinates of the defect in the MLCC through image registration and a spatial inversion algorithm. According to the method, the internal hidden short circuit defect can be identified and positioned in a non-destructive manner, the positioning precision and the analysis efficiency are improved, and the method is suitable for batch failure analysis and manufacturing process optimization.

A glass powder, a conductive paste, and a method for manufacturing a laminated ceramic capacitor are provided. The purpose of the present disclosure is to provide a general-purpose glass powder capable of obtaining sufficient adhesive properties for laminated chips constituting various laminated ceramic capacitors, and a technique relating to the same. The glass powder disclosed herein is a glass powder for use in a conductive paste, the glass powder comprising the following composition in terms of mass ratio in terms of oxides: SiO2: 6-18 wt%; b2O3: 18 wt% to 30 wt%; znO: 26 wt% to 47 wt%; al2O3: 2 wt% to 17 wt%; 10 wt% to 25 wt% of CaO, and substantially does not contain BaO.

The invention relates to the technical field of ceramic capacitor production, and discloses a mounting structure of a ceramic capacitor visual detection device, the device comprises a mounting plate, a detection camera and a ceramic capacitor main body, the bottom of the mounting plate is fixedly connected with a support frame, and two sides of the mounting plate are symmetrically and fixedly connected with side plates; a conveying belt is mounted on the inner sides of the two side plates, the sliding seat is slidably mounted at the top ends of the side plates, a connecting strip is fixedly connected to the top of the sliding seat, a top plate is fixedly connected to the top end of the connecting strip, a mounting assembly is arranged on the inner side of the sliding seat, and a positioning assembly is arranged on the outer side of the conveying belt. The mounting assembly comprises an abutting bolt and a rack, one side of the rack is fixedly connected with a pushing plate, and the problems that a small amount of dust and sundries in air may be attached to the lens part of the visual inspection camera, and if the lens part is not cleaned in time, the detection effect and the detection precision are reduced are solved.

Provided is a multilayer ceramic capacitor capable of reducing stress.　A base electrode layer 32 of an external electrode 30 in this multilayer ceramic capacitor 10 includes an end surface electrode part 40 and a wraparound electrode part 41 that wraps around at least one among a first main surface 12a, a second main surface 12b, a first side surface 12c, and a second side surface 12d from a first end surface 12e and a second end surface 12f. The wraparound electrode part 41 includes base end side parts 42 positioned on the first end surface 12e and the second end surface 12f sides, and tip side parts 43 positioned on the tip sides of the base end side parts 42 away from the first end surface 12e and the second end surface 12f. At least one tip-side adhesion interface 53a where a laminate 12 is adhered to the tip side parts 43, and at least one tip-side non-adhesion interface 53b where the laminate 12 is not adhered to the tip-side parts 43, are included in tip-side interfaces 53 of the laminate 12 facing the tip-side parts 43.

A broadband filter plate type tantalum capacitor comprises a lead frame, a tantalum core and a ceramic capacitor, a positive electrode and a negative electrode of the tantalum core are connected with a positive electrode frame and a negative electrode frame of the lead frame respectively, the positive electrode frame and the negative electrode frame are connected through the ceramic capacitor, and the tantalum core and the ceramic capacitor are of a parallel structure. According to the utility model, through the design of the lead frame and the parallel combination mode of the ceramic capacitor and the tantalum capacitor, the volume efficiency maximization of the tantalum capacitor and the volume maximization of the tantalum core are realized, the reliability and the stability of the tantalum capacitor are improved, the use is simple, and the effect is obvious.

The invention discloses a ceramic capacitive pressure sensor, which comprises a packaging shell, a commercial small circular shell is arranged on the packaging shell, a copper pipe is arranged on one side, far away from the packaging shell, of the commercial small circular shell, an electronic wire is arranged on the packaging shell in a penetrating manner, and the electronic wire is connected with the packaging shell. The insulating paper, the inner copper body and the check ring are integrally designed into the combined base with the PPS and the glass fiber wrapping the SUS metal inner container, a traditional multi-part manual assembly structure is replaced, and compared with the scheme that in the prior art, insulating paper and an inner copper body shielding cover need to be bonded, the number of parts is reduced, and the cost is reduced. The cost is reduced, meanwhile, automatic injection molding is achieved, manual assembly errors are avoided, the assembly efficiency is improved, the compression strength of the PPS composite reinforcing material is improved compared with that of traditional insulation paper, and the reliability in the high-pressure-resistant environment is ensured.

The invention relates to the technical field of dielectric ceramic powder preparation processes, in particular to a multilayer ceramic capacitor, high-activity nano barium titanate powder for the multilayer ceramic capacitor and a preparation method of the high-activity nano barium titanate powder, and the method comprises the following steps: (1) reacting soluble barium salt with a precipitator to obtain barium carbonate precursor particles with high specific surface area; (2) uniformly coating the surfaces of the barium carbonate precursor particles with nano titanium dioxide particles by using a supercritical fluid flash evaporation technology to form a composite precursor; and (3) carrying out solid-phase synthesis reaction on the composite precursor, and sintering to obtain the nano barium titanate powder. Through the synergistic effect of two means of high-activity precursor preparation and nanoscale uniform coating, the composite precursor with extremely high specific surface area, surface energy and microcosmic uniformity is prepared, the thermal sintering temperature is effectively reduced, abnormal growth of crystal grains and lattice distortion are restrained, and the preparation method has the advantages that the preparation process is simple, and the preparation cost is low. The tetragonality of the nano barium titanate powder is obviously improved.

The present application relates to the technical field of dielectric ceramic powder preparation, and particularly relates to a multilayer ceramic capacitor, a high-activity nano-barium titanate powder for the multilayer ceramic capacitor and a preparation method of the high-activity nano-barium titanate powder, the method comprising the following steps: (1) reacting a soluble barium salt with a precipitator to obtain barium carbonate precursor particles with high specific surface area; (2) uniformly coating nano-titanium dioxide particles on the surface of the barium carbonate precursor particles by using a supercritical fluid flash technology to form a composite precursor; and (3) performing a solid-phase synthesis reaction on the composite precursor and sintering to obtain nano-barium titanate powder. The present application, through the synergistic effect of the two means of "high-activity precursor preparation" and "nano-level uniform coating", prepares a composite precursor with extremely high specific surface area, surface energy and micro-uniformity, effectively reduces the heat sintering temperature, suppresses abnormal grain growth and lattice distortion, and significantly improves the tetragonality of the nano-barium titanate powder.

The invention discloses a barium zirconate titanate-based ceramic capacitor dielectric material and a preparation method thereof. The ceramic material comprises the following components: (1-x) Ba (ZryTi1-y) O3-xCa (V2 / 3Mg1 / 3) O3, ZnO and MnO2, the preparation method comprises the following steps: firstly, mixing a Ba source, a Zr source, TiO2, a Ca source, V2O5 and a Mg source, then carrying out hydrothermal reaction, carrying out suction filtration and drying on the product to prepare main crystal phase powder, then adding MnO2 and ZnO into the main crystal phase powder, and carrying out grinding, granulation, molding, glue discharging and sintering to prepare the ceramic capacitor dielectric material. According to the ceramic material disclosed by the invention, the aims of improving the dielectric temperature stability of a capacitor ceramic dielectric and reducing the dielectric loss are fulfilled through the combined action of an A and B site ion compound perovskite compound system consisting of barium zirconate titanate and calcium vanadium magnesium acid and the secondary dopant.

A multilayer ceramic capacitor includes a capacitor main body including a multilayer body in which dielectric layers and internal electrode layers are alternately laminated, and external electrodes respectively on two end surfaces of the multilayer body and connected to the internal electrode layers, an interposer at a board mounting surface of the capacitor main body, and an insulating resin film in a gap between the board mounting surface and a capacitor-facing surface of the interposer which is opposed to the board mounting surface.

A multilayer ceramic capacitor includes a multilayer body including dielectric layers and internal electrodes alternately laminated therein, and two end surfaces opposing each other in a length direction, and two side surfaces opposing each other in a width direction, and two external electrodes respectively on the two end surfaces of the multilayer body. At least one of two opposed main surfaces of the multilayer ceramic capacitor includes raised portions provided respectively on one side and another side with a middle portion of the main surface interposed therebetween. The raised portions are each raised to become thicker in the lamination direction from the middle portion toward an outer periphery of the main surface.

The purpose of the present invention is to provide a multilayer ceramic capacitor capable of suppressing peeling in a lamination direction between internal electrodes while suppressing deterioration of insulation resistance.　This multilayer ceramic capacitor according to the present invention includes: a laminate including a plurality of laminated dielectric layers and a plurality of laminated internal electrodes, and having a first surface and a second surface facing each other in the lamination direction, a third surface and a fourth surface facing each other in a first direction orthogonal to the lamination direction, and a fifth surface and a sixth surface facing each other in the lamination direction and a second direction orthogonal to the first direction; a first external electrode disposed on the third surface of the laminate; and a second external electrode disposed on the fourth surface of the laminate. The laminate includes an inner layer part. The inner layer part has a first internal electrode whose one end is exposed on the third surface, a second internal electrode whose one end is exposed on the fourth surface, an inner layer dielectric layer disposed between the first internal electrode and the second internal electrode, and a first connection part which connects first internal electrodes to each other. The first connection part is located at an end part on the fifth surface side of the first internal electrode and an end part on the sixth surface side of the first internal electrode.

The invention relates to a base metal high-voltage multilayer ceramic dielectric capacitor and a preparation method, the base metal high-voltage multilayer ceramic dielectric capacitor is formed by stacking and firing dielectric layers, and each dielectric layer comprises a dielectric layer and an electrode printed on the dielectric layer. The dielectric layer comprises the following raw materials: a BMYT main matrix, an NN material, magnesium oxide, manganous-manganic oxide, zirconium dioxide, calcium carbonate, strontium carbonate and rare earth oxide; through the raw material composition and the preparation method of the ceramic dielectric capacitor, the prepared ceramic dielectric capacitor has excellent performances of high dielectric constant, high voltage resistance, stable dielectric-temperature characteristic curve, low loss, high insulation resistance, long-term high-voltage reliability and the like under the condition of high dielectric thickness (30 microns before firing).

The invention discloses a low-howling multilayer ceramic dielectric capacitor and a preparation method thereof, and an end sealing tool, and relates to the technical field of cleaning capacitor structures and preparation methods and end sealing, the capacitor comprises a positive end electrode, a negative end electrode and an inner electrode, and the inner electrode comprises a plurality of inner electrode layers stacked in the Z-axis direction; when current passes through the capacitor, the direction of the current is the horizontal X-axis direction; when the vertical direction is the Y-axis direction, the Z-axis direction is perpendicular to the X-axis direction and the Y-axis direction; the inter-plate electrostriction stress transfer direction of the inner electrode layer is an XZ plane, and the electrostriction stress transfer direction between the positive end electrode and the negative end electrode is an XY plane. According to the invention, the direction of the terminal electrode is changed, so that the purpose of dispersing and guiding the electrostrictive stress of each component in the MLCC under the conditions that hardware is not changed, the space height is not influenced and the ceramic material is not changed is achieved.

Provided is a multilayer ceramic capacitor of which the specifications or the like can be identified on the basis of a lamination direction view.　A multilayer ceramic capacitor 10 according to the present invention is characterized by comprising: a laminate having a first main face and a second main face opposite each other in the lamination direction, a first lateral face and a second lateral face opposite each other in a first direction orthogonal to the lamination direction, and a first end face and a second end face opposite each other in a second direction orthogonal to the lamination direction and the first direction; a first external electrode disposed on the first end face and the first main face; a second external electrode disposed on the second end face and the first main face; a third external electrode disposed on the first end face and the first main face; and a fourth external electrode disposed on the second end face and the first main face, wherein provided that flatness D1 is the maximum distance among the distances in the lamination direction x (vertical) between the first main face surface and a point where the first main face intersects with the first end face or the second end face and flatness D2 is the maximum distance among the distances in the lamination direction x (vertical) between the first main face surface and a point where the second main face intersects with the first end face or the second end face at the halfway position of the width connecting the first lateral face and the second lateral face of the laminate, then flatness D1 ≥ flatness D2.

The invention relates to the technical field of capacitor manufacturing, and discloses a block lamination method of a multilayer ceramic capacitor, which comprises the following steps of: feeding protective films, cutting the protective films in a protective film conveying process, stacking a plurality of protective films on a protective film stripping table, and simultaneously adsorbing the plurality of protective films to a lamination carrying table; laminating a bottom protective film, feeding a dielectric film roll, and cutting in a dielectric film conveying process; the dielectric diaphragms are laminated, and the in-place identification mode of the dielectric diaphragms is optimized; laminating a top protective film; the invention also discloses a block lamination device of the multilayer ceramic capacitor, the protective film conveying mechanism is provided with a first vertical cutting assembly and a first transverse cutting assembly, and the dielectric film conveying mechanism is provided with a second vertical cutting assembly and a second transverse cutting assembly; according to the invention, the lamination efficiency of the block lamination is improved, so that the dielectric diaphragm only needs to be provided with a mark point and does not need to be provided with a stripping mark point, the width required by the dielectric diaphragm is reduced, and materials are saved and dangerous waste materials are reduced.