CN103387388A - Ferrite material, small large-current laminated-chip wideband magnetic beads, and preparation method thereof - Google Patents
Ferrite material, small large-current laminated-chip wideband magnetic beads, and preparation method thereof Download PDFInfo
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- CN103387388A CN103387388A CN201210149866XA CN201210149866A CN103387388A CN 103387388 A CN103387388 A CN 103387388A CN 201210149866X A CN201210149866X A CN 201210149866XA CN 201210149866 A CN201210149866 A CN 201210149866A CN 103387388 A CN103387388 A CN 103387388A
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Abstract
The invention discloses a ferrite material, small large-current laminated-chip wideband magnetic beads, and a preparation method thereof. The ferrite main materials comprise: 49-55mol% of Fe2O3, 25-35mol% of ZnO, 4-8mol% of CuO, 8-15mol% of NiO, 0.1-0.6mol% of Co3O4, 1-3mol% of Bi2O3, and 0.5-1.5mol% of Nb2O5. The magnetic bead preparation method comprises the steps of ferrite slurry preparation, material band dry preparation, cutting, ferrite material sheet punching, ferrite material sheet printing, ferrite material sheet lamination, cutting and forming, and the like. With the ferrite material, magnetic saturation degree is improved, and direct current resistance is reduced, such that larger current can be withstood. According to the magnetic bead preparation method, production period is shortened, and production efficiency is improved. The volume of the magnetic beads is small. The magnetic beads have good electromagnetic interference inhibition capacity from 100MHz to higher than 1GHz.
Description
Technical field
The invention belongs to the inductance technical field, concrete a kind of Ferrite Material, small-sized large electric current lamination sheet type wideband magnetic bead and its preparation method of relating to.
Background technology
Magnetic bead is a kind of electronic devices and components for the high frequency noise on Inhibitory signal line, supply lead and spike interference and absorption electrostatic pulse.Along with the development of present digital circuit high speed, clock requency is more and more higher, requires the range of frequency of electromagnetic interference is expanded to wide-band, until more than 1GHz.The pulse waveform of high-speed digital signal is more precipitous, so that fundamental frequency improves.Therefore the chip ferrite magnetic bead of high-speed digital circuit of requiring to pack into must meet: the frequency range below 100MHz keeps low resistance | Z|, so that do not cause the distortion of signal waveform; Have high resistance at 100MHz in the wide-band of 1GHz | Z|, can effectively suppress broadband electromagnetical and disturb.
Present small-sized magnetic bead, because its volume is little, adopts vertical structure to superpose from bottom to up, and electrode coil is longer, makes direct current resistance (more than 1.5 Ω) bigger than normal, and the maximum current of its ability is only 100mA or less, therefore can't satisfy the demands.Perhaps magnetic bead, in use because bias current is excessive, makes ferrite near saturated, and the successful that magnetic permeability decline causes suppressing high frequency noise weakens.Existing domestic the appearance is to adopt the mode of shunting in parallel to improve the anti-electric current of magnetic bead, but its mode in parallel can't reach high resistance | the Z| value, what its manufacture craft adopted is dried wet processing, its manufacture craft is coarse by the way technique of printing pre-opened hole position, position, hole size accuracy all is not well controlled, therefore be only suitable for the larger product of specification.
At present, make the pure wet processing of the most of employing of chip magnetic bead, wet method generally adopts curtain coating mode moulding diaphragm, and its operation fixedly is unfavorable for flexible operating, exists the production cycle long, the problem that production efficiency is low.
Summary of the invention
The object of the invention is to solve the low shortcoming of little, the anti-electric current of magnetic bead range of frequency of existing Ferrite Material made, a kind of Ferrite Material is provided.
Another object of the present invention is to provide a kind of manufacture method of small-sized large electric current laminated type wideband magnetic bead, production cycle length, inefficient shortcoming while overcoming prior art manufacturing laminated type wideband magnetic bead.
Another purpose of the present invention is to provide a kind of small-sized large electric current lamination sheet type wideband magnetic bead, overcomes the low shortcoming of little, the anti-electric current of magnetic bead range of frequency in prior art.
The technical scheme that the present invention solves its technical problem employing is:
A kind of Ferrite Material wherein comprises main material molar percentage component:
And a kind of manufacture method of small-sized large electric current lamination sheet type wideband magnetic bead comprises the following steps:
Ferrite Material claimed in claim 1 is mixed with solvent, binding agent, softening agent ball milling, make the ferrite slurry; The weight ratio of described Ferrite Material, solvent, binding agent, softening agent is (55 ~ 59): (34 ~ 38): (4 ~ 6): (1 ~ 3);
Adopt the scraper method of forming that described ferrite slurry is coated in PET release film surface, drying, obtain the ferrite membrane strip;
Described ferrite membrane strip is cut into multi-disc ferrite tablet, offer fairlead and connecting hole on every described ferrite tablet, and make in adjacent two ferrite tablets, according to the stacked project organization order of the ferrite membrane sheet of magnetic bead, the fairlead on a ferrite tablet is corresponding with the connecting hole position of another ferrite tablet;
Printed conductor on every described ferrite tablet one surface, print lead at the fairlead place, described wire one end extends to lead and with described lead conducting, is connected, and the other end extends to connecting hole;
The stacked order of ferrite membrane sheet according to magnetic bead, the ferrite tablet of described printed conductor is stacked gradually, and make in adjacent two ferrite tablets, lead on one ferrite tablet is fastened in the connecting hole of another ferrite tablet, realizes the wire series connection conducting in adjacent two ferrite tablets;
According to dimensional requirement, the ferrite tablet after printing, lamination is cut.
The present invention further provides a kind of small-sized large electric current lamination sheet type wideband magnetic bead, described small-sized large electric current lamination sheet type wideband magnetic bead is prepared by the manufacture method of above-mentioned small-sized large electric current lamination sheet type wideband magnetic bead.
Beneficial effect of the present invention is:
(1) Ferrite Material provided by the invention passes through Co
3O
4, Bi
2O
3And Nb
2O
5Doping, effectively improved ferritic magnetic saturation and reduced direct current resistance, to reach anti-larger electric current effect;
(2) dry process provided by the invention is made Stacked magnetic bead, prepare slurry, dry process strip in procedure for preparation, the operations such as strip and printing that cut, punch are independent process, the material of getting ready can be placed the stock, can ignore while calculating the production cycle, and dry process need not toast and can directly cut, greatly shortened the production cycle, thereby enhanced productivity;
(3) small-sized large electric current Stacked magnetic bead provided by the present invention adopts vertical winding stack structure, has reduced stray capacitance, has improved resonant frequency, make this magnetic bead at 100MHz to good inhibition electromagnetic interference capability is arranged more than 1GHz.
Description of drawings
Fig. 1 is the manufacture method schematic flow sheet of the small-sized large electric current Stacked magnetic bead of the embodiment of the present invention;
Fig. 2 is the perspective view of the small-sized large electric current Stacked magnetic bead of the embodiment of the present invention;
Fig. 3 is the explosive view of the middle-size and small-size large electric current Stacked magnetic bead structure of Fig. 2.
In figure: the connecting hole of the connecting hole of 1-lead-out tablet, 11-wire, 13-lead-out tablet, 2-lamination layer, 21,22,23,24-ferrite diaphragm, 211,221,231,241-wire, 212,222,232,242-lead, 213,223,233,243-ferrite diaphragm.
Embodiment
, in order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The equivalent electrical circuit of small-sized large electric current Stacked magnetic bead of the present invention is antiresonant circuit.Frequency when resonant frequency refers to resonance that capacitance that inductance (magnetic bead) distributes and inductance (magnetic bead) produce, cancel out each other and resonance condition namely occurs be when inductance and electric capacity: ω L-ω C[R
2+ (ω L
2)]=0, can calculate resonant frequency thus:
Substitution ω=2 π f can obtain:
Formula can be found out in the situation that impedance R and inductance L are constant thus, and capacitor C and the resonant frequency f relation that is inversely proportional to can improve resonant frequency f by reducing capacitor C.
, based on above-mentioned theory, the invention provides a kind of Ferrite Material that can improve magnetic saturation and improve anti-large current characteristic.This Ferrite Material comprises following molar percentage component:
Ferrite Material in above-described embodiment passes through at Fe
2O
3, Co adulterates in the main base material that forms of the components such as ZnO, CuO and NiO
3O
4, Bi
2O
3And Nb
2O
5Deng doping component, and adjust Co
3O
4, Bi
2O
3And Nb
2O
5Content, effectively improved the magnetic saturation of this Ferrite Material, reduce direct current resistance, have anti-more large current characteristic, be applied in magnetic bead hereinafter, the successful that can make magnetic bead suppress high frequency noise strengthens.Through recording, the galvanic current resistance of this Ferrite Material is below 1.0 Ω, and anti-electric current is up to 250～700mA.
Preferred Co
3O
4Content is preferably 0.2～0.3mol%, Bi
2O
3Content is preferably 1～2mol%, Nb
2O
5Content is preferably 0.8～1.2mol%.Magnetic saturation and the Nai Geng large current characteristic that can make the further Ferrite Material of Ferrite Material energy of this preferred content, reduce galvanic current resistance.Through recording, the galvanic current resistance of the preferred embodiment Ferrite Material is below 1.0 Ω, and anti-electric current is up to 250～700mA.
The present invention also provides a kind of manufacture method of with short production cycle, small-sized large electric current lamination sheet type wideband magnetic bead that effect is high, and its manufacturing process as shown in Figure 1, please refer to Fig. 2 to Fig. 3 simultaneously.The manufacture method of this small-sized large electric current lamination sheet type wideband magnetic bead comprises the following steps:
S01. the preparation of ferrite slurry: the Ferrite Material of above-mentioned formula is mixed with solvent, binding agent, softening agent ball milling, make the ferrite slurry; Wherein, the weight ratio of Ferrite Material, solvent, binding agent, softening agent is (55 ~ 59): (34 ~ 38): (4 ~ 6): (1 ~ 3);
S02. dry process strip: adopt the scraper method of forming that the ferrite slurry of step S01 preparation is coated in PET release film surface, drying, obtain the ferrite membrane strip;
S03. the ferrite tablet cuts, punches: the ferrite membrane strip of step S02 preparation is cut into multi-disc ferrite tablet, offer fairlead and connecting hole on every described ferrite tablet, and make in adjacent two ferrite tablets, according to the stacked project organization order of the ferrite membrane sheet of magnetic bead, the fairlead on a ferrite tablet is corresponding with another ferritic connecting hole position;
S04. print the ferrite tablet: printed conductor on every described ferrite tablet one surface, print lead at the fairlead place, described wire one end extends to lead and with described lead conducting, is connected, and the other end extends to connecting hole;
S05. stacked ferrite tablet: according to the stacked order of ferrite membrane sheet of magnetic bead, to stack gradually through the ferrite tablet of step S04 printed conductor, and make in adjacent two ferrite tablets, lead on one ferrite tablet is fastened in the connecting hole of another ferrite tablet, realizes the wire series connection conducting in adjacent two ferrite tablets;
S06. excision forming:, according to dimensional requirement, will cut through step S05 printing, ferrite tablet after stacked.
Particularly, in above-mentioned steps S01, each component preferred content in the formula of Ferrite Material and formula as described above,, in order to save length, does not repeat them here.Preferably, the weight ratio of this Ferrite Material, solvent, binding agent, softening agent is 57: 36: 5: 2.Wherein, solvent is preferably methylethylketone, ethanol binary azeotropic solvent, and binding agent is preferably polyvinyl butyral acetal (PVB), and softening agent is preferably dioctyl phthalate (DOP) (DOP).This softening agent and binding agent can effectively improve the Ferrite Material intensity bonding on PET release film surface, prevent that Ferrite Material from printing the cracking of cutting after the type that builds up or sintering.Wherein, the contriver finds by research, suitable adjustment softening agent and the ratio of consumption of binder, improve Ferrite Material the bonding intensity in PET release film surface except effectively effectively making, can also effectively avoid in the cutting process of step S06 hereinafter under the squeezing of cutters each magnetic bead precursor deficiency that bonding die can't disperse after bonding i.e. cutting together again, the weight ratio of this softening agent and binding agent is preferably 0.4～0.5: 1.These both preferred ratios can effectively overcome under the squeezing of cutters each magnetic bead precursor bonding deficiency together again.
In above-mentioned steps S02, the preparation of this ferrite membrane strip can be on the dry method pocket builder evenly be scraped the ferrite slurry of above-mentioned steps S01 preparation on the surface of PET film with the scraper method of forming, and the PET film that will be coated with the ferrite slurry under the pulling of spool by being provided with the oven for drying of temperature curve.Adopt the ferrite membrane strip even thickness of this dry process, without cracking, free of pinholes, without lines and have good toughness and intensity.The ferrite membrane strip of this dry process can reach 3～5 months indoor sealing stock, can use flexibly at any time, and the technique for preparing magnetic bead with existing wet method is compared, and has saved significantly the production cycle of the front operation of magnetic bead preparation.As preferred embodiment, this ferrite slurry is coated in PET film surface, after to be dried, the ferrite slurry forms ferrite material layer on PET film surface, thickness to this ferrite material layer of product of the present invention is preferably 10～100 μ m, 20～30 μ m more preferably, this preferred thickness can make coil electrode between layers have less stray capacitance, obtains high resistance | the Z| value.Study discovery through the contriver, the stray capacitance that between layers coil electrode exists if the Ferrite Material layer thickness is partially thin is excessive, and impact reduces self-resonance frequence, does not reach the inhibition electromagnetic interference effect of wideband; Reduce coil electrode mutual inductance between layers if the Ferrite Material layer thickness is partially thick, can't accomplish higher impedance | the Z| value.
In this step S02, release film can adopt this area release film commonly used, as the PET release film.In order to make the ferrite membrane strip flawless, this drying is preferred first through natural volatilization, then the oven dry of 60 ~ 90 ℃; Wherein, the time of naturally volatilizing is changeable, and not strict restriction, be not preferably 6 minutes in the time of the oven dry of 60 ~ 90 ℃.The ferrite membrane strip that obtains is standby.
In above-mentioned steps S03, cutting of ferrite membrane strip is that the ferrite membrane strip that will prepare in above-mentioned steps S02 is loaded on clipper to cut into and meets laminated forming size ferrite tablet, for example, the size of this ferrite tablet by cutting acquisition can be to cut out 200mm * 160mm, but should be appreciated that, 200mm * 160mm is not unique size of ferrite tablet, can also, according to actual production, adjust flexibly the size of ferrite tablet.
In this step S03, drilling process is the lamination order according to the ferrite diaphragm between the lead-out tablet 1 shown in Fig. 1,2 and laminated sheet 2, that is to say according to the link position of each lamination of film figure of design, offer fairlead and connecting hole on the ferrite tablet by cutting acquisition.Wherein, in two adjacent ferrite tablets, according to the stacked project organization order of the ferrite membrane sheet of magnetic bead, the fairlead on a ferrite tablet is corresponding with another ferritic connecting hole position.in Fig. 2, one connecting hole 13 of lead-out tablet 1 is corresponding with the fairlead of ferrite diaphragm 21, the connecting hole 213 of ferrite diaphragm 21 is corresponding with the fairlead of ferrite diaphragm 22, the connecting hole 223 of ferrite diaphragm 22 is corresponding with the fairlead of ferrite diaphragm 23, the connecting hole 233 of ferrite diaphragm 23 is corresponding with the fairlead of ferrite diaphragm 24, , , , wherein, ferrite diaphragm 21, ferrite diaphragm 22, ferrite diaphragm 23, the position of the fairlead of ferrite diaphragm 24 respectively with the position of the lead 212 of ferrite diaphragm 21, the position of the lead 222 of ferrite diaphragm 22, the position of the lead 232 of ferrite diaphragm 23, the location overlap of the lead 242 of ferrite diaphragm 24.According to this corresponding relation, fairlead and connecting hole are offered in corresponding position on every ferrite tablet.
The preferred employing laser of offering of this fairlead and connecting hole is offered, as first set up corresponding punching document on the laser-beam drilling machine system, with the ferrite tablet through cutting smooth be put into the punching platform on, laser-beam drilling machine is launched high-octane laser in the punching corresponding position of platform after carrying out the punching document command, fairlead place and the connection hole of ferrite tablet are punched, form respectively fairlead and connecting hole.Adopt laser to offer connecting hole, compare by the way of printing pre-opened hole position with existing dried wet processing, can control to the aperture of connecting hole less, be controlled at below 100 μ m, precision is higher, is controlled at below 10 μ m, thereby makes the magnetic bead specification of embodiment of the present invention preparation less, volume as the magnetic bead of embodiment of the present invention preparation can be contracted to 1005 specifications, that is to say 1.0 * 0.5 * 0.5mm.And existing dried wet processing is coarse by the way technique of printing pre-opened hole position, position, hole size and precision all are not well controlled, thereby cause and existing wet processing can only prepare the magnetic bead product of the not high larger specification of accuracy requirement, and, the volume of existing large electric current wideband magnetic bead can only, for 1608 specifications, that is to say 1.6 * 0.8 * 0.8mm.
, in order to enhance productivity, can offer more fairlead and connecting hole on a slice ferrite tablet.After subsequent technique is processed, can produce simultaneously a plurality of magnetic bead precursors hereinafter described like this.
In above-mentioned steps S04, printed conductor can adopt the full-automatic printer of this area to carry out and should brush.The material of printed conductor and lead is the silver slurry, and this silver slurry contains the silver-colored particle that particle diameter is 0.2～0.8 μ m and slabbing.This particle diameter is that the silver-colored particle of 0.2～0.8 μ m and slabbing is because particle is little, and because silver-colored particle is sheet, increased the contact area between silver-colored particle, make between particle contact tightr, thereby make the wire of printing and lead conductivity be significantly improved, further reduce direct current resistance, improve the effect of its anti-larger electric current.Other components of this silver slurry and content adopt commonly used the getting final product in this area, there is no special requirement.
In above-mentioned steps S05, that the ferrite tablet after above-mentioned steps S04 prints is stacked according to the lamination order of the ferrite diaphragm between the lead-out tablet 1 shown in Fig. 1,2 and laminated sheet 2.Before this step S05 is stacked, should first the release film in the ferrite tablet be separated, the structure after stacked is as shown in Figure 2,3.Lead-out tablet 1, ferrite diaphragm 21, ferrite diaphragm 22, ferrite diaphragm 23 and ferrite diaphragm 24 stack gradually, wherein, the lead 212 of ferrite diaphragm 21 is fastened in a connecting hole 13 of lead-out tablet 1, and by this lead 212, realizes being connected with wire 11 conductings on lead-out tablet 1; The lead 222 of ferrite diaphragm 22 is fastened in ferrite diaphragm 21 connecting holes 213, and by this lead 222, realizes being connected with wire 211 conductings on ferrite diaphragm 21; The lead 232 of ferrite diaphragm 23 is fastened in ferrite diaphragm 22 connecting holes 223, and by this lead 232, realizes being connected with wire 221 conductings on ferrite diaphragm 22; The lead 242 of ferrite diaphragm 24 is fastened in ferrite diaphragm 23 connecting holes 233, and by this lead 242, realizes being connected with wire 231 conductings on ferrite diaphragm 23; According to this corresponding relation, the ferrite diaphragm after ferrite diaphragm 24 repeats ferrite diaphragm 21,22,23,24 annexations, does not repeat them here.
After this step S05 was stacked, the wire on each ferrite diaphragm was integrated with regard to the series connection that is spiral type.
Preferably, in order to improve the production efficiency of magnetic bead, above-mentioned steps S04 and step S05 can adopt the chip-type laminated formation system of dry method will print and laminate and be formed as one, and as seal, build up the type system.This system is with accurate video contraposition, full-automatic printer, drying oven, automatic control program etc.The ferrite tablet of the connecting hole that punched is laminated on support plate after by the video contraposition, prints laminated forming after having debugged printing screen plate and contraposition.
In above-mentioned steps S06, be to adopt vertical cutting to above-mentioned steps through printing, the cutting of ferrite tablet after stacked, obtain meeting the magnetic bead precursor of size.When offering more multi-link hole simultaneously on every ferrite tablet,, through printing, after stacked and cutting technique, can obtain simultaneously a plurality of magnetic bead precursors.
Further, the contriver finds under study for action, and through the vertical cutting of step S06 the time, cutting process easily displacement causes interior electrode to expose, and each magnetic bead precursor is again together bonding under the squeezing of cutters, i.e. cutting bonding die afterwards can't disperse.Therefore, for fear of cutting process, because of the interior electrode that displacement causes, expose deficiency, be included in before the cutting in this step S06 on lead-out tablet 1 surface of an end of magnetic bead precursor and paste the step of the auxiliary excision forming of one deck wheat paraffin paper at least., because this wheat paraffin paper viscous force is strong, effectively prevented the displacement that causes at cutting process, thereby effectively avoided interior electrode to expose.Certainly, wheat paraffin paper can also adopt other material substitution of this area, as long as it is identical with the wheat paraffin paper of the embodiment of the present invention to substitute the effect that the other materials of wheat paraffin paper plays, wheat paraffin paper is all to the other materials enlightenment that possesses skills.As for the deficiency that can't disperse of bonding die after each magnetic bead precursor under the squeezing at cutters bonding i.e. cutting together again, can be overcome by adjusting the ratio of softening agent and consumption of binder in above-mentioned steps S01, be preferably 0.4～0.45 as the weight ratio of softening agent and binding agent: 1.These both preferred ratios can effectively overcome and squeeze under the squeezing of cutters each magnetic bead precursor bonding deficiency together again.
Further, also comprise carry out binder removal sintering, chamfering to obtain the magnetic bead precursor after above-mentioned steps S01 processes to step S06, be coated with end electrode, the operations such as silver ink firing, tempering, plating, sorting test and packing, thereby obtain the magnetic bead of the embodiment of the present invention.Wherein, binder removal sintering, chamfering, be coated with the operations such as end electrode, silver ink firing, tempering, plating, sorting test and packing and only need get final product according to this area method commonly used.
From the above, the above-mentioned dry process that provides is made small-sized large electric current laminated sheet wideband magnetic bead magnetic bead, prepare slurry, dry process strip in procedure for preparation, the operations such as strip and printing that cut, punch are independent process, the material of getting ready can be placed the stock, can ignore while calculating the production cycle, and dry process need not toast and can directly cut, and has greatly shortened the production cycle, thereby has enhanced productivity.Preferably, adopt size and precision that laser boring can well control punch, thereby make the magnetic bead volume by above-mentioned dry process preparation can narrow down to 1.0 * 05 * 05mm.The step of the wheat paraffin paper of setting up before cutting has effectively prevented the displacement that causes at cutting process, thereby has effectively avoided interior electrode to expose, and has improved the qualification rate of product.
Thus, the embodiment of the present invention also provides a kind of small-sized large electric current laminated sheet wideband magnetic bead magnetic bead above-mentioned Ferrite Material and that adopt above-mentioned dry process preparation that contains, its structure as shown in Figure 2,3, this small-sized large electric current lamination sheet type wideband magnetic bead comprises the lamination layer 2 that is formed by stacking by the ferrite diaphragm of at least two, also be laminated with respectively lead-out tablet 1 in lamination layer 2 both ends of the surface, the connecting hole 13 that this lead-out tablet 1 is provided with the wire 11 that can strengthen the conducting effect and is opened in wire 11 end points.Wherein, ferrite diaphragm in lamination layer 2 offers fairlead and connecting hole, be printed with wire on a surface of ferrite diaphragm and between this fairlead and connecting hole, print lead at the fairlead place, this wire one end extends to lead and with described lead conducting, is connected, and the other end extends to connecting hole.Wire in adjacent two ferrite tablets in lamination layer 2 realizes that by lead conducting connects, and like this, the wire on each ferrite diaphragm in lamination layer 2 is connected in one with regard to the conducting that is spiral type.In addition, the wire that is spiral type in lamination layer 2 is that the lead by the ferrite diaphragm of lamination layer 2 end faces is fastened in the connecting hole 13 of lead-out tablet 1, realizes connecting with the wire 11 of lead-out tablet 1 conducting.
Particularly, in the stacked relation of lead-out tablet 1 and lamination layer 2, lamination layer 2 in the stacked relation of ferrite diaphragm and the wire in lead-out tablet 1 11 and lamination layer 2 the wire annexation on the ferrite diaphragm shown in Figure 3.Lead-out tablet 1, ferrite diaphragm 21, ferrite diaphragm 22, ferrite diaphragm 23 and ferrite diaphragm 24 stack gradually.Wherein, ferrite diaphragm 21, ferrite diaphragm 22, ferrite diaphragm 23 and ferrite diaphragm 24 and other ferrite diaphragms that does not indicate have formed lamination layer 2 together.In lamination layer 2, the lead 212 of ferrite diaphragm 21 is fastened in a connecting hole 13 of lead-out tablet 1, and by this lead 212, realizes being connected with wire 11 conductings on lead-out tablet 1; The lead 222 of ferrite diaphragm 22 is fastened in ferrite diaphragm 21 connecting holes 213, and by this lead 222, realizes connecting with the wire 211 on ferrite diaphragm 21 conducting; The lead 232 of ferrite diaphragm 23 is fastened in ferrite diaphragm 22 connecting holes 223, and by this lead 232, realizes connecting with the wire 221 on ferrite diaphragm 22 conducting; The lead 242 of ferrite diaphragm 24 is fastened in ferrite diaphragm 23 connecting holes 233, and by this lead 242, realizes connecting with the wire 231 on ferrite diaphragm 23 conducting; According to this corresponding relation, the ferrite diaphragm after ferrite diaphragm 24 repeats ferrite diaphragm 21,22,23,24 annexations, does not repeat them here.The lamination layer 2 ferrite diaphragm by each layer so stacked, make wire in the ferrite diaphragm be being connected into of spiral type and be integrated.Offer 4 connecting holes 13 on lead-out tablet 1, be printed with the wire 11 of the strengthened conducting effect that is X-type between 4 connecting holes 13.Be fastened in a connecting hole 13 of lead-out tablet 1 with the lead 212 of the stacked ferrite diaphragm 21 of lead-out tablet 1, and realization is connected with the conducting of wire 11.Like this, draw at the wire two ends that are spiral type in the lamination layer 2 just wire 11 of the lead-out tablet 1 by being layered in lamination layer 2 both ends of the surface.
Like this, contain the magnetic bead of said structure owing to adopting above-mentioned Ferrite Material as the ferrite diaphragm, effectively improved the magnetic saturation of this ferrite diaphragm, wire adopts above-mentioned silver slurry to print and forms, reduce its direct current resistance, have anti-more large current characteristic, the successful that can make thus magnetic bead suppress high frequency noise strengthens, and through recording anti-electric current, is 250～700mA.Laser boring is preferably adopted in the hole that preferred ferrite diaphragm is offered, size and the precision of good control punch, thus make the volume of embodiment magnetic bead own can narrow down to 1.0 * 05 * 05mm.Lamination layer 2 in magnetic bead adopts vertical winding stack structures, has reduced stray capacitance, has improved resonant frequency, at 100MHz to good inhibition electromagnetic interference is arranged more than 1GHz.
These are only preferred embodiment of the present invention,, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. Ferrite Material wherein comprises main material molar percentage component:
2. the manufacture method of a small-sized large electric current lamination sheet type wideband magnetic bead comprises the following steps:
Ferrite Material claimed in claim 1 is mixed with solvent, binding agent, softening agent ball milling, make the ferrite slurry; The weight ratio of described Ferrite Material, solvent, binding agent, softening agent is (55 ~ 59): (34 ~ 38): (4 ~ 6): (1 ~ 3);
Adopt the scraper method of forming that described ferrite slurry is coated in the release film surface, drying, obtain the ferrite membrane strip;
Described ferrite membrane strip is cut into multi-disc ferrite tablet, offer fairlead and connecting hole on every described ferrite tablet, and make in adjacent two ferrite tablets, according to the stacked project organization order of the ferrite membrane sheet of magnetic bead, the fairlead on a ferrite tablet is corresponding with the connecting hole position of another ferrite tablet;
Printed conductor on every described ferrite tablet one surface, print lead at the fairlead place, described wire one end extends to lead and with described lead conducting, is connected, and the other end extends to connecting hole;
The stacked order of ferrite membrane sheet according to magnetic bead, the ferrite tablet of described printed conductor is stacked gradually, and make in adjacent two ferrite tablets, lead on one ferrite tablet is fastened in the connecting hole of another ferrite tablet, realizes the wire series connection conducting in adjacent two ferrite tablets;
According to dimensional requirement, the ferrite tablet after printing, lamination is cut.
3. the manufacture method of small-sized large electric current lamination sheet type wideband magnetic bead according to claim 2, it is characterized in that: to before printing, ferrite tablet after stacked cut, also be included in the step that the auxiliary excision forming of wheat paraffin paper is pasted on the ferrite tablet surface that is in end face.
According to claim 2 to 3 arbitrary described small-sized large electric current lamination sheet type wideband magnetic bead manufacture method, it is characterized in that: the thickness of described ferrite membrane strip is 10～100 μ m.
According to claim 2 to 3 arbitrary described small-sized large electric current lamination sheet type wideband magnetic bead manufacture method, it is characterized in that: in the step of the described ferrite membrane strip of preparation, described drying is first through natural volatilization, then the oven dry of 60 ~ 90 ℃.
According to claim 2 to 3 arbitrary described small-sized large electric current lamination sheet type wideband magnetic bead manufacture method, it is characterized in that: offer the step of fairlead and connecting hole on described ferrite tablet in, described fairlead and connecting hole are to adopt laser to offer to form.
7. the manufacture method of small-sized large electric current lamination sheet type wideband magnetic bead according to claim 6, it is characterized in that: the aperture of described fairlead and connecting hole is below 100 μ m.
According to claim 2 to 3 arbitrary described small-sized large electric current lamination sheet type wideband magnetic bead manufacture method, it is characterized in that: in the step of printed conductor and lead, described wire and lead are to adopt the silver slurry to print to form, described silver slurry contains silver-colored particle, described silver-colored particle is sheet, and its particle diameter is 0.2～0.8 μ m.
9. small-sized large electric current lamination sheet type wideband magnetic bead, it is characterized in that: described small-sized large electric current lamination sheet type wideband magnetic bead is prepared from by the arbitrary described small-sized large electric current lamination sheet type wideband magnetic bead manufacture method of claim 1～8.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106486238A (en) * | 2016-09-13 | 2017-03-08 | 深圳振华富电子有限公司 | A kind of Stacked magnetic bead and preparation method thereof |
| CN106542815A (en) * | 2015-09-21 | 2017-03-29 | 西酉电子科技（上海）有限公司 | A kind of method for making ferrite adhesive-free area |
| CN106653275A (en) * | 2016-09-13 | 2017-05-10 | 深圳振华富电子有限公司 | Laminated chip magnetic bead and preparation method thereof |
| CN109910163A (en) * | 2017-12-13 | 2019-06-21 | 昊佰电子科技（上海）有限公司 | A kind of ferrite bound edge part manufacture craft |
| CN111446076A (en) * | 2020-05-19 | 2020-07-24 | 惠州市宏业兴电子有限公司 | Method for producing laminated magnetic beads |
| CN111489890A (en) * | 2019-01-28 | 2020-08-04 | 深圳市麦捷微电子科技股份有限公司 | Manufacturing method of patch power inductor |
| CN113658789A (en) * | 2021-08-18 | 2021-11-16 | 广东风华邦科电子有限公司 | Preparation method for improving current resistance of sheet type multilayer thick silver magnetic bead |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1479327A (en) * | 2003-07-03 | 2004-03-03 | 深圳市大唐电子有限公司 | High impedance large current piece type magnetic pearl and its manufacturing method |
| CN1906715A (en) * | 2004-12-20 | 2007-01-31 | 株式会社村田制作所 | Laminated ceramic electronic component and method for manufacturing same |
| CN102390985A (en) * | 2011-08-06 | 2012-03-28 | 江苏华兴电子有限公司 | Broadband and high-magnetic-permeability ferrite teflon tape and production method thereof |
-
2012
- 2012-05-07 CN CN201210149866.XA patent/CN103387388B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1479327A (en) * | 2003-07-03 | 2004-03-03 | 深圳市大唐电子有限公司 | High impedance large current piece type magnetic pearl and its manufacturing method |
| CN1906715A (en) * | 2004-12-20 | 2007-01-31 | 株式会社村田制作所 | Laminated ceramic electronic component and method for manufacturing same |
| CN102390985A (en) * | 2011-08-06 | 2012-03-28 | 江苏华兴电子有限公司 | Broadband and high-magnetic-permeability ferrite teflon tape and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 江东亮等: "《中国材料工程大典 第8卷 无机非金属材料工程（上）》", 31 March 2006, article "Ni-Zn铁氧体的工艺特点", pages: 433 * |
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| CN106542815A (en) * | 2015-09-21 | 2017-03-29 | 西酉电子科技（上海）有限公司 | A kind of method for making ferrite adhesive-free area |
| CN106542815B (en) * | 2015-09-21 | 2020-09-25 | 平湖市子元电子科技有限公司 | Method for manufacturing ferrite glue-free area |
| CN106486238A (en) * | 2016-09-13 | 2017-03-08 | 深圳振华富电子有限公司 | A kind of Stacked magnetic bead and preparation method thereof |
| CN106653275A (en) * | 2016-09-13 | 2017-05-10 | 深圳振华富电子有限公司 | Laminated chip magnetic bead and preparation method thereof |
| CN106653275B (en) * | 2016-09-13 | 2019-02-01 | 深圳振华富电子有限公司 | Stacked magnetic bead and preparation method thereof |
| CN109910163A (en) * | 2017-12-13 | 2019-06-21 | 昊佰电子科技（上海）有限公司 | A kind of ferrite bound edge part manufacture craft |
| CN111489890A (en) * | 2019-01-28 | 2020-08-04 | 深圳市麦捷微电子科技股份有限公司 | Manufacturing method of patch power inductor |
| CN111446076A (en) * | 2020-05-19 | 2020-07-24 | 惠州市宏业兴电子有限公司 | Method for producing laminated magnetic beads |
| CN111446076B (en) * | 2020-05-19 | 2021-10-15 | 惠州市宏业兴电子有限公司 | Method for producing laminated magnetic beads |
| CN113658789A (en) * | 2021-08-18 | 2021-11-16 | 广东风华邦科电子有限公司 | Preparation method for improving current resistance of sheet type multilayer thick silver magnetic bead |
| CN113658789B (en) * | 2021-08-18 | 2024-03-29 | 广东风华邦科电子有限公司 | Preparation method for improving current resistance of sheet type multi-layer thick silver magnetic beads |
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