CN103035390A - Inductance magnetic bead - Google Patents
Inductance magnetic bead Download PDFInfo
- Publication number
- CN103035390A CN103035390A CN2012105662061A CN201210566206A CN103035390A CN 103035390 A CN103035390 A CN 103035390A CN 2012105662061 A CN2012105662061 A CN 2012105662061A CN 201210566206 A CN201210566206 A CN 201210566206A CN 103035390 A CN103035390 A CN 103035390A
- Authority
- CN
- China
- Prior art keywords
- electrode
- hole
- magnetic bead
- inductance magnetic
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
The invention discloses an inductance magnetic bead, which aims at overcoming insufficient high-frequency performance of the inductance magnetic bead and obtaining a higher nominal resistance value. The inductance magnetic bead is characterized in that two ends of a lower substrate, a middle substrate, an upper substrate, a first coil layer and a second coil layer are both provided with a first end electrode and a second end electrode, the first coil layer is provided with a first electrode, the second coil layer is provided with a second electrode and a third electrode which are oppositely arranged, one end of the second electrode is connected with the first end electrode, one end of the third electrode is connected with the second end electrode, two ends of the first electrode, one end of the second electrode, one end of the third electrode and the middle substrate are respectively provided with one through hole, the through holes are arranged in opposite positions, and the first electrode, the second electrode and the third electrode are connected through the through holes which are mutually communicated. Compared with the prior art, a magnetic flow effective surface of an electrified coil is positioned on a diagonal surface of a product, a magnetic field direction is vertical to the diagonal surface of the product, thus the higher resistance value can be obtained, and the defect of insufficient high-frequency impedance performance of an existing magnetic bead can be overcome.
Description
Technical field
The present invention relates to a kind of electronic component, particularly the inductance magnetic bead of a kind of Effective Raise resistance and high frequency performance.
Background technology
At present, common magnetic bead is made of the helical coil of the vertical pcb board of flow direction, and its advantage is that the number of turns of coiling is large, and turn-to-turn is apart from little, can obtain very large resistance (can up to 2000 Ω).Owing to be separated by between coil and coil nearly (about 30um), the stray capacitance C of generation higher (reaching 1pF) affects self-resonance frequence less (about 500MHz), and the high-frequency resistance performance is not enough.
Summary of the invention
The purpose of this invention is to provide a kind of inductance magnetic bead, the technical problem that solve is the impact that overcomes the high frequency performance deficiency of inductance magnetic bead, and obtains higher nominal resistance.
For addressing the above problem, the present invention realizes by the following technical solutions: a kind of inductance magnetic bead, described inductance magnetic bead comprises the infrabasal plate that one deck is above, middle substrate and upper substrate, at infrabasal plate and middle substrate, be respectively equipped with the First Line ring layer between middle substrate and the upper substrate, the second coil layer, at infrabasal plate, middle substrate, upper substrate, the two ends of First Line ring layer and the second coil layer are equipped with the first end electrode, the second termination electrode, be provided with the first electrode of one or more in the diagonal of described First Line ring layer, be provided with along its length the second electrode that is oppositely arranged on described the second coil layer, third electrode, one end of the second electrode is connected with the first end electrode, one end of third electrode is connected with the second termination electrode, two ends at described the first electrode, the termination of the second electrode, be respectively equipped with the corresponding through hole in position, described the first electrode on the termination of third electrode and the middle substrate, connect by the through hole that mutually connects between the second electrode and the third electrode.
The second electrode of the present invention and third electrode be arranged in parallel.
The second electrode of the present invention and third electrode are arranged on the same straight line, the both sides of the second coil layer.
Also be provided with the 4th electrode and the 5th electrode between the second electrode of the present invention and the third electrode, the through hole by mutual perforation interconnects with the first electrode respectively on the two ends of the 4th electrode and the 5th electrode and on the correspondence position of middle substrate.
The first electrode of the present invention is three.
The 4th electrode of the present invention and the 5th electrode incline are arranged on the second coil layer, and are parallel to each other.
Infrabasal plate of the present invention, middle substrate and upper substrate all adopt magnetic material.
Infrabasal plate of the present invention, middle substrate and upper substrate all adopt ferrite magnetic material.
Middle substrate of the present invention adopts nickel-copper-zinc ferrite magnetic material, nickel-copper ferrite magnetic material or high-frequency ceramic.
The thickness of the first electrode of the present invention, the second electrode, third electrode, the 4th electrode and the 5th electrode is 10um to 150um; The aperture of through hole is 60um to 350um.
The present invention compared with prior art, adopt two-layer loop construction, the first electrode of one or more is set at the diagonal of First Line ring layer, be oppositely arranged the second electrode and third electrode parallel or in a straight line on the second coil layer, connect by corresponding through hole each other, be combined into helical coil, the magnetic flux significant surface of hot-wire coil is positioned on the diagonal plane of product, magnetic direction is perpendicular to the diagonal plane of product, obtain higher nominal resistance, the spacing of two coil layer very large (more than the 500um), the stray capacitance that forms between the powered electrode is minimum, has overcome the defective of existing magnetic bead high-frequency resistance performance deficiency.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
Fig. 2 is the structural representation of the embodiment of the invention 2.
Fig. 3 is the structural representation of the embodiment of the invention 3.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
As shown in Figure 1, inductance magnetic bead of the present invention comprises and is disposed with infrabasal plate 1 from top to bottom, middle substrate 2 and upper substrate 3, infrabasal plate 1, middle substrate 2 all adopts identical magnetic material with upper substrate 3, and all comprise one or more layers, between infrabasal plate 1 and middle substrate 2, be provided with First Line ring layer 4, be provided with the second coil layer 5 between middle substrate 2 and the upper substrate 3, at infrabasal plate 1, First Line ring layer 4, middle substrate 2, the two ends, the left and right sides of the second coil layer 5 and upper substrate 3 are respectively equipped with first end electrode 6 and the second termination electrode 7, on First Line ring layer 4, be provided with the first electrode 8 of one or more along a side diagonal of First Line ring layer 4, be respectively equipped with the first through hole 9 and the second through hole 10 on the two ends of this first electrode 8, length direction along the second coil layer 5 on the second coil layer 5 is provided with the second electrode 13 and the third electrode 14 that is oppositely arranged, this second electrode 13 and third electrode 14 be arranged in parallel, the afterbody of the second electrode 13 connects first end electrode 6, the afterbody of third electrode 14 connects the second termination electrode 7, on middle substrate 2, with the first through hole 9, the correspondence position of the second through hole 10 is provided with third through-hole 11, fourth hole 12, the first electrode 8, the first through hole 9 by mutually connecting between the second electrode 13 and the third electrode 14, third through-hole 11, the second through holes 10, fourth hole 12 interconnects.
The electric current input of described product flows into the second electrode 13 by first end electrode 6, be connected to the first electrode 8 through fourth hole 12, the second through hole 10, connect third electrode 14 through the first through hole 9, third through-hole 11 again, the second termination electrode 7 outputs that electric current connects from third electrode 14.
As shown in Figure 2, the difference with embodiment 1 of present embodiment 2 is, in the middle basic unit 2 one or more layers adopts magnetic permeability to be different from the magnetic material of upper substrate 1 and upper substrate 2, for example: nickel-copper-zinc ferrite (magnetic permeability 300-1000) is as high-permeability material, and nickel-copper ferrite (magnetic permeability 2-5) or high-frequency ceramic material (magnetic permeability is 1) are as low magnetic permeability material.Adopt more the magnetic material of high permeability can make product self-resonance frequence f reach, the resistance peak value improves; Adopting more, the magnetic material of low magnetic permeability can be to move the resistance peak reduction behind the product self-resonance frequence f.
As shown in Figure 3, present embodiment 3 is with the difference of embodiment 1, the first electrode 8 has three, side diagonal along First Line ring layer 4 be arranged in parallel, in order better to distinguish these three the first electrodes 8, adopt 8A at this, 8B and 8C represent respectively three the first electrodes, the first electrode that is arranged on the diagonal adopts label 8A to represent, the electrode that is set in parallel in the first electrode 8A both sides adopts the first electrode 8B and the first electrode 8C to represent, the length that is shorter in length than the first electrode 8A of the first electrode 8B and the first electrode 8C, through hole in the first electrode 8A two ends then represents with the first through hole 9A and the second through hole 10A, two ends at the first electrode 8B and the first electrode 8C also is respectively equipped with the first through hole 9B, the first through hole 9C, the second through hole 10B and the second through hole 10C, position corresponding with the first through hole and the second through hole on middle substrate 2 is respectively equipped with third through-hole 11A, 11B, 11C and fourth hole 12A, 12B, 12C, and be arranged on the second electrode 13 on the second coil layer 5 and third electrode 14 along arranging on the second coil layer 5 length directions, and be arranged on the same straight line, be positioned on the position of third through-hole 11B and fourth hole 12B, between the second electrode 13 and third electrode 14, be provided with the 4th electrode 15 and the 5th electrode 16, the 4th electrode 15 is on the connecting line between the first through hole 9A and the second through hole 10B, the 5th electrode 16 on the line between the first through hole 9C and the second through hole 10A, the second electrode 13, the first electrode 8B, the 4th electrode 15, the first electrode 8A, the 5th electrode 16, connect by the through hole that mutually connects between the first electrode 8C third electrode 14.
The electric current input of described product flows into the second electrode 13 by first end electrode 6, flow into the first electrode 8B through third through-hole 11B, the first through hole 9B, flow into the 4th electrode 15 through the second through hole 10B, fourth hole 12B again, after third through-hole 11A, the first through hole 9A flow into the first electrode 8A, by the second through hole 10A fourth hole 12A, flow into the 5th electrode 16, after flowing into the first electrode 8C by third through-hole 11C, the first through hole 9C again, flowed out by the second termination electrode 7 finally by the second through hole 10C, fourth hole 12C, third level electricity 14.
Upper substrate of the present invention, middle substrate and infrabasal plate adopt magnetic material, preferably adopt ferrite magnetic material.
Described by the thickness of change the first to the 5th electrode and the aperture of through hole, can reduce the DC characteristic resistance R dc of product, the first to the 5th thickness of electrode is 10um to 150um, the aperture of first to fourth through hole is 60um to 350um.
Described gross thickness by basic unit in changing makes the stray capacitance that forms between electrode minimum, and the self-resonance frequence f of product is improved, and middle groundwork thickness is from 50um to the product thickness near the inductance magnetic bead, and product thickness deducts upper substrate and the infrabasal plate of each about 100um.
Describedly can change the effective area S of magnetic flux by different middle basic unit gross thickness is set, adjust the nominal impedance Z of product, middle groundwork thickness is from 50um to the product thickness near the inductance magnetic bead, and product thickness deducts upper substrate and the infrabasal plate of each about 100um.
The magnetic properties of one or more layers magnetic material in the basic unit in described can also the change can play the application spectral characteristic of regulating product.
The flow direction that hot-wire coil of the present invention produces is parallel to pcb board perpendicular to the diagonal plane of product, and the magnetic flux significant surface is on diagonal plane, and greater than the area coil that any one surface forms, under the same conditions, the inductance value L of product can be higher, and nominal value Z is larger.
Claims (10)
1. inductance magnetic bead, it is characterized in that: described inductance magnetic bead comprises the infrabasal plate (1) that one deck is above, middle substrate (2) and upper substrate (3), at infrabasal plate (1) and middle substrate (2), be respectively equipped with First Line ring layer (4) between middle substrate (2) and the upper substrate (3), the second coil layer (5), in infrabasal plate (1), middle substrate (2), upper substrate (3), the two ends of First Line ring layer (4) and the second coil layer (5) are equipped with first end electrode (6), the second termination electrode (7), be provided with the first electrode (8) of one or more in the diagonal of described First Line ring layer (4), be provided with along its length the second electrode (13) that is oppositely arranged on described the second coil layer (5), third electrode (14), one end of the second electrode (13) is connected with first end electrode (6), one end of third electrode (14) is connected with the second termination electrode (7), two ends at described the first electrode (8), the termination of the second electrode (13), be respectively equipped with the corresponding through hole in position, described the first electrode (8) on the termination of third electrode (14) and the middle substrate (2), connect by the through hole that mutually connects between the second electrode (13) and the third electrode (14).
2. inductance magnetic bead according to claim 1, it is characterized in that: described the second electrode (13) and third electrode (14) be arranged in parallel.
3. inductance magnetic bead according to claim 1, it is characterized in that: described the second electrode (13) and third electrode (14) are arranged on the same straight line, the both sides of the second coil layer (5).
4. inductance magnetic bead according to claim 3, it is characterized in that: also be provided with the 4th electrode (15) and the 5th electrode (16) between described the second electrode (13) and the third electrode (14), interconnect with the first electrode (8) respectively by the through hole that mutually connects on the two ends of the 4th electrode (15) and the 5th electrode (16) and on the correspondence position of middle substrate (2).
5. inductance magnetic bead according to claim 4, it is characterized in that: described the first electrode (8) is three.
6. inductance magnetic bead according to claim 5, it is characterized in that: described the 4th electrode (15) and the 5th electrode (16) are inclined on the second coil layer (5), and are parallel to each other.
7. according to claim 2 or 6 described inductance magnetic beads, it is characterized in that: described infrabasal plate (1), middle substrate (2) and upper substrate (3) all adopt magnetic material.
8. inductance magnetic bead according to claim 7, it is characterized in that: described infrabasal plate (1), middle substrate (2) and upper substrate (3) all adopt ferrite magnetic material.
9. inductance magnetic bead according to claim 7 is characterized in that: described middle substrate (2) employing nickel-copper-zinc ferrite magnetic material, nickel-copper ferrite magnetic material or high-frequency ceramic.
10. according to claim 2 or 6 described inductance magnetic beads, it is characterized in that: the thickness of described the first electrode (8), the second electrode (13), third electrode (14), the 4th electrode (15) and the 5th electrode (16) is 10um to 150um; The aperture of through hole is 60um to 350um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105662061A CN103035390A (en) | 2012-12-24 | 2012-12-24 | Inductance magnetic bead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105662061A CN103035390A (en) | 2012-12-24 | 2012-12-24 | Inductance magnetic bead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103035390A true CN103035390A (en) | 2013-04-10 |
Family
ID=48022195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105662061A Pending CN103035390A (en) | 2012-12-24 | 2012-12-24 | Inductance magnetic bead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103035390A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58188115A (en) * | 1982-04-27 | 1983-11-02 | Sanyo Electric Co Ltd | Forming method of inductive element |
| JPH0799117A (en) * | 1993-09-28 | 1995-04-11 | Taiyo Yuden Co Ltd | Bead inductor |
| CN1175438C (en) * | 2000-12-19 | 2004-11-10 | 株式会社村田制作所 | Laminated coil parts and production thereof |
| CN1701398A (en) * | 2003-10-10 | 2005-11-23 | 株式会社村田制作所 | Multilayer coil component and its manufacturing method |
| CN101789307A (en) * | 2010-03-15 | 2010-07-28 | 深圳顺络电子股份有限公司 | Spiral coil structure of lamination chip component inner electrode |
| CN102592817A (en) * | 2012-03-14 | 2012-07-18 | 深圳顺络电子股份有限公司 | Method for manufacturing stack coil device |
-
2012
- 2012-12-24 CN CN2012105662061A patent/CN103035390A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58188115A (en) * | 1982-04-27 | 1983-11-02 | Sanyo Electric Co Ltd | Forming method of inductive element |
| JPH0799117A (en) * | 1993-09-28 | 1995-04-11 | Taiyo Yuden Co Ltd | Bead inductor |
| CN1175438C (en) * | 2000-12-19 | 2004-11-10 | 株式会社村田制作所 | Laminated coil parts and production thereof |
| CN1701398A (en) * | 2003-10-10 | 2005-11-23 | 株式会社村田制作所 | Multilayer coil component and its manufacturing method |
| CN101789307A (en) * | 2010-03-15 | 2010-07-28 | 深圳顺络电子股份有限公司 | Spiral coil structure of lamination chip component inner electrode |
| CN102592817A (en) * | 2012-03-14 | 2012-07-18 | 深圳顺络电子股份有限公司 | Method for manufacturing stack coil device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106531410B (en) | Coil, inductance element and application and preparation are in the method for the coil of inductance element | |
| CN101241795B (en) | Inductor devices | |
| CN1926649B (en) | Solid electrolytic capacitor | |
| CN104282409B (en) | Laminated-type electronic component | |
| CN207558514U (en) | Inductor components | |
| CN104517941B (en) | Coil and application and preparation are in the method for the coil of inductance element | |
| CN206389608U (en) | A kind of wiring board with coil function | |
| CN102087908A (en) | Stack type differential inductor | |
| US8093981B2 (en) | Laminated inductor with enhanced current endurance | |
| US20120056705A1 (en) | Layered inductor and manufacturing method thereof | |
| CN103093922A (en) | Common mode filter | |
| CN207691765U (en) | Phase shifter, impedance matching circuit and communication terminal | |
| JP2012164770A (en) | Coil built-in substrate and dc-dc converter module equipped with the same | |
| KR101408505B1 (en) | Common mode filter and manufacturing method thereof | |
| US8299883B2 (en) | Laminated inductive device | |
| JP2013106030A (en) | Multilayered ceramic electronic component and method of fabricating the same | |
| WO2015037374A1 (en) | Inductor and band elimination filter | |
| CN102169868B (en) | On-chip integrated inductor | |
| JP2007214448A (en) | Common mode choke coil | |
| CN103035990A (en) | Low Temperature Co-Fired Ceramic (LTCC) filter | |
| CN201311811Y (en) | Common mode filter | |
| JP2017147321A (en) | Coil component, circuit board incorporating coil component, and power supply circuit including coil component | |
| CN204836777U (en) | Multilayer high frequency blind hole PCB circuit board | |
| JP2006066769A (en) | Inductor and its manufacturing method | |
| CN103035390A (en) | Inductance magnetic bead |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130410 |