CN207542045U - A kind of aluminium oxide inductance porcelain core - Google Patents
A kind of aluminium oxide inductance porcelain core Download PDFInfo
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- CN207542045U CN207542045U CN201721490630.7U CN201721490630U CN207542045U CN 207542045 U CN207542045 U CN 207542045U CN 201721490630 U CN201721490630 U CN 201721490630U CN 207542045 U CN207542045 U CN 207542045U
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- core
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- porcelain
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Abstract
The utility model discloses a kind of aluminium oxide inductance porcelain cores, inductance porcelain core is included using matrix made of aluminium oxide ceramics, matrix includes the first core, second core and the third core of the first core of connection and the second core, the upper end of first core is equipped with first electrode, the upper end of second core is equipped with second electrode, first electrode and second electrode are located at the same side of third core, the top of first electrode and second electrode is higher than the top of third core, the cross section of first electrode and second electrode is identical quadrangle, length in quadrangle close to one side of third core is less than the length of its opposite side.The inductance porcelain core of the utility model uses the ceramics for containing aluminium oxide to be made as base material, can reduce material wastage rate, stability of the enhancing inductance porcelain core in high-frequency circuit；The electrode of inductance porcelain core is using interior shallow outer depth, the inclined structure of gradual change, it can be ensured that tin height higher is climbed in outside, can improve Product jointing intensity, reduces short-circuit risks.
Description
Technical field
The utility model is related to coiling chip inductive technologies field, especially a kind of aluminium oxide inductance porcelain core.
Background technology
Existing inductance porcelain core is coiling chip using ferrite as base；The structure of inductance porcelain core is relatively easy, for example,
In patent CN201536045U, porcelain core surface is disclosed equipped with rounded corner；In patent CN203982971U, inductance porcelain is disclosed
The length-width ratio of core.Above-mentioned inductance porcelain core can there are problems that during application, for example, (1) inductance porcelain core top electrode two
Side is equal height, causes product easily short-circuit, winding space is limited；(2) using ferrite as base material, spillage of material height (i.e. Q
It is worth low), sensibility reciprocal stability is poor in high-frequency circuit；(3) connection mode of connection core and both sides porcelain core is direct contact type,
Cause winding inter-turn bad.
Utility model content
Based on this, the purpose of the utility model is to overcome provide a kind of energy in place of above-mentioned the deficiencies in the prior art to reduce
The aluminium oxide inductance porcelain core of short-circuit risks.
To achieve the above object, the technical solution that the utility model is taken is：A kind of aluminium oxide inductance porcelain core, the inductance
Porcelain core is included using matrix made of aluminium oxide ceramics, and described matrix includes the first core, the second core and connection described the
The third core of one core and second core, the upper end of first core are equipped with first electrode, second core
Upper end is equipped with second electrode, and the first electrode and the second electrode are located at the same side of the third core, and described first
The top of electrode and second electrode is higher than the top of the third core, and the cross section of the first electrode and second electrode is phase
With quadrangle, the length in the quadrangle close to one side of the third core is less than the length of its opposite side.As a result, first
Electrode and second electrode inner side and outer side (i.e. opposite side) height are different, using the inclined mode of gradual change, the control of medial electrode height
In 0.01~0.3mm, lateral electrode height (i.e. opposite side) is controlled in 0.05~0.8mm, it can be ensured that and tin height higher is climbed in outside,
It is appropriate that tin height is climbed in inside, can improve weld strength, while provides more spaces for coiling, can prevent short circuit phenomenon
Occur；It should be noted that cross section refers to the section of first electrode and second electrode short-axis direction herein.
As advanced optimizing for said program, the surface of the first electrode and second electrode is coated with three-layer metal
Layer, the three-layer metal layer are the first metal layer, second metal layer and third metal layer successively from inside to outside, first metal
Layer is silver palladium alloy, molybdenum manganese alloy or tungsten, and the second metal layer is nickel, and the third metal layer is tin or gold.It should illustrate
, the first metal layer combined by way of sintering with aluminium oxide ceramics base material；Second metal layer and third metal layer use
Electric plating method is formed, and has excellent welding performance and higher bond strength.
As advanced optimizing for said program, the third core is connect by the first terrace with edge with first core,
The third core is connect by the second terrace with edge with second core.It, can as a result, using the first terrace with edge and the second terrace with edge transition
It is excessively sharp keen to avoid the edge of inductance porcelain core, it can also avoid the problem that winding inter-turn is bad.
As advanced optimizing for said program, the surface of the third core is concave curved surface.Thus, it is possible to reduce inductance
Porcelain core increased volume due to coiling；Meanwhile third core surface does not have corner angle, will not damage coil.
As advanced optimizing for said program, the third metal layer coats the first electrode and the second electricity completely
Pole.Thus, it is possible to prevent first electrode and second electrode from being aoxidized, it is ensured that first electrode and second electrode have solderability.
As advanced optimizing for said program, the section of the inductance porcelain core includes rectangle, U-shaped or/and H-shaped.It is preferred that
Ground, the cross section of inductance porcelain core is rectangle, and longitudinal section is U-shaped or H-shaped；It should be noted that longitudinal section herein refers to inductance
The section of the long axis direction of porcelain core, cross section refer to the section of the short-axis direction of inductance porcelain core；Preferably, inductance porcelain core is in left and right
It is symmetrical or/and front and rear symmetrical.
As advanced optimizing for said program, the longitudinal section of the inductance porcelain core includes 2 U-shaped sections；It is alternatively, described
The longitudinal section of inductance porcelain core includes 2 H-shaped sections.
As advanced optimizing for said program, the longitudinal section of the inductance porcelain core includes 2 H-shaped sections and 2 U-shapeds are cut
Face.It should be noted that 2 H-shaped sections and 2 U-shaped sections are 4 longitudinal sections, 4 longitudinal sections correspond to the forward sight of inductance porcelain core
Figure, rearview, bottom view and vertical view.
As advanced optimizing for said program, the longitudinal section of the inductance porcelain core is all H-shaped section.
As advanced optimizing for said program, the length on one side in the quadrangle close to the third core is
0.01~0.3mm, the length in the quadrangle close to the opposite side on one side of the third core are 0.05~0.8mm.
In conclusion the beneficial effects of the utility model are：
The inductance porcelain core of the utility model uses the ceramics for containing aluminium oxide to be made as base material, can reduce spillage of material
Rate, stability of the enhancing inductance porcelain core in high-frequency circuit；The electrode of inductance porcelain core is using interior shallow outer depth, the inclined knot of gradual change
Structure, it can be ensured that tin height higher is climbed in outside, can improve Product jointing intensity, reduces short-circuit risks.
Description of the drawings
Fig. 1 is a kind of dimensional structure diagram of the utility model aluminium oxide inductance porcelain core；
Fig. 2 is a kind of sectional view of aluminium oxide inductance porcelain core of the utility model；
Fig. 3 is the structure diagram of the metal layer of the utility model；
Fig. 4 is a kind of second of dimensional structure diagram of aluminium oxide inductance porcelain core of the utility model；
Fig. 5 is a kind of the third dimensional structure diagram of aluminium oxide inductance porcelain core of the utility model；
Fig. 6 is a kind of the 4th kind of dimensional structure diagram of aluminium oxide inductance porcelain core of the utility model；
Wherein, the 1, first core, the 2, second core, 3, third core, 4, first electrode, 5, second electrode, the 6, first side,
7th, opposite side, 8, the first metal layer, 9, second metal layer, 10, third metal layer, 11, matrix, 12, on the inside of electrode, 13, outside electrode
Side, the 14, first terrace with edge, the 15, second terrace with edge.
Specific embodiment
To better illustrate the purpose of this utility model, technical solution and advantage, below in conjunction with attached drawing and specific implementation
The utility model is described in further detail for example.
Embodiment 1
A kind of embodiment of the aluminium oxide inductance porcelain core of the utility model, as shown in Figures 1 to 3, including using aluminium oxide
Matrix 11 made of ceramics, matrix 11 include the first core 1, the second core 2 and the first core 1 of connection and second core 2
Third core 3, the upper end of the first core 1 are equipped with first electrode 4, and the upper end of the second core 2 is equipped with second electrode 5, first electrode 4
It is located at the same side of third core 3 with second electrode 5, the top of first electrode 4 and second electrode 5 is higher than the top of third core 3
The cross section of portion, first electrode 4 and second electrode 5 is identical quadrangle, close to the first side 6 of third core 3 in quadrangle
Length be less than its opposite side 7 length.The surface of third core 3 can be plane, can also use concave curved surface.
As shown in figure 3, the surface of first electrode 4 and second electrode 5 is coated with three-layer metal layer, three-layer metal layer is by interior
It is the first metal layer 8, second metal layer 9 and third metal layer 10 successively outward, the first metal layer 8 is silver palladium alloy, molybdenum manganese closes
Gold or tungsten, second metal layer 9 are nickel, and third metal layer 10 is tin or gold.The cladding first electrode 4 and the completely of third metal layer 10
Two electrodes 5.
The longitudinal section of inductance porcelain core includes 2 U-shaped sections, as shown in Figure 4；Or the longitudinal section of inductance porcelain core includes 2 H
Tee section, as shown in Figure 1；Or the longitudinal section of inductance porcelain core includes 3 H-shaped sections, as shown in Figure 5.
Embodiment 2
Another embodiment of the aluminium oxide inductance porcelain core of the utility model, with differing only in for embodiment 1：Third core
Body 3 is connect by the first terrace with edge 14 with the first core 1, and third core 3 is connect by the second terrace with edge 15 with the second core 2；And
The longitudinal section of inductance porcelain core includes 4 H-shaped sections, as shown in Figure 6；Between first core, the second core and third core respectively
It is connected using the first terrace with edge and the second terrace with edge transition, can be excessively sharp keen to avoid the edge of inductance porcelain core, winding can also be avoided
The problem of turn-to-turn is bad.
The inductance porcelain core of the utility model has the characteristics that following several respects：
(1) the coiling chip inductance porcelain core has inductance value range wide (mH-H), and inductance precision is high, and small (i.e. Q values are lost
Greatly), the features such as allowable current is big, manufacture craft inheritance is strong, especially suitable for high-frequency circuit；The high q-factor that has, Gao Zixie
Vibration frequency is the incomparable characteristic of other inductance；
(2) inductance porcelain core structure includes U-shaped (Fig. 4), H1 types (Fig. 1), H2 types (Fig. 5), H3 types (Fig. 6), can meet difference
Coiling demand；
(3) the connection core among inductance porcelain core (i.e. third core) can be used curved design, reduce inductance porcelain core because around
It makes and increased volume；
(4) height of connection core is slightly below the height of first and second core, and position mode is aligned for bottom, placed in the middle right
One kind in neat；The width for connecting core is equal to or less than the width of first and second core；
(5) connection core and the first core, the connection mode of the second core are one in direct contact type, terrace with edge transition type
Kind；During using direct contact type, simple production process, cost is relatively low；Using terrace with edge transition type, clear-cut margin problem, energy are avoided
Improve the problem of winding inter-turn is bad.
For aluminium oxide ceramics, ceramic segment alumina content is not less than the base material that the inductance porcelain core of the utility model uses
96%, bulk density is not less than 3.7g/cm3.The utility model uses aluminium oxide ceramics as base material, due to ceramic alumina aluminium
Material has good heat, electrical stability, its inductance value in high-frequency circuit is made to keep stablizing；Meanwhile dielectric loss angle tangent
It is worth low, makes it that can keep high q-factor in circuit, reduce loss.
The first and second electrode surface layer coating metal layer of the right and left of inductance porcelain core, using the inclined mode of gradual change,
As shown in Fig. 2, 12 deep-controlled in 0.01~0.3mm on the inside of electrode, 13 is deep-controlled in 0.05~0.8mm on the outside of electrode, so
Carry out plating Ni, plating Sn or Au again afterwards；Using angled manner shallow in outer depth, both may insure to climb tin height, inside on the outside of electrode
It is appropriate to climb tin height, for improving weld strength, while provides more spaces for coiling, prevents short circuit phenomenon.
Finally, it should be noted that above example is only to illustrate the technical solution of the utility model rather than to this reality
With the limitation of novel protected range, although being explained in detail with reference to preferred embodiment to the utility model, this field it is common
It will be appreciated by the skilled person that the technical solution of the utility model can be modified or replaced equivalently, without departing from this reality
With the spirit and scope of new technique scheme.
Claims (10)
1. a kind of aluminium oxide inductance porcelain core, which is characterized in that the inductance porcelain core is included using matrix made of aluminium oxide ceramics,
Described matrix includes the first core, the second core and the third core for connecting first core and second core, institute
The upper end for stating the first core is equipped with first electrode, and the upper end of second core is equipped with second electrode, the first electrode and institute
State the same side that second electrode is located at the third core, the top of the first electrode and second electrode is higher than the third core
The cross section of the top of body, the first electrode and second electrode is identical quadrangle, close to described the in the quadrangle
The length on one side of three cores is less than the length of its opposite side.
2. inductance porcelain core according to claim 1, which is characterized in that the surface Jun Bao of the first electrode and second electrode
It is covered with three-layer metal layer, the three-layer metal layer is the first metal layer, second metal layer and third metal layer successively from inside to outside,
The first metal layer is silver palladium alloy, molybdenum manganese alloy or tungsten, and the second metal layer is nickel, the third metal layer for tin or
Gold.
3. inductance porcelain core according to claim 1, which is characterized in that the third core passes through the first terrace with edge and described the
One core connects, and the third core is connect by the second terrace with edge with second core.
4. inductance porcelain core according to claim 1, which is characterized in that the surface of the third core is concave curved surface.
5. inductance porcelain core according to claim 2, which is characterized in that the third metal layer coats first electricity completely
Pole and second electrode.
6. inductance porcelain core according to claim 1, which is characterized in that the section of the inductance porcelain core includes rectangle, U-shaped
Or/and H-shaped.
7. inductance porcelain core according to claim 6, which is characterized in that the longitudinal section of the inductance porcelain core includes 2 U-shapeds and cuts
Face.
8. inductance porcelain core according to claim 6, which is characterized in that the longitudinal section of the inductance porcelain core includes 2 H-shaped and cuts
Face and 2 U-shaped sections.
9. inductance porcelain core according to claim 6, which is characterized in that the longitudinal section of the inductance porcelain core is all H-shaped section.
10. inductance porcelain core according to claim 1, which is characterized in that close to the third core in the quadrangle
The length on one side is 0.01~0.3mm, and the length in the quadrangle close to the opposite side on one side of the third core is 0.05
~0.8mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721490630.7U CN207542045U (en) | 2017-11-09 | 2017-11-09 | A kind of aluminium oxide inductance porcelain core |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721490630.7U CN207542045U (en) | 2017-11-09 | 2017-11-09 | A kind of aluminium oxide inductance porcelain core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110885235A (en) * | 2019-11-26 | 2020-03-17 | 深圳市岑科实业有限公司 | Ceramic core material applied to high-frequency inductor framework and preparation method thereof |
-
2017
- 2017-11-09 CN CN201721490630.7U patent/CN207542045U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110885235A (en) * | 2019-11-26 | 2020-03-17 | 深圳市岑科实业有限公司 | Ceramic core material applied to high-frequency inductor framework and preparation method thereof |
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