CN205692698U - A kind of multilayer ceramic capacitor of low ESL - Google Patents
A kind of multilayer ceramic capacitor of low ESL Download PDFInfo
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- CN205692698U CN205692698U CN201620556048.5U CN201620556048U CN205692698U CN 205692698 U CN205692698 U CN 205692698U CN 201620556048 U CN201620556048 U CN 201620556048U CN 205692698 U CN205692698 U CN 205692698U
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Abstract
A kind of multilayer ceramic capacitor of low ESL, including ceramic core, two lead-in wires being conductively connected on ceramic core, the insulation crust of parcel ceramic core, lead-in wire is " L " the shape structure being made up of the conductive plate being mutually connected vertically and welded plate, conductive plate is conductively connected with ceramic core and is covered by insulation crust, welded plate is positioned at the bottom of insulation crust and has the welding section extending laterally insulation crust, use the lead-in wire of " L " shape, not only substantially reduce wire length, and decrease the bending angle of lead-in wire, thus can be substantially reduced ESL, improve the self-resonant frequency of electric capacity, electric capacity is made to can be applicable in high-frequency circuit.
Description
Technical field
This utility model relates to a kind of multilayer ceramic capacitor.
Background technology
As depicted in figs. 1 and 2, multilayer ceramic capacitor, mainly include ceramic core 1, two lead-in wire 2 and insulation crust 3, pottery
Porcelain core body 1 includes electrode slice in parallel interval and staggered some first, second, be arranged on first, second in electrode slice
Between electrolyte and each first in the first external electrode sheet that is conductively connected of electrode slice be conductively connected with each the second inner electrode sheet
The second external electrode sheet, usual ceramic core 1 is cuboid, and it is two relative that first, second dispatch from foreign news agency pole piece is arranged in ceramic core 1
Face, two lead-in wires 2 are conductively connected with first, second dispatch from foreign news agency pole piece respectively, and insulation crust 3 then wraps up ceramic core, insulation crust 3
Substantially suitable with ceramic core 1 shape cuboid.
As depicted in figs. 1 and 2, the multi-layer ceramic capacitance of E shell encapsulating structure, the lead-in wire 2 of this electric capacity is from the end of ceramic core 1
Face extends to side, and stretches out from side, then bending forms pad to bottom, causes the increase of wire length；The standard of E shell
Package dimension is 7.3mm × 4.3mm × 4.1mm, and the length of lead-in wire 2 is about 2.8mm.In theory for lead-in wire, 1mm length
About producing the inductance value of 1nH, therefore inductance about increases 2.8nH.On the other hand, there is the bending of 90 °, many places, at high frequency in lead-in wire 2
Under rate, big current condition, the exit of bending can increase eddy current, and directly increases the equivalent inductance (ESL) of capacitor.ESL's
Increase the decline directly resulting in capacitor self-resonant frequency, make capacitor cannot be applied in high-frequency circuit.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, it is provided that a kind of simple in construction, be easy to welding and low ESL
Multilayer ceramic capacitor.
The purpose of this utility model realizes by following technical solution:
A kind of multilayer ceramic capacitor of low ESL, two lead-in wires including ceramic core, being conductively connected on ceramic core,
The insulation crust of parcel ceramic core, it is characterised in that: go between as being made up of the conductive plate being mutually connected vertically and welded plate
" L " shape structure, conductive plate is conductively connected with ceramic core and is covered by insulation crust, and welded plate is positioned at the bottom of insulation crust also
And there is the welding section extending laterally insulation crust.
Further, the bottom surface of described welded plate and the bottom surface of insulation crust are equal.
Further, the front end edge of described welding section is formed with concaveconvex structure.
Further, described ceramic core is cuboid, the length that described insulation crust is substantially suitable with ceramic core
Cube.
Further, described in two, the conductive plate of lead-in wire is attached on two opposite faces of described ceramic core respectively, described pottery
Two opposite faces of porcelain core body are respectively arranged with the dispatch from foreign news agency pole piece being conductively connected with described conductive plate.
Further, described conductive plate is suitable with the size of two opposite faces of described ceramic core.
Further, described conductive plate and welded plate are one-body molded.
Further, described conductive plate and welded plate are rectangle.
A kind of multilayer ceramic capacitor of low ESL, two lead-in wires including ceramic core, being conductively connected on ceramic core,
The insulation crust of parcel ceramic core, it is characterised in that: lead-in wire includes that the conductive plate vertically extended, connection conductive plate level are prolonged
The horizontal welding fishplate bar stretched and connect horizontal welding fishplate bar the vertical welded plate that vertically extends, conductive plate is conductively connected with ceramic core
And covered by insulation crust, horizontal welding fishplate bar is positioned at the bottom of insulation crust, and vertical welded plate is positioned at the side of insulation crust, and
At least bottom surface of horizontal welding fishplate bar and the lateral surface of vertical welded plate is exposed to outside insulation crust.
Further, described vertical welded plate is formed the fill solder hole near horizontal welding fishplate bar, is used for increasing weldering
The loading of material, improves weld strength.
This utility model has the advantages that
Compared with prior art, embodiment one uses lead-in wire and the conductive plate of embodiment two employing, the level welding of " L " shape
Plate and the structure of vertical welded plate, not only substantially reduce wire length, and decrease the bending angle of lead-in wire, the most permissible
It is substantially reduced ESL, improves the self-resonant frequency of electric capacity, make electric capacity can be applicable in high-frequency circuit；And the welded plate of embodiment one
Welding section extend laterally insulation crust, and the vertical welded plate of embodiment two, not only make capacitor be applicable to reflux welder
Skill, and it is applicable to manual welding, and welding quality can be observed easily；The front end edge of welding section forms concaveconvex structure and enforcement
The fill solder hole of example two, can increase the contact area of solder and welding section, increases adhesion amount and the adhesive strength of solder.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings this utility model is described in further detail.
Fig. 1 is the axonometric chart of existing ceramic capacitor.
Fig. 2 is the component decomposition map of existing ceramic capacitor.
Fig. 3 is the axonometric chart of embodiment one ceramic core and lead-in wire.
Fig. 4 is the axonometric chart of embodiment one.
Fig. 5 is the axonometric chart of embodiment two.
Fig. 6 is the axonometric chart of embodiment two ceramic core and lead-in wire.
Detailed description of the invention
Embodiment one, with reference to shown in Fig. 3 and Fig. 4, the multilayer ceramic capacitor of a kind of low ESL, including ceramic core 5, two
Lead-in wire 6 and insulation crust 7.
Ceramic core 5 is cuboid, is mainly made up of electrolyte, interior electrode slice and dispatch from foreign news agency pole piece, and two dispatch from foreign news agency pole pieces are arranged
At two opposite faces of ceramic core 5, for known prior art, the most no longer describe in detail.
" L " shape structure that lead-in wire 6 is formed in one, conductive plate 61 and welded plate 62 by being mutually connected vertically form, and lead
Electroplax 61 and welded plate 62 are substantially rectangular, and conductive plate 61 has the protuberance 611 being connected with welded plate 62.
The conductive plate 61 of two lead-in wires 6 is attached to respectively on two opposite faces of ceramic core 5 and is conductively connected with dispatch from foreign news agency pole piece,
The welded plate 62 of lead-in wire 6 is positioned at the bottom of insulation crust 7 and has the welding section 62a extended laterally from insulation crust 7, welding
The bottom surface of plate 62 is equal with the bottom surface of insulation crust 7, and is exposed to outside insulation crust 7, and the front end edge of welding section 62a is formed
Concaveconvex structure 621, i.e. insulation crust 7 wrap up ceramic core 5, conductive plate 61 and the local top surface of welded plate 62 and side, insulation
The cuboid that shell 7 is substantially suitable with ceramic core 5.
Embodiment two, its basic structure is identical with embodiment one, differs primarily in that the structure of lead-in wire 8, and this lead-in wire 8 includes
The conductive plate 81 that vertically extends, connect conductive plate 81 horizontal-extending horizontal welding fishplate bar 82 and connect horizontal welding fishplate bar 82 and erect
The straight vertical welded plate 83 extended, conductive plate 81 is conductively connected with ceramic core 5 and is covered by insulation crust 7, horizontal welding fishplate bar
82 bottoms being positioned at insulation crust 7, vertical welded plate 83 is positioned at the side of insulation crust 7, and the end of at least horizontal welding fishplate bar 82
The lateral surface of face and vertical welded plate 83 is exposed to outside insulation crust 7, vertical welded plate 83 is formed and welds near level
Three fill solder holes 831 of plate 82, fill solder hole 831 arranges along the width of vertical welded plate 83.
The above, preferred embodiment the most of the present utility model, therefore this utility model can not be limited with this and implement
Scope, the equivalence change i.e. made according to this utility model claim and description with modify, all should still belong to this
In the range of utility model patent is contained.
Claims (10)
1. a multilayer ceramic capacitor of low ESL, two lead-in wires including ceramic core, being conductively connected on ceramic core, bag
Wrap up in the insulation crust of ceramic core, it is characterised in that: go between as " L " being made up of the conductive plate being mutually connected vertically and welded plate
Shape structure, conductive plate is conductively connected with ceramic core and is covered by insulation crust, welded plate be positioned at insulation crust bottom and
There is the welding section extending laterally insulation crust.
The multilayer ceramic capacitor of a kind of low ESL the most according to claim 1, it is characterised in that: the end of described welded plate
Face is equal with the bottom surface of insulation crust.
The multilayer ceramic capacitor of a kind of low ESL the most according to claim 1, it is characterised in that: before described welding section
End is along being formed with concaveconvex structure.
4. according to the multilayer ceramic capacitor of a kind of low ESL described in claim 1 or 2 or 3, it is characterised in that: described pottery
Core body is cuboid, the cuboid that described insulation crust is substantially suitable with ceramic core.
The multilayer ceramic capacitor of a kind of low ESL the most according to claim 4, it is characterised in that: described in two, lead-in wire leads
Electroplax is attached on two opposite faces of described ceramic core respectively, and two opposite faces of described ceramic core are respectively arranged with described
The dispatch from foreign news agency pole piece that conductive plate is conductively connected.
The multilayer ceramic capacitor of a kind of low ESL the most according to claim 5, it is characterised in that: described conductive plate and institute
The size of two opposite faces stating ceramic core is suitable.
7. according to the multilayer ceramic capacitor of a kind of low ESL described in claim 1 or 2 or 3, it is characterised in that: described conduction
Plate and welded plate are one-body molded.
8. according to the multilayer ceramic capacitor of a kind of low ESL described in claim 1 or 2 or 3, it is characterised in that: described conduction
Plate and welded plate are rectangle.
9. a multilayer ceramic capacitor of low ESL, two lead-in wires including ceramic core, being conductively connected on ceramic core, bag
Wrap up in the insulation crust of ceramic core, it is characterised in that: conductive plate that lead-in wire includes vertically extending, connect conductive plate horizontal-extending
Horizontal welding fishplate bar and connect horizontal welding fishplate bar the vertical welded plate that vertically extends, conductive plate and ceramic core and be conductively connected also
Being covered by insulation crust, horizontal welding fishplate bar is positioned at the bottom of insulation crust, and vertical welded plate is positioned at the side of insulation crust, and extremely
Few bottom surface of horizontal welding fishplate bar and the lateral surface of vertical welded plate are exposed to outside insulation crust.
The multilayer ceramic capacitor of a kind of low ESL the most according to claim 9, it is characterised in that: described vertical welded plate
On be formed with the fill solder hole near horizontal welding fishplate bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620556048.5U CN205692698U (en) | 2016-06-08 | 2016-06-08 | A kind of multilayer ceramic capacitor of low ESL |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620556048.5U CN205692698U (en) | 2016-06-08 | 2016-06-08 | A kind of multilayer ceramic capacitor of low ESL |
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| Publication Number | Publication Date |
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| CN205692698U true CN205692698U (en) | 2016-11-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914036A (en) * | 2016-06-08 | 2016-08-31 | 福建火炬电子科技股份有限公司 | Multilayer ceramic capacitor of low ESL |
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2016
- 2016-06-08 CN CN201620556048.5U patent/CN205692698U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914036A (en) * | 2016-06-08 | 2016-08-31 | 福建火炬电子科技股份有限公司 | Multilayer ceramic capacitor of low ESL |
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