JPH0342670Y2 - - Google Patents
Info
- Publication number
- JPH0342670Y2 JPH0342670Y2 JP2125985U JP2125985U JPH0342670Y2 JP H0342670 Y2 JPH0342670 Y2 JP H0342670Y2 JP 2125985 U JP2125985 U JP 2125985U JP 2125985 U JP2125985 U JP 2125985U JP H0342670 Y2 JPH0342670 Y2 JP H0342670Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical
- layers
- capacitor
- electrodes
- electrode
- 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.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 claims description 12
- 229910052573 porcelain Inorganic materials 0.000 claims description 12
- 239000003989 dielectric material Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 description 5
- 239000003985 ceramic capacitor Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Ceramic Capacitors (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、回路基板の配線に半田付けする小型
円筒形磁器コンデンサに関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a small cylindrical porcelain capacitor that is soldered to wiring on a circuit board.
（従来の技術）
従来の小型化された例えば円筒形磁器コンデン
サは、第２図に示すように、円筒形磁器誘電体ａ
の内周面の一部からその外周面の一部に亘つて形
成された内部電極ｂと、該外周面の他部に円部電
極ｂと絶縁して形成された外部電極ｃを有し、外
周面の一部と内周面全体が絶縁被覆ｄ，d′で覆わ
れている。(Prior Art) A conventional miniaturized cylindrical porcelain capacitor, for example, has a cylindrical porcelain dielectric a
an internal electrode b formed from a part of the inner circumferential surface to a part of the outer circumferential surface, and an external electrode c formed on the other part of the outer circumferential surface insulated from the circular electrode b, A part of the outer peripheral surface and the entire inner peripheral surface are covered with insulation coatings d and d'.
（解決しようとする問題点）
上記した小型化された円筒形コンデンサは、回
路基板の配線部に半田付けするために径方向の押
圧強度が800g以上あることが要望されているの
で、磁器誘電体の厚みを薄くすることに限界があ
り、大きな静電容量が得られなかつた。例えば、
外径1.2mmφ、長さ2.0mm、厚さ0.1mmの温度補償用
円筒形コンデンサで得られる静電容量は150PFが
限界であつた。(Problem to be solved) The above-mentioned miniaturized cylindrical capacitor is required to have a radial pressing strength of 800 g or more in order to be soldered to the wiring part of a circuit board. There is a limit to how thin the capacitance can be made, making it impossible to obtain large capacitance. for example,
The maximum capacitance that can be obtained with a temperature-compensating cylindrical capacitor with an outer diameter of 1.2 mmφ, a length of 2.0 mm, and a thickness of 0.1 mm is 150 PF.
本発明は、このような問題点を解決すべくなさ
れたもので、小型で押圧強度が大きく、静電容量
の大きな円筒形磁器コンデンサを提供することを
その目的とする。 The present invention was made to solve these problems, and an object of the present invention is to provide a cylindrical ceramic capacitor that is small in size, has a large pressing strength, and has a large capacitance.
（問題点を解決するための手段）
本考案は、厚さの異なる二層の円筒形磁器誘電
体をそれぞれ挟むように三層の電極を配設し、該
三層の電極のうち外側の電極を互いに電気的に接
続したことを特徴とする。(Means for Solving the Problems) The present invention provides three layers of electrodes sandwiching two layers of cylindrical porcelain dielectric material having different thicknesses, and the outer electrode of the three layers of electrodes. are electrically connected to each other.
（作用）
この円筒形磁器コンデンサは、二層の磁器誘電
体のうち、薄い誘電体の両側に配設された電極間
で主に静電容量が取得され、厚い誘電体で主に押
圧強度を得ている。(Function) This cylindrical porcelain capacitor has two layers of porcelain dielectric, and the capacitance is mainly obtained between the electrodes arranged on both sides of the thin dielectric, and the pressing strength is mainly obtained with the thick dielectric. It has gained.
（実施例） 本考案の実施例を図面につき説明する。(Example) Embodiments of the present invention will be described with reference to the drawings.
第１図はその一実施例を示す。FIG. 1 shows one embodiment.
同図において、１は温度補償用円筒形磁器誘電
体で、その外径は1.2mm、長さは2.0mm、厚さは
0.13mmである。 In the figure, 1 is a cylindrical porcelain dielectric for temperature compensation, its outer diameter is 1.2 mm, length is 2.0 mm, and thickness is
It is 0.13mm.
この円筒形磁器誘電体１における内側の例えば
0.1mmの厚い層１ａと外側の例えば0.03mmの薄い
層１ｂはそれぞれ円筒状電極２ａと円筒状電極３
ａ及び３ｂとで挟まれており、円筒状電極２ａは
端子２に接続され、円筒状電極３ａと３ｂは端子
３を介して互いに電気的に接続されている。円筒
状電極２ａと前記厚い層１ａを介して対向する円
筒状電極３ａとで静電容量の小さなコンデンサが
構成され、円筒状電極２ａと前記薄い層１ｂを介
して対向する円筒状電極３ｂとで静電容量の大き
なコンデンサが構成され、円筒状電極３ａと３ｂ
が互いに接続されているので、全体として２つの
コンデンサが並列接続されたものとして構成され
る。 For example, the inside of this cylindrical porcelain dielectric 1
The 0.1 mm thick layer 1a and the outer thin layer 1b, for example, 0.03 mm, are a cylindrical electrode 2a and a cylindrical electrode 3, respectively.
The cylindrical electrode 2a is connected to the terminal 2, and the cylindrical electrodes 3a and 3b are electrically connected to each other via the terminal 3. The cylindrical electrode 2a and the cylindrical electrode 3a facing each other with the thick layer 1a in between constitute a capacitor with small capacitance, and the cylindrical electrode 2a and the cylindrical electrode 3b facing each other with the thin layer 1b in between constitute a capacitor. A capacitor with large capacitance is constructed, and cylindrical electrodes 3a and 3b
are connected to each other, so the overall configuration is that two capacitors are connected in parallel.
以上の磁器コンデンサは、既に知られている一
般的な製法により作成される。 The above-described ceramic capacitor is manufactured by a known general manufacturing method.
同図では、円筒形磁器誘電体１の内周全面と外
周面の一部を保護用絶縁被膜４で覆つた。 In the figure, the entire inner circumferential surface and a part of the outer circumferential surface of the cylindrical ceramic dielectric body 1 are covered with a protective insulating coating 4.
上記の寸法の円筒形磁器コンデンサの静電容量
は600PFで、径方向の押圧強度は1.2Kgであつた。 The capacitance of the cylindrical porcelain capacitor with the above dimensions was 600PF, and the radial pressing strength was 1.2Kg.
（考案の効果）
本考案は、厚さの異なる二層の円筒形磁器誘電
体をそれぞれ挟むように三層の電極を配設し、該
三層の電極のうち外側の電極を互いに電気的に接
続したので、小型で静電容量が大きいと共に押圧
強度が大きい円筒形磁器コンデンサが得られる効
果を有する。(Effects of the invention) The present invention has three layers of electrodes sandwiched between two layers of cylindrical porcelain dielectric material having different thicknesses, and the outer electrodes of the three layers are electrically connected to each other. Since the capacitors are connected, it is possible to obtain a cylindrical ceramic capacitor that is small in size, has a large capacitance, and has a large pressing strength.
第１図は本考案の一実施例の断面図、第２図は
従来例の断面図を示す。
１……円筒状磁器誘電体、１ａ……厚い層、１
ｂ……薄い層、２ａ，３ａ，３ｂ……円筒状電
極、４……絶縁被膜。
FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional example. 1... Cylindrical porcelain dielectric, 1a... Thick layer, 1
b... Thin layer, 2a, 3a, 3b... Cylindrical electrode, 4... Insulating coating.
Claims (1)
れ挟むように三層の電極を配設し、該三層の電極
のうち外側の電極を互いに電気的に接続したこと
を特徴とする円筒形磁器コンデンサ。 A cylindrical shape characterized by three layers of electrodes being arranged to sandwich two layers of cylindrical ceramic dielectric material having different thicknesses, and the outer electrodes of the three layers being electrically connected to each other. porcelain capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2125985U JPH0342670Y2 (en) | 1985-02-19 | 1985-02-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2125985U JPH0342670Y2 (en) | 1985-02-19 | 1985-02-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61138232U JPS61138232U (en) | 1986-08-27 |
| JPH0342670Y2 true JPH0342670Y2 (en) | 1991-09-06 |
Family
ID=30512494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2125985U Expired JPH0342670Y2 (en) | 1985-02-19 | 1985-02-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0342670Y2 (en) |
-
1985
- 1985-02-19 JP JP2125985U patent/JPH0342670Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61138232U (en) | 1986-08-27 |
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