JPH045724U - - Google Patents
Info
- Publication number
- JPH045724U JPH045724U JP4632890U JP4632890U JPH045724U JP H045724 U JPH045724 U JP H045724U JP 4632890 U JP4632890 U JP 4632890U JP 4632890 U JP4632890 U JP 4632890U JP H045724 U JPH045724 U JP H045724U
- Authority
- JP
- Japan
- Prior art keywords
- ceramic
- ceramic substrate
- input
- electrode
- output terminal
- 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
- 239000000919 ceramic Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
第１図は本考案に係わるセラミツクフイルタの
一実施例を示すパツケージ実装状態の内部上面図
、第２図は本考案に係わるセラミツクフイルタの
回路図、第３図は第１図の−線断面図、第４
図は従来のセラミツクフイルタを示すパツケージ
実装状態内部の上面図、第５図は従来のセラミツ
クフイルタの回路図、第６図は第４図の−線
断面図である。
３２……セラミツクパツケージ、３３……セラ
ミツク基板、３４，３５，３６……コンデンサ、
３７，３８……セラミツク振動子、３９，４０，
４１……入出力端子、４２，４３，４４……リー
ド、４５，４６，４７……電極。
FIG. 1 is an internal top view showing an embodiment of the ceramic filter according to the present invention in a package-mounted state, FIG. 2 is a circuit diagram of the ceramic filter according to the present invention, and FIG. 3 is a sectional view taken along the line -- in FIG. 1. , 4th
5 is a circuit diagram of the conventional ceramic filter, and FIG. 6 is a sectional view taken along the line -- in FIG. 4. 32... Ceramic package, 33... Ceramic substrate, 34, 35, 36... Capacitor,
37, 38... Ceramic resonator, 39, 40,
41... Input/output terminal, 42, 43, 44... Lead, 45, 46, 47... Electrode.
Claims (1)
辺に各々３つの端子を有する表面実装用セラミツ
クパツケージに収納されたセラミツク基板と、厚
み滑り振動を有するストリツプ状のセラミツク振
動子と、セラミツク基板の表面および裏面の相対
する位置にそれぞれ設けられた電極により構成さ
れるコンデンサと、セラミツク基板裏面に設けら
れる電極と端子とを接続する入出力端子とにより
入力インピーダンスの平衡なラダー型回路が構成
されてなるセラミツクフイルタにおいて、電気的
に端子と電極とを接続するリードを電極を挟んで
入出力端子と相対した位置に設けたことを特徴と
するセラミツクフイルタ。 It consists of a box with a rectangular bottom and two opposing boxes.
A ceramic substrate housed in a surface-mount ceramic package with three terminals on each side, a strip-shaped ceramic resonator with thickness-shear vibration, and electrodes provided at opposing positions on the front and back surfaces of the ceramic substrate. In a ceramic filter, a ladder-type circuit with balanced input impedance is constructed by a capacitor formed by a capacitor and an input/output terminal that connects an electrode and a terminal provided on the back side of a ceramic substrate. A ceramic filter characterized in that a connecting lead is provided at a position facing an input/output terminal with an electrode in between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4632890U JPH045724U (en) | 1990-04-27 | 1990-04-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4632890U JPH045724U (en) | 1990-04-27 | 1990-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH045724U true JPH045724U (en) | 1992-01-20 |
Family
ID=31561316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4632890U Pending JPH045724U (en) | 1990-04-27 | 1990-04-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH045724U (en) |
-
1990
- 1990-04-27 JP JP4632890U patent/JPH045724U/ja active Pending