JPH0429308A - Electronic part - Google Patents

Electronic part

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Publication number
JPH0429308A
JPH0429308A JP13488790A JP13488790A JPH0429308A JP H0429308 A JPH0429308 A JP H0429308A JP 13488790 A JP13488790 A JP 13488790A JP 13488790 A JP13488790 A JP 13488790A JP H0429308 A JPH0429308 A JP H0429308A
Authority
JP
Japan
Prior art keywords
solder
electronic component
lead
lead terminals
lead 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
Application number
JP13488790A
Other languages
Japanese (ja)
Inventor
Yukihiro Koyama
小山 幸宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Corp
Original Assignee
TDK Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TDK Corp filed Critical TDK Corp
Priority to JP13488790A priority Critical patent/JPH0429308A/en
Publication of JPH0429308A publication Critical patent/JPH0429308A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To prevent electrolytic corrosion of a solder bridge or an electronic part element between lead terminals by covering a part adjacent to a soldered region at one end of the lead terminal with a solder outflow preventing film. CONSTITUTION:One end part of the lead terminals 31, 32 is soldered to an electronic part element 2 or output electrodes 51, 52 which are connected to the electronic part element 2, and the other end is a free end. A part adjacent to a soldered region at one end of the lead terminals 31, 32 is covered with a solder outflow preventing film 7. Therefore, generation of a solder lump is restrained and outflow of solder 61, 62 is prevented by the solder outflow preventing film 7. Thereby, it is possible to prevent generation of a solder bridge between the lead terminals 31, 32 due to heat during soldering to a printed circuit board and to eliminate outflow of the solders 61, 62 adhered to the output electrodes 51, 52 or to the lead terminals 31, 32 even if they are fused. Thereby, it is possible to eliminate invasion of soldering flux from a printed circuit board side and to prevent electrolytic corrosion of the electronic part element 2.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、電子部品素子とリード端子とを含む電子部品
に関し、リード端子は、半田付は領域に隣接した部分に
半田流出防止皮膜を有することにより、半田もしくは半
田塊の溶解または半田フラックス中の塩素、臭素系不純
物による回路パターンの電食または端子間短絡等を防止
できるようにしたものである。
[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an electronic component including an electronic component element and a lead terminal. This makes it possible to prevent electrical corrosion of circuit patterns or short circuits between terminals due to melting of solder or solder lumps or chlorine and bromine impurities in solder flux.

〈従来の技術〉 電子部品素子と、所定長さのり−上端子とを含む電子部
品は、一般に、ディスクリード%を子部品として知られ
、コンデンサ、インダクタもしくは抵抗等の受動回路部
品、能動回路部品、圧電部品、サーミスタまたはこれら
の複合部品が含まれる。第8図は、この種の電子部品の
平面部分断面図、第9図は同しくその側面部分断面図で
ある。
<Prior Art> An electronic component including an electronic component element and a predetermined length of glue-upper terminal is generally known as a disk lead% as a child component, and includes passive circuit components such as capacitors, inductors, or resistors, and active circuit components. , piezoelectric components, thermistors, or composite components thereof. FIG. 8 is a partial sectional plan view of this type of electronic component, and FIG. 9 is a partial sectional side view thereof.

1は電子部品素子2を有する基板、31.32はリード
端子、4は外装体である。
1 is a board having an electronic component element 2, 31 and 32 are lead terminals, and 4 is an exterior body.

基板1は、面上に電子部品素子2の取出電極51.52
を有している。リード端子31.32は、リード線やリ
ードフレーム等から得られた所定長さの線状部材となっ
ており、一端部が取出電極51.52に半田61.62
によって接合され、他端部が基板1の外部に導出される
自由端となっている。このリード端子31.32の自由
端側が図示しないプリント回路基板に挿着される。
The substrate 1 has lead electrodes 51 and 52 of the electronic component element 2 on its surface.
have. The lead terminals 31.32 are linear members of a predetermined length obtained from lead wires, lead frames, etc., and one end is soldered to the extraction electrode 51.52 at 61.62.
The other end is a free end that is led out to the outside of the substrate 1. The free ends of the lead terminals 31 and 32 are inserted into a printed circuit board (not shown).

外装体4は樹脂モールドまたは絶縁ケース等で構成され
ている。
The exterior body 4 is made of a resin mold, an insulating case, or the like.

〈発明が解決しようとする課題〉 しかしながら、上述した従来の電子部品には次のような
問題点がある。
<Problems to be Solved by the Invention> However, the above-described conventional electronic components have the following problems.

(A)第10図に示すように、半田61.62によって
、リード端子31.32を取出電極51.52に半田付
けする際、リード端子31.32の表面に沿って半田が
流出して半田塊6363を生しる。上述の半田61.6
2及び半田塊63が、プリント回路基板に半田付けする
際の熱によって溶融して流れ出し、リード端子31−3
2間で半田ブリッジ64を生しることがある。
(A) As shown in FIG. 10, when the lead terminal 31.32 is soldered to the lead electrode 51.52 using the solder 61.62, the solder flows out along the surface of the lead terminal 31.32, causing the solder to melt. A lump 6363 is produced. Solder 61.6 mentioned above
2 and the solder lump 63 melt and flow out due to the heat generated during soldering to the printed circuit board, and the lead terminal 31-3
A solder bridge 64 may occur between the two.

(B)第11図に示すように、プリント回路基板に実装
する際の半田処理熱によって溶融した半田65が、リー
ド端子31.32と外装体4との界面を通って流出し、
プリント回路基板へ実装する際の半田付は用フラックス
が侵入し、電子部品素子2の電食等の致命的欠陥を生じ
ることがあった。
(B) As shown in FIG. 11, the solder 65 melted by the soldering heat during mounting on the printed circuit board flows out through the interface between the lead terminals 31 and 32 and the exterior body 4.
During soldering during mounting on a printed circuit board, flux may infiltrate and cause fatal defects such as electrolytic corrosion of the electronic component element 2.

そこで、本発明の課題は、上述する従来の問題点を解決
し、リード端子間の半田ブリッジまたは電子部品素子の
電食を防止し得る電子部品を提供することである。
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electronic component that can solve the above-mentioned conventional problems and prevent solder bridges between lead terminals or electrolytic corrosion of electronic component elements.

く課題を解決するための手段〉 上述した従来の問題点を解決するため、本発明は、電子
部品素子と、所定長さのリード端子とを含み、前記リー
ド端子の一端部が前記電子部品素子または前記電子部品
素子に導通する取出電極に半田付けされ、他端側か自由
端となっている電子部品であって、 前記リード端子は、前記一端部側の半田付は領域に隣接
した部分が半田流出防止皮膜によって覆われていること を特徴とする。
Means for Solving the Problems> In order to solve the above-mentioned conventional problems, the present invention includes an electronic component element and a lead terminal of a predetermined length, and one end of the lead terminal is connected to the electronic component element. or an electronic component that is soldered to a lead-out electrode that conducts to the electronic component element and has the other end or a free end, and the lead terminal has a portion adjacent to the soldering area on the one end side. It is characterized by being covered with a solder leakage prevention film.

〈作用〉 リード端子は、取出電極に半田付けされる一端部に隣接
した導出基部の付近に半田流出防止皮膜を有するので、
リード端子を取出電極に半田付けする際の半田及び半田
フラックスが、半田流出防止皮膜を越えて流出するのを
防止できる。このため、余分な半田付着を防止し、半田
塊の発生を抑制し、半田仕上がりを良好にできるように
なると共に、フラックスの効果を充分に発揮させ、半田
付は時間を短縮し、半田付は作業効率を向上させること
ができる。
<Function> Since the lead terminal has a solder leakage prevention film near the lead-out base adjacent to one end that is soldered to the lead-out electrode,
Solder and solder flux when soldering a lead terminal to an extraction electrode can be prevented from flowing out beyond the solder flow prevention film. For this reason, it is possible to prevent excess solder adhesion, suppress the generation of solder lumps, and achieve a good solder finish, as well as fully demonstrate the effect of flux, shorten the soldering time, and reduce the soldering time. Work efficiency can be improved.

リード端子は、取出電極に半田付けされる一端部に隣接
した導出基部の付近に半田流出防止皮膜を有するので、
半田塊の発生が抑制されると共に、半田流出防止膜によ
る半田の流出を防止できる。ことのために、プリント回
路基板に半田付けする際の熱によつリード端子間で半田
ブリッジを生じるのを防止できる。
Since the lead terminal has a solder leakage prevention film near the lead-out base adjacent to one end that is soldered to the lead-out electrode,
The generation of solder lumps is suppressed, and the solder leakage prevention film can prevent solder from flowing out. As a result, it is possible to prevent solder bridges from occurring between the lead terminals due to heat during soldering to a printed circuit board.

更に、プリント回路基板への実装時に、取出電極または
り−上端子に付着している半田が仮に溶融した場合であ
っても、流出することがないし、プリント回路基板側か
ら半田付は用フラックスが侵入することもない。このた
め、電子部品素子の電食を防止できる。
Furthermore, even if the solder adhering to the lead electrode or upper terminal melts during mounting on the printed circuit board, it will not flow out, and the soldering flux will be removed from the printed circuit board side. No intrusion. Therefore, electrolytic corrosion of electronic component elements can be prevented.

〈実施例〉 第1図は本発明に係る電子部品の平面部分断面図、第2
図は同じく側面部分断面図である。図において、第8図
及び第9図と同一の参照符号は、同一性ある構成部分を
示している。リード端子31.32は、第3図に拡大し
て示すように、先端部が上部クリップ片311.321
と下部クリップ片312.322を有するクリップ状と
なっていて、上部クリップ片311.321と、下部ク
リップ片312.322との間に基板1を挟込み、上部
クリップ片311.321を取出電極51.52に半田
61.62によって接合しである。リード端子31.3
2の形状及び個数は任意である。
<Example> Fig. 1 is a plan partial cross-sectional view of an electronic component according to the present invention;
The figure is also a side partial sectional view. In the figure, the same reference numerals as in FIGS. 8 and 9 indicate the same components. As shown in an enlarged view in FIG.
The substrate 1 is sandwiched between the upper clip piece 311.321 and the lower clip piece 312.322, and the upper clip piece 311.321 is removed from the electrode 51. .52 with solder 61 and 62. Lead terminal 31.3
The shape and number of 2 are arbitrary.

リード端子31.32は、取出電極51.52に半田付
けされる上部クリップ片311.321に隣接した導出
基部の付近に半田流出防止膜[7を有する。半田流出防
止膜[7は、シリコーン系、エポキシ系、ポリイミド系
、ポリアミド系、ナイロン系、BTレジン系または感光
性レジストから選らばれたレジスト剤を、リード端子に
塗布付着させるか、またはテープ化して巻付けるかによ
って形成できる。
The lead terminals 31.32 have a solder flow prevention film [7] near the lead-out base adjacent to the upper clip piece 311.321 soldered to the extraction electrode 51.52. Solder flow prevention film [7] is a resist agent selected from silicone, epoxy, polyimide, polyamide, nylon, BT resin, or photosensitive resist, which is coated on the lead terminal or made into a tape. It can be formed by winding it.

上述のように、リード端子31.32は、取出電極51
.52に半田付けされる一端部に隣接した導出基部の付
近に半田流出防止皮膜7を有するので、リード端子31
.32を取出電極51.52に半田付けする際の半田6
1.62及び半田フラックスが流出するのを防止できる
。このため、余分な半田付着を防止し、半田塊の発生を
抑制し、半田61.62の仕上がりを良好にできるよう
になると共に、フラックスの効果を充分に発揮させ、半
田付は時間を短縮し、半田付は作業効率を向上させるこ
とかできる。
As mentioned above, the lead terminals 31 and 32 are connected to the extraction electrode 51.
.. Since the solder leakage prevention film 7 is provided near the lead-out base adjacent to one end to be soldered to the lead terminal 31
.. Solder 6 when soldering 32 to the extraction electrodes 51 and 52
1.62 and solder flux can be prevented from flowing out. This prevents excessive solder adhesion, suppresses the generation of solder lumps, and improves the finish of solder 61 and 62. It also allows the flux to take full advantage of its effects, reducing soldering time. , soldering can improve work efficiency.

また、半田塊の発生が抑制されると共に、半田流出防止
膜7による半田61.62の流出を防止できるために、
プリント回路基板に半田付けする際に、リード端子31
−32間で半田ブリッジを生じるのを防止できる。
Further, since the generation of solder lumps is suppressed and the solder 61, 62 can be prevented from flowing out by the solder leakage prevention film 7,
When soldering to the printed circuit board, the lead terminal 31
-32 can be prevented from forming a solder bridge.

更に、プリント回路基板への実装時に、取出電極または
リード端子に付着している半田61.62が、仮に溶融
しても、流出することがないし、プリント回路基板側か
ら半田付は用フラックスが侵入することもない。このた
め、電子部品素子2の電食を防止できる。
Furthermore, even if the solder 61, 62 attached to the extraction electrode or lead terminal melts during mounting on the printed circuit board, it will not flow out, and the soldering flux will not enter from the printed circuit board side. There's nothing to do. Therefore, electrolytic corrosion of the electronic component element 2 can be prevented.

リード端子31.32としては、第4図に示すように、
基板の1の両面側で半田付けするような構造、或いは第
5図に示すように、クリップ部を持たないストレート状
のもの等、その形状は、任意に選定できる。
As the lead terminals 31 and 32, as shown in Fig. 4,
The shape can be arbitrarily selected, such as a structure in which soldering is performed on both sides of the board 1, or a straight shape without a clip portion as shown in FIG. 5.

基板1及び電子部品素子2は機能的に互いに独立するも
のであってもよいし、一体化されたものであってもよい
。前者の代表的な例は、基板1を支持基板とし、その上
に受動回路部品、能動回路部品またはこれらの複合部品
等でなる電子部品素子2を搭載するような場合であり、
後者の代表例は、例えばコンデンサ、圧電部品、サーミ
スタ等のように、基板1を説電体基板、圧電基板または
サーミスタ基板によって構成し、その上に電極を形成し
て、電子部品素子を形成するような場合である。
The substrate 1 and the electronic component element 2 may be functionally independent from each other, or may be integrated. A typical example of the former is a case where the substrate 1 is used as a support substrate, and an electronic component element 2 made of a passive circuit component, an active circuit component, or a composite component thereof is mounted thereon.
A typical example of the latter is, for example, a capacitor, a piezoelectric component, a thermistor, etc., in which the substrate 1 is composed of an electrostatic substrate, a piezoelectric substrate, or a thermistor substrate, and electrodes are formed thereon to form an electronic component element. This is the case.

第5図はコンデンサに本発明を適用した具体例を示し、
誕電体磁器で構成された基板1の両面に電極21.22
を形成し、電極21.22にリード端子31.32を半
田61.62によって接合しである。リード端子31.
32の導出基部は半田流出防止膜7によって覆われてい
る。
FIG. 5 shows a specific example of applying the present invention to a capacitor,
Electrodes 21 and 22 are placed on both sides of the substrate 1 made of porcelain.
are formed, and lead terminals 31.32 are bonded to electrodes 21.22 with solder 61.62. Lead terminal 31.
The lead-out base 32 is covered with a solder leakage prevention film 7.

第7図は圧電部品に本発明を適用した例を示し、圧電素
体でなる基板1の相対向両面に振動電極23.24を形
成し、振動電極23.24を取出室81i51,52に
導通させである。そして、取出電極51.52にリード
端子4.4を半田61.62によって接合しである。リ
ード端子4の導出基部は、半田流出防止膜7によって覆
われている。この第7図のり−上端子及び半田流出防止
膜7の構成は、第1図〜第3図と同様である。
FIG. 7 shows an example in which the present invention is applied to a piezoelectric component, in which vibrating electrodes 23 and 24 are formed on opposite surfaces of the substrate 1 made of a piezoelectric element, and the vibrating electrodes 23 and 24 are electrically connected to the extraction chambers 81i51 and 52. It's a shame. Then, the lead terminals 4.4 are joined to the extraction electrodes 51.52 by solder 61.62. The lead-out base of the lead terminal 4 is covered with a solder leakage prevention film 7. The structure of the glue-upper terminal and solder leakage prevention film 7 in FIG. 7 is the same as that in FIGS. 1 to 3.

完成品としては、振動電g 23.24のまわりの領域
Aに振動空間が生じるようにして、全体を樹脂モールド
し、またはケースによって覆う。
As a finished product, the whole is molded with resin or covered with a case so that a vibration space is created in the area A around the vibrating electric g23.24.

図示は省略するが、本発明は他のコンデンサ、インダク
タもしくは抵抗等の受動回路部品、能動回路部品、圧電
部品、サーミスタまたはこれらの複合部品にも適用でき
、上述した作用効果が得られる。
Although not shown in the drawings, the present invention can be applied to other passive circuit components such as capacitors, inductors, or resistors, active circuit components, piezoelectric components, thermistors, or composite components thereof, and the above-mentioned effects can be obtained.

〈発明の効果〉 以上述べたように、本発明によれば、次のような効果が
得られる。
<Effects of the Invention> As described above, according to the present invention, the following effects can be obtained.

(a)リード端子は、取出電極に半田付けされる端部に
隣接した導出基部の付近に半田流出防止皮膜を有するの
で、余分な半田付着を防止し、半田塊の発生を抑制し、
半田仕上がりを良好にできるようになると共に、フラッ
クスの効果を充分に発揮させ、半田付は時間を短縮し、
半田付は作業効率を向上させた電子部品を提供できる。
(a) The lead terminal has a solder flow prevention film near the lead-out base adjacent to the end to be soldered to the lead-out electrode, so it prevents excess solder from adhering and suppresses the generation of solder lumps.
In addition to being able to achieve a good solder finish, the effect of flux is fully demonstrated, and the soldering time is shortened.
Soldering can provide electronic components with improved work efficiency.

(b)リード端子は、取出電極に半田付けされる一i部
に隣接した導出基部の付近に半田流出防止皮膜を有する
ので、プリント回路基板に半田付けする際の熱によっリ
ード端子間で半田ブリッジを生じることのない電子部品
を提供できる。
(b) Since the lead terminal has a solder leakage prevention film near the lead-out base adjacent to the part I to be soldered to the lead-out electrode, the heat generated when soldering to the printed circuit board causes the solder to flow between the lead terminals. It is possible to provide electronic components that do not cause bridging.

(C)リード端子は、取出電極に半田付けされる一端部
に隣接した導出基部の付近に半田流出防止皮膜を有する
ので、プリント回路基板側から半田付は用フラックスの
侵入を防ぎ、電子部品素子の電食を防止した電子部品を
提供できる。
(C) The lead terminal has a solder leakage prevention film near the lead-out base adjacent to one end that is soldered to the lead-out electrode, so it prevents soldering flux from entering from the printed circuit board side and prevents the soldering flux from entering the electronic component element. It is possible to provide electronic components that are prevented from electrolytic corrosion.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係る電子部品の平面部分断面図、第2
図は同しく側面部分断面図、第3図は同しく要部の拡大
斜視図、第4図は本発明に係る電子部品の更に別の実施
例における部分断面図、第5区は同しく更に別の実施例
における部分断面図、第6図は同しく更に別の実施例に
おける部分断面図、第7図は同じく更に別の実施例にお
ける部分断面図、第8図は従来の電子部品の平面部分断
面図、第9図は同じくその側面部分断面図、第10図及
び第11図は同じくその問題点を示す平面部分断面図で
ある。 1・・・基板    2・・・電子部品素子31.32
・・ ・リード端子 51.52・・・取出電極 61.62・・・半田 7・・・半田流出防止膜 弔 閲 第 鮪 第 図
FIG. 1 is a partial cross-sectional plan view of an electronic component according to the present invention, and FIG.
3 is an enlarged perspective view of the main part, FIG. 4 is a partial sectional view of yet another embodiment of the electronic component according to the present invention, and the 5th section is a further FIG. 6 is a partial sectional view of yet another embodiment; FIG. 7 is a partial sectional view of yet another embodiment; FIG. 8 is a plan view of a conventional electronic component. FIG. 9 is a side partial sectional view, and FIGS. 10 and 11 are plan partial sectional views showing the problem. 1... Board 2... Electronic component element 31.32
・Lead terminal 51.52...Extraction electrode 61.62...Solder 7...Solder leakage prevention film

Claims (3)

【特許請求の範囲】[Claims] (1)電子部品素子と、所定長さのリード端子とを含み
、前記リード端子の一端部が前記電子部品素子または前
記電子部品素子に導通する取出電極に半田付けされ、他
端側が自由端となっている電子部品であつて、 前記リード端子は、前記一端部側の半田付け領域に隣接
した部分が半田流出防止皮膜によって覆われていること を特徴とする電子部品。
(1) It includes an electronic component element and a lead terminal of a predetermined length, one end of the lead terminal is soldered to the electronic component element or an extraction electrode electrically connected to the electronic component element, and the other end is a free end. An electronic component characterized in that a portion of the lead terminal adjacent to the soldering area on the one end side is covered with a solder flow prevention film.
(2)前記半田流出防止皮膜は、シリコーン系、エポキ
シ系、ポリイミド系、ポリアミド系、ナイロン系、BT
レジン系または感光性レジストから選らばれたレジスト
剤であることを特徴とする請求項1に記載の電子部品。
(2) The solder leakage prevention film may be silicone-based, epoxy-based, polyimide-based, polyamide-based, nylon-based, or BT.
The electronic component according to claim 1, characterized in that the resist agent is selected from resin-based resists or photosensitive resists.
(3)前記半田流出防止皮膜は、シリコーン系、エポキ
シ系、ポリイミド系、ポリアミド系、ナイロン系、BT
レジン系または感光性レジストの何れかでなるテープ材
であることを特徴とする電子部品。
(3) The solder leakage prevention film may be silicone-based, epoxy-based, polyimide-based, polyamide-based, nylon-based, BT
An electronic component characterized in that it is a tape material made of either a resin type or a photosensitive resist.
JP13488790A 1990-05-24 1990-05-24 Electronic part Pending JPH0429308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13488790A JPH0429308A (en) 1990-05-24 1990-05-24 Electronic part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13488790A JPH0429308A (en) 1990-05-24 1990-05-24 Electronic part

Publications (1)

Publication Number Publication Date
JPH0429308A true JPH0429308A (en) 1992-01-31

Family

ID=15138837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13488790A Pending JPH0429308A (en) 1990-05-24 1990-05-24 Electronic part

Country Status (1)

Country Link
JP (1) JPH0429308A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2919213A1 (en) * 2007-07-23 2009-01-30 Commissariat Energie Atomique METHOD OF SOLDING TWO ELEMENTS BETWEEN THEM USING A BRASURE MATERIAL

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2919213A1 (en) * 2007-07-23 2009-01-30 Commissariat Energie Atomique METHOD OF SOLDING TWO ELEMENTS BETWEEN THEM USING A BRASURE MATERIAL
EP2022588A1 (en) * 2007-07-23 2009-02-11 Commissariat A L'energie Atomique Method of welding two elements together by means of a brazing material

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