JPS6086893A - Method of bonding electronic part - Google Patents

Method of bonding electronic part

Info

Publication number
JPS6086893A
JPS6086893A JP19428483A JP19428483A JPS6086893A JP S6086893 A JPS6086893 A JP S6086893A JP 19428483 A JP19428483 A JP 19428483A JP 19428483 A JP19428483 A JP 19428483A JP S6086893 A JPS6086893 A JP S6086893A
Authority
JP
Japan
Prior art keywords
lead
solder
electronic component
bat
jig
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
JP19428483A
Other languages
Japanese (ja)
Inventor
均 小田島
川名 武
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP19428483A priority Critical patent/JPS6086893A/en
Publication of JPS6086893A publication Critical patent/JPS6086893A/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、複数個のリードを有する電子部品を回路基板
に対して半田付は接合する方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method of soldering or joining an electronic component having a plurality of leads to a circuit board.

〔発明の背景〕[Background of the invention]

回路基板上にt子部品を半田付けして接合する従来の方
法の一例を第1〜第8図について説明する。
An example of a conventional method for soldering and joining t-shirt components onto a circuit board will be described with reference to FIGS. 1 to 8.

第1図は基板1とこれに取付けるべき電子部品4との接
合前の状態を示す。本例の場合、電子部品4には8本の
リード5が設けられてbる。
FIG. 1 shows a state before a substrate 1 and an electronic component 4 to be attached thereto are bonded. In this example, the electronic component 4 is provided with eight leads 5.

基板1の表面に設けた導体2の、リード5を接合すべき
個所に半田ペースト6を付着させて、半田バットIが構
成されている。
A solder bat I is formed by attaching a solder paste 6 to a portion of a conductor 2 provided on the surface of a substrate 1 to which a lead 5 is to be bonded.

第2図に示すように、導体2の上に半田ペースト6を付
着させて構成した8個の半田バットJの上にそれぞれリ
ード5を搭載し、この状態で方り熱装置(図示せず)′
にょ仄半田の溶融温度以上に加熱して半田をリフローさ
せ、冷却凝固せしめて第3図のように接合、導通せしめ
る。
As shown in FIG. 2, a lead 5 is mounted on each of the eight solder bats J formed by adhering solder paste 6 on the conductor 2, and in this state a heating device (not shown) is installed. ′
The solder is reflowed by heating it to a temperature higher than the melting temperature of the solder, and the solder is cooled and solidified to form a bond and conduction as shown in FIG.

以上のような従来の接合方法におしては、次記のような
技術的困難がある。
The conventional bonding method described above has the following technical difficulties.

第1図の如く、基板1上の導体2の上に半田ペースト3
を付着させた状態の一例の拡大断面を第4図に示す。本
例におしては、半田ベース)3,3.3の高さに’1 
* A!の差を生じて込る。
As shown in Figure 1, solder paste 3 is placed on the conductor 2 on the board 1.
FIG. 4 shows an enlarged cross-section of an example of the state in which it is attached. In this example, the solder base) is '1' at the height of 3, 3.3.
*A! This causes a difference in

このような高低差は一般に零とすることが困難である。It is generally difficult to eliminate such a height difference.

従ってこれらの半田ペースト3の上に電子部品のり一ド
5をのせたとき、第5図のように隙間札ができる。
Therefore, when electronic component glue 5 is placed on these solder pastes 3, a gap tag is formed as shown in FIG.

一方、電子部品5に設けた複数個のり−ド5の相互間に
も、第6図に示したように先端高さの差A4が生じる。
On the other hand, as shown in FIG. 6, there is also a difference A4 in the tip height between the plurality of glueds 5 provided on the electronic component 5.

又電子部品4の運搬時及び搭載時等の取扱いのときにリ
ードを曲げる虞れも有る。特に・数十率ものリードを持
つLSIの場合は、製造後ベビーボードに半田付で仮付
けされ、検査工程を経て、基板組立工程に供給され、こ
の組立工程にbwて、LSI部品はベビーボードがはず
された後、第1図、第2図に示すように基板に設置する
。上述の搬送工程及びその前後にリードを変形させる虞
れが大きい。第7図に実線で示した5bは正常な形状の
リード、仮想線で示した5aは上方に曲げ変形され友リ
ード、同じ<50は下方に曲げ変形されたリードである
Furthermore, there is a risk that the leads may be bent during handling such as when transporting and mounting the electronic component 4. In particular, in the case of an LSI with dozens of leads, after manufacturing it is temporarily soldered onto a baby board, passed through an inspection process, and then supplied to the board assembly process. After it is removed, it is placed on the board as shown in FIGS. 1 and 2. There is a large possibility that the lead will be deformed during the above-mentioned conveyance process and before and after the conveyance process. In FIG. 7, 5b shown by a solid line is a lead with a normal shape, 5a shown by a phantom line is a friend lead bent upward and deformed, and <50 is a lead bent downward deformed.

このようにしてリードの先端部が上方に”l+又は下方
にh6変位する場合が少なくない。
In this way, the tip of the lead is often displaced upward by ``l+'' or downward by h6.

上記のように変形したリードを半田ペースト3の上に載
置すると、第8図のように隙間A7ができる。
When the lead deformed as described above is placed on the solder paste 3, a gap A7 is created as shown in FIG.

以上の各租原因による隙間がある状態でこれを加熱して
半田全リフローさせて接合すると第9.10図のように
接合品質の不均一を生じ、接合不良のリードや接合不能
のリードができる。
If there are gaps due to the above reasons, and the gaps are heated and the solder is completely reflowed, the quality of the bond will be uneven, as shown in Figure 9.10, resulting in leads that are poorly bonded or cannot be bonded. .

特に第10図の7口<、わずかに接合している状態では
、電気的には接続してbるため、電気的検査では不良と
判定できず、機械的に力を〃口えて行う必要があシ、多
くの時間を要シ、ている。このように接合不完全な製品
は、振動などによって剥がれ易く、信頼性、耐久性に欠
ける。
In particular, in the state where the 7th hole in Figure 10 is slightly connected, it is electrically connected, so it cannot be determined that it is defective by electrical inspection, and it is necessary to perform it with mechanical force. However, it takes a lot of time. Products with such incomplete bonding tend to peel off due to vibrations, etc., and lack reliability and durability.

〔発明の目的〕[Purpose of the invention]

本発明は上述の事情に鑑みて為されたもので、その目的
とするところは、半田バットの高さが不揃いでありたり
リード形状に若干の変形を生じたりしても、容易に完全
な半田付けを行ない得る接合方法を提供するにある。
The present invention was made in view of the above-mentioned circumstances, and its purpose is to easily complete soldering even if the height of the solder bat is uneven or the lead shape is slightly deformed. The object of the present invention is to provide a joining method that can perform attachment.

[発明の概要] 上記の目的を達成するため、本発明の接合方法は、基板
上に設けたバットの上に、接合すべき電子部品のリード
を載置した状態で半田バットをT熱、浴融せしめる電子
部品の接合方法において、前記を子部品のリードの基端
付近をほぼ水平に形成するとともに、該リードの中央付
近を基端部に対して鈍角に直線状とし、更に訪リード先
端付近を水平面に対して鋭角をなすように折り曲げ、上
記の如く形成し7’C’に子部品リードを半田バット上
に載置し、かつ、前記のリード基端部のほぼ水平な部分
及び中央付近の傾斜部に対応する面を有する治具によっ
て電子部品リード全圧下し、訪リードを弾性的に撓ませ
た状態に保持して半田バラ)を加熱溶融せしめることを
特徴とする。
[Summary of the Invention] In order to achieve the above-mentioned object, the bonding method of the present invention involves placing the leads of the electronic components to be bonded on the bat provided on the board, and applying T-heat to the solder bat. In a method for joining electronic components by melting, the base end of the lead of the child component is formed almost horizontally, the center of the lead is formed in a straight line at an obtuse angle with respect to the base end, and the lead near the tip of the lead is formed substantially horizontally. Bend it to make an acute angle with respect to the horizontal plane, form it as above, place the child component lead on the solder bat at 7'C', and place the almost horizontal part of the base end of the lead and near the center. The electronic component lead is fully compressed using a jig having a surface corresponding to the inclined portion of the solder, and the lead is held in an elastically bent state to heat and melt the solder pieces.

〔発明の実施例〕[Embodiments of the invention]

次に、本発明の実施例を第11図乃至第26図について
説明する。
Next, an embodiment of the present invention will be described with reference to FIGS. 11 to 26.

第11図は本発明の一実施例におけるリード5の形状を
示し、第12図にはその拡大図を示す。
FIG. 11 shows the shape of the lead 5 in one embodiment of the present invention, and FIG. 12 shows an enlarged view thereof.

本例に卦いて、リード5の形状は半田ペースト3と接す
る面に対し鋭角(θl)をなように形成する。上記θ、
は水平面Bとの隙間A、o によシ決められる。Alo
 は決起(イ)、←)を勘案して適宜に定める。
In this example, the shape of the lead 5 is formed at an acute angle (θl) with respect to the surface in contact with the solder paste 3. The above θ,
is determined by the gap A,o with respect to the horizontal plane B. Alo
shall be determined as appropriate, taking into account the uprising (a), ←).

0) 前述した半田ペーストの高低差及びリード形成時
のバラツキ。
0) The height difference of the solder paste mentioned above and the variation in lead formation.

(切 各種取扱す時(LSIではベビーボードからの分
離時等)に発生する曲シ量。
(Off) The amount of bending that occurs during various handling operations (such as when separating an LSI from a baby board).

上記Alo の値は通常の条件では0.5m以内の程度
が適正値である。θ、は90度以内とし、リード水平な
基端部5−に対して鈍角に折り曲げた形に中央部5fを
ほぼ直線状に成形し、先端部5gは既述の如く水平面に
対して鋭角θ、にする。
Under normal conditions, the appropriate value of Alo is within 0.5 m. θ is within 90 degrees, the central portion 5f is bent at an obtuse angle with respect to the horizontal base portion 5- of the lead, and the central portion 5f is formed into a substantially linear shape, and the tip portion 5g is formed at an acute angle θ with respect to the horizontal plane as described above. , make it.

破線で示したように0.を90度内外にすると、後述の
工程でこのリードの基端部を圧下したときに該リードが
撓みにくいので不具合である。
0 as shown by the broken line. If it is turned inward or outward at 90 degrees, this is a problem because the lead will not easily bend when the proximal end of the lead is rolled down in the process described later.

第12図に実線で示したリード5が搬送途中の取扱いな
どによって変形した状態を第13図に示す。
FIG. 13 shows a state in which the lead 5 shown by a solid line in FIG. 12 has been deformed due to handling during transportation.

本図は前に説明した第7図に対応する図で、正常な形の
り−ド5bが5α、 5cの如く変形すると高低差’I
t e Aljを生じる。
This figure corresponds to the previously explained figure 7, and shows that when the normal shape of the board 5b is deformed as 5α and 5c, the height difference 'I
yields t e Alj.

上記のように構成したり−ド5を圧下するため第14図
に示すような治具8を構成する。この治具8は、リード
5の水平な基端部5Cに当接する水平面8#と、傾斜角
0.の中央付近に当接する斜面8fとを形成しである。
In order to lower the door 5 as described above, a jig 8 as shown in FIG. 14 is constructed. This jig 8 has a horizontal surface 8# that comes into contact with the horizontal base end 5C of the lead 5, and an inclination angle of 0. A slope 8f that comes into contact with the center of the plate is formed.

斜面8fは、リードの中央部5fのほぼ上半部に当接す
るように設定する。電子部品40頂面と治具8との間に
は隙間へ、を設けである。
The slope 8f is set so as to come into contact with substantially the upper half of the center portion 5f of the lead. A gap is provided between the top surface of the electronic component 40 and the jig 8.

第15図は、半田ペースト6の上にリード5を搭載し、
電子部品4の上にt−た前記の治具8に力を加えて圧下
した状態金示す。ただし、本例に置込では上記の圧下刃
は治具8の自重である。
FIG. 15 shows the lead 5 mounted on the solder paste 6,
The state in which the jig 8 placed above the electronic component 4 is rolled down by applying force is shown. However, in the case of placing in this example, the above-mentioned reduction blade is the weight of the jig 8.

リード5の先端部5!卦よび中央部5fの先端側の約半
分(治具8に当接してい々b部分)が撓んで、リード先
端部5gと半田バット30表面との為す角θ、が殆ど零
になる。(詳しくは、殆ど零となる程度の力を加えて圧
下する)。本実施例におしては、治具8の重量Wを適宜
に設定し、その自重によって角θ、′が殆ど零になるよ
うにしである。
Tip 5 of lead 5! Approximately half of the tip side of the central portion 5f (the part b in contact with the jig 8) is bent, and the angle θ between the lead tip portion 5g and the surface of the solder bat 30 becomes almost zero. (Specifically, press down by applying almost zero force). In this embodiment, the weight W of the jig 8 is set appropriately so that the angles θ and ' become almost zero due to its own weight.

第16図は治具8(仮想線で示す)を電子部品4の上に
載置した状態を説明するための斜視図である。
FIG. 16 is a perspective view for explaining a state in which the jig 8 (indicated by imaginary lines) is placed on the electronic component 4.

第17図においてはリードの正常な形を破線5bで示し
、このリードが上方に変形したところを実線5αで描し
である。この上に治具8を載置すると斜面8jの下縁付
近がリード5αに強く当接し、これを正常な形状5bの
ように変形させる。第18図は半田ペースト3上に置い
たリード5の上に治具8(仮想線で示す)を漬込てその
自重でリード5を圧下した状態の斜視図である。
In FIG. 17, the normal shape of the lead is shown by a broken line 5b, and the upwardly deformed part of the lead is shown by a solid line 5α. When the jig 8 is placed on top of this, the vicinity of the lower edge of the slope 8j comes into strong contact with the lead 5α, deforming it into the normal shape 5b. FIG. 18 is a perspective view of a state in which a jig 8 (indicated by a phantom line) is dipped onto the lead 5 placed on the solder paste 3 and the lead 5 is pushed down by its own weight.

第19図は、第17図に示したように上方に変形してい
たリード5αが治具8に圧下されて正常な形状5b(破
線)になった状態を示す。第20図は上記の状態にかけ
る全体的断面図である。
FIG. 19 shows a state in which the lead 5α, which had been deformed upward as shown in FIG. 17, has been rolled down by the jig 8 and has become a normal shape 5b (broken line). FIG. 20 is an overall sectional view in the above state.

第21図には、治具8を乗せた電子部品を加熱している
所であシ、7は加熱体である。第22図は前記リード5
の先端部に上記治具8の押圧力(重さ)によって、リー
ドの先端部をたわませている力が、半田ペースト3の加
熱によって、半田ペースト3が溶解し、上記たわみが解
放されるため、溶解した半田ペースト3の中にくいこん
でいる図である。これが半田ペースト上面の高低差及び
リード形成時の寸法のバラツキによって発生するリード
浮きを防止する。
In FIG. 21, an electronic component with a jig 8 mounted thereon is heated, and 7 is a heating element. FIG. 22 shows the lead 5
The force that bends the tip of the lead due to the pressing force (weight) of the jig 8 on the tip of the lead is melted by the heating of the solder paste 3, and the deflection is released. Therefore, the solder paste 3 is embedded in the melted solder paste 3. This prevents lead floating caused by height differences on the top surface of the solder paste and variations in dimensions during lead formation.

上記は本発明の一実施例を説明したが、治具8の自重の
みによらず第23図(A−0に示すように%電子部品の
基板への搭載後にお込て、上記治具8と同形状をした成
形具10を上下機構(図示せず)によって動作させた後
に接合しても同様の効果が得られる。
Although one embodiment of the present invention has been described above, the weight of the jig 8 is not limited to the weight of the jig 8, and as shown in FIG. The same effect can be obtained even if the forming tool 10 having the same shape is operated by an up-and-down mechanism (not shown) and then joined.

第23図に)は半田ペースト3によって構成した半田パ
ッドJと、電子部品4に固着されたり一ド5とを対間せ
しめた状態を示し、同図ψ)はノ1ンダバッ)Jの上に
リード5を載置した状態を示している。第23図軒)の
ように11−ド5の上に形成具10を乗せる。上記の成
形具10は、前記の治具8と同形状のリード押圧部10
αと押圧杆10bとを一体連設したものである。第25
図ψ)の如く、形成具10の押圧杆、10bに矢印P方
向の押圧力を加えつつ加熱体7によって半田ペースト3
を加熱溶融せしめて前記実施例におけると同様に半田付
を行なう。
Figure 23) shows a pair of solder pads J made of solder paste 3 and a pad 5 fixed to an electronic component 4; A state in which the lead 5 is placed is shown. Place the forming tool 10 on top of the 11-door 5 as shown in Fig. 23 eaves. The above forming tool 10 has a lead pressing section 10 having the same shape as the above jig 8.
α and a pressing rod 10b are integrally connected. 25th
As shown in FIG.
are heated and melted, and soldering is performed in the same manner as in the previous embodiment.

〔発明の効果〕〔Effect of the invention〕

以上詳述したように、本発明の接合方法によれば、半田
パッドの高さが不揃いであったり、電子部品のリード形
状に若干の歪みがあったりしても、容易に完全な半田付
けを行なうことができる。
As detailed above, according to the bonding method of the present invention, complete soldering can be easily achieved even if the heights of the solder pads are uneven or the lead shape of the electronic component is slightly distorted. can be done.

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

第1図〜第10図は半田バットを用いた従来技術による
接合方法を示し、第1図〜第3図は接合工程図、第4図
は半田ペーストの断面図、第5図は半田ペーストにリー
ドを置いた状態の断面図、第6図はリード形状を示す斜
視図、第7図はリードの変形の説明図、第8図は半田ペ
ーストとリードとの関係図、第9図及び第10図は接合
状態の説明図、第11図は本発明の1実施例における部
品、第12図は同じくリード形状の説明図、第13図は
同じくリードの変形状態の説明図、第14図は同じく治
具の部分的断面図、第15図は同じく治具の説明図、第
16図〜第22図は同じく工程説明図、第23図0)〜
0は上記と異なる実施例の工程説明図である。 1・・・基板 2・・・導体 3・・・半田ペースト 4・・・電子部品5・・・リー
ド 7・・・加熱体 8・・・治具 10・・・成形具 第1図 第2図 ぐ 第4図 第5図 も6図 喚6図 第9図 第11図 男I2V 、夷13図 劉14図 第15図 劉16図 η170 第19図
Figures 1 to 10 show a conventional bonding method using a solder bat, Figures 1 to 3 are bonding process diagrams, Figure 4 is a cross-sectional view of the solder paste, and Figure 5 shows the solder paste. 6 is a perspective view showing the shape of the leads, FIG. 7 is an explanatory diagram of deformation of the leads, FIG. 8 is a diagram of the relationship between the solder paste and the leads, and FIGS. 9 and 10. 11 is an explanatory diagram of the bonded state, FIG. 11 is an explanatory diagram of parts in one embodiment of the present invention, FIG. 12 is an explanatory diagram of the lead shape, FIG. 13 is an explanatory diagram of the deformed state of the lead, and FIG. 14 is an explanatory diagram of the deformed state of the lead. A partial sectional view of the jig, FIG. 15 is an explanatory diagram of the jig, FIGS. 16 to 22 are process explanatory diagrams, and FIG. 23 is an explanatory diagram of the jig.
0 is a process explanatory diagram of an example different from the above. 1... Board 2... Conductor 3... Solder paste 4... Electronic component 5... Lead 7... Heating body 8... Jig 10... Molding tool Fig. 1 Fig. 2 fig.

Claims (1)

【特許請求の範囲】[Claims] 基板上に゛設けた半田バットの上に、接合すべき電子部
品のリード金載置した状態で半田バットを加熱、溶融せ
しめる電子部品の接合方法において、前記電子部品のリ
ードの基端付近をほぼ水平に形成するとともに、該リー
ドの中央付近を基端部に対して鈍角な直線状とし、更に
該リード先端付近を水平面に対して鋭角を々すように折
り曲げ、上記の如く形成した電子部品リードを半田バッ
ト上に載置し、かつ、前記のリード基端部のほぼ水平な
部分及び中火付近の傾斜部に対応する面を有する治具に
よって電子部品リードを圧下し、該リードを弾性的に撓
ませた状態に保持して半田バットを加熱浴融せしめるこ
とを特徴とするt子部品の接合方法。
In a method for joining electronic components, in which a lead metal of an electronic component to be bonded is placed on a solder bat provided on a board, and the solder bat is heated and melted, the vicinity of the base end of the lead of the electronic component is heated and melted. An electronic component lead formed as described above, which is formed horizontally, has a straight line near the center thereof at an obtuse angle with respect to the base end, and further bends the near end of the lead at an acute angle with respect to the horizontal plane. is placed on a soldering bat, and the electronic component lead is pressed down using a jig having a surface corresponding to the almost horizontal part of the base end of the lead and the inclined part near the medium heat, and the lead is made elastic. A method for joining T-piece parts, which comprises melting a solder bat in a heating bath while holding the solder bat in a bent state.
JP19428483A 1983-10-19 1983-10-19 Method of bonding electronic part Pending JPS6086893A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19428483A JPS6086893A (en) 1983-10-19 1983-10-19 Method of bonding electronic part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19428483A JPS6086893A (en) 1983-10-19 1983-10-19 Method of bonding electronic part

Publications (1)

Publication Number Publication Date
JPS6086893A true JPS6086893A (en) 1985-05-16

Family

ID=16322039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19428483A Pending JPS6086893A (en) 1983-10-19 1983-10-19 Method of bonding electronic part

Country Status (1)

Country Link
JP (1) JPS6086893A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04219990A (en) * 1990-12-20 1992-08-11 Matsushita Electric Ind Co Ltd Joining method for lead of ic component

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04219990A (en) * 1990-12-20 1992-08-11 Matsushita Electric Ind Co Ltd Joining method for lead of ic component

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