JP4432541B2 - 電子機器 - Google Patents
電子機器 Download PDFInfo
- Publication number
- JP4432541B2 JP4432541B2 JP2004063398A JP2004063398A JP4432541B2 JP 4432541 B2 JP4432541 B2 JP 4432541B2 JP 2004063398 A JP2004063398 A JP 2004063398A JP 2004063398 A JP2004063398 A JP 2004063398A JP 4432541 B2 JP4432541 B2 JP 4432541B2
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- Prior art keywords
- solder
- foil
- particles
- chip
- balls
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Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Die Bonding (AREA)
Description
Pbフリーはんだの主流はSn−Ag共晶系(融点:221℃)、Sn−Ag−Cu共晶系(融点:221〜217℃)、Sn−Cu共晶系(融点:227℃)になるが、表面実装におけるはんだ付け温度は部品の耐熱性から低いことが望ましいが、信頼性確保のためぬれ性を確保する必要性から、均熱制御に優れた炉を用いても、基板内の温度ばらつきを考慮すると、一番低い温度で可能なSn−Ag−Cu共晶系で235〜245℃くらいが実情である。従って、このはんだ付け温度に耐えられる階層用はんだとしては、融点が少なくても250℃以上である必要がある。現状で、これらのはんだと組合せて使用できる高温側の温度階層用Pbフリーはんだはない。最も可能性のある組成として、Sn−5Sb(融点:240〜232℃)はあるが、溶けてしまうので温度階層用にはならない。
(1)全く新規なはんだ接続による電子機器および電子機器の製造方法を提供することができる。
(2)電子機器の製造方法において必要となる温度階層接続におけるはんだ接続、特に高温側のはんだ接続を提供することができる。
(3)全く新規なはんだおよびその製造方法を提供することができる。
ものである。
2.Cuボール
3.Snボール
4.Sn
5.ロール
6.プラスチックボール
7.抵抗加熱体ツール
8.Siチップ
9.真空吸引穴
10.窒素
11.はんだ箔
12.シリコーンゲル
13.Al2O3基板
14.W(焼結)−Cuめっき電極
15.予熱用ヒータ
16.窒素
17.Cu,Sn混合箔
18.バンプ
19.軟らかい樹脂
20.リード
21.はんだボールバンプ
22.プリント基板
23.Alフィン
24.フィンとの接合部
25.リードとの接合部
26.リード
27.はんだ箔
28.基板の端子
29.モジュール基板
30.端子
31.Cu
32.有機基板
33.Cuスルーホール導体
34.Ag−Pd導体
35.ワイヤボンド
36.AlN中継基板
37.接続端子
38.Cr−Cu−Au
39.ダイボンド
40.はんだ箔
41.加圧体
42.Ni−Auめっきメタライズ
43.中継基板
44.Cr−Ni−Auメタライズ
45.化学Niめっき
46.電気Niめっき
47.はんだ
48.Cuデイスク
49.Cuベース
50. Al2O3絶縁基板
51.Cuリード
52.チップ部品
53.Cuパッド
54.TQFP−LSI
55.Sn−Ag−Cu系はんだ
56.リード
57.ダム切断部
58.樹脂
59.スルーホール
60.W−Ni−Au厚膜電極
61.W−Ni(もしくはAg−Pd、Ag)厚膜導体
62.Auめっき電極
63.かしめ部分
64.熱拡散板(ヘッダ)
65.リードフレーム
66.タブ
67.導電ペースト
68.はんだ
69.繊維
70.Cu網(横断面)
71.Cu網(長手断面)
72.はんだ(海)
73.細長い繊維
74.短冊繊維
Claims (5)
- チップ部品と、前記チップ部品を実装した第一の基板と、前記第一の基板を実装した第二の基板とを有する電子機器であって、
前記チップ部品と前記第一の基板との間の第一のはんだ接続部は、
Sn系はんだと複数のCu粒子と前記Cuよりも熱膨張係数の小さい他の粒子とを含んだはんだ箔を用いて、第一のはんだ付け温度で接続されて形成されたものであり、
前記第一の基板と前記第二の基板との間の第二のはんだ接続部は、
Sn-Ag系はんだ又はSn-Ag-Cu系はんだ又はSn-Cu系はんだを用いて、第二のはんだ付け温度で接続されて形成されたものであり、
前記第一のはんだ接続部では、
前記第二のはんだ付け温度では溶融しない前記Cu粒子と、
前記Sn系はんだが前記第一のはんだ付け温度で溶融して前記Cu粒子と反応することにより形成され、かつ、前記第二のはんだ付け温度では溶融しないCu6Sn5の金属間化合物と、
により前記チップ部品と前記第一の基板とが接続されていることを特徴とする電子機器。 - 請求項1記載の電子機器であって、
前記Cuよりも熱膨張係数の小さい他の粒子は、Niめっき又はNi/Auめっきされていることを特徴とする電子機器。 - 請求項1又は2記載の電子機器であって、
前記Cuよりも熱膨張係数の小さい他の粒子は、インバー合金、シリカ、アルミナ、窒化アルミニウム、炭化ケイ素のいずれかであることを特徴とする電子機器。 - 請求項1乃至3のいずれかに記載の電子機器であって、
前記Sn系はんだはSnであることを特徴とする電子機器。 - 請求項1乃至4のいずれかに記載の電子機器であって、
前記Cu粒子の径は、10μm以上40μm以下であることを特徴とする電子機器。
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JP2004063398A JP4432541B2 (ja) | 2000-12-21 | 2004-03-08 | 電子機器 |
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JP2000393267 | 2000-12-21 | ||
JP2004063398A JP4432541B2 (ja) | 2000-12-21 | 2004-03-08 | 電子機器 |
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JP2004247742A JP2004247742A (ja) | 2004-09-02 |
JP4432541B2 true JP4432541B2 (ja) | 2010-03-17 |
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JP2006167735A (ja) * | 2004-12-14 | 2006-06-29 | Hitachi Ltd | 機器、構造材等の製造法 |
JP5243823B2 (ja) * | 2008-03-19 | 2013-07-24 | 株式会社小松製作所 | 熱電モジュール |
JP2010108958A (ja) * | 2008-10-28 | 2010-05-13 | Kyocera Corp | 熱電モジュールおよびその製造方法 |
JP5436349B2 (ja) * | 2010-01-30 | 2014-03-05 | 三菱伸銅株式会社 | Ledチップとリードフレームとの接合方法 |
JP6969466B2 (ja) * | 2018-03-20 | 2021-11-24 | 三菱マテリアル株式会社 | 接合用成形体の製造方法及びこの方法で得た接合用成形体を用いた接合方法 |
DE102019217061A1 (de) * | 2019-11-06 | 2021-05-06 | Zf Friedrichshafen Ag | Anordnung mit einem Substrat für eine Aufnahme von wenigstens einem Halbleiterbauelement für einen Stromrichter und Verfahren zum Diffusionsverlöten wenigstens eines Halbleiterbauelements mit einem Substrat für einen Stromrichter |
JP7014991B1 (ja) | 2021-03-31 | 2022-02-02 | 千住金属工業株式会社 | プリフォームはんだ及びその製造方法、並びにはんだ継手の製造方法 |
CN114505572A (zh) * | 2022-04-07 | 2022-05-17 | 长沙学院 | 一种自动化焊接设备 |
DE102022207592A1 (de) | 2022-07-26 | 2024-02-01 | Zf Friedrichshafen Ag | Anbindung eines elektronischen Leistungsbauteils |
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