JP3976020B2 - 表面実装用電子部品の表面実装構造 - Google Patents
表面実装用電子部品の表面実装構造 Download PDFInfo
- Publication number
- JP3976020B2 JP3976020B2 JP2004035498A JP2004035498A JP3976020B2 JP 3976020 B2 JP3976020 B2 JP 3976020B2 JP 2004035498 A JP2004035498 A JP 2004035498A JP 2004035498 A JP2004035498 A JP 2004035498A JP 3976020 B2 JP3976020 B2 JP 3976020B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- land
- electronic component
- surface mounting
- width
- 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 - Fee Related
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/111—Pads for surface mounting, e.g. lay-out
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3431—Leadless components
- H05K3/3442—Leadless components having edge contacts, e.g. leadless chip capacitors, chip carriers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09372—Pads and lands
- H05K2201/09381—Shape of non-curved single flat metallic pad, land or exposed part thereof; Shape of electrode of leadless component
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10621—Components characterised by their electrical contacts
- H05K2201/10636—Leadless chip, e.g. chip capacitor or resistor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/04—Soldering or other types of metallurgic bonding
- H05K2203/048—Self-alignment during soldering; Terminals, pads or shape of solder adapted therefor
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/20—Bump connectors, e.g. solder bumps or copper pillars; Dummy bumps; Thermal bumps
- H10W72/281—Auxiliary members
- H10W72/287—Flow barriers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49126—Assembling bases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.
- Y10T29/49144—Assembling to base an electrical component, e.g., capacitor, etc. by metal fusion
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Description
一方、近年、電子装置の小型化等を目的とした電子部品の高密度実装のため、電子部品の実装構造の主流は、リード部品を使用する挿入実装から表面実装用電子部品(チップ部品)を使用する表面実装へと変化している。
前記冷熱サイクル試験の結果、1000サイクル終了時点では、実施例及び両比較例とも、不合格となるようなクラック発生は観察されなかった。2000サイクル終了時点では、実施例の試料では不合格となるようなクラック発生は観察されなかった。しかし、比較例のうち、ランド間距離Lhが1.5mmのものに、クラック進行方向の厚さの1/2以上の長さのクラックが観察された不合格品が1個出た。
(1)回路基板11のランド12上に半田14により表面実装されるチップ部品13の実装構造において、ランド12は、表面実装の際の半田溶融時にチップ部品13の移動を規制する規制部12aと、電極15の両側にサイドフィレット16bを形成する凸部17とを備えている。従って、ランド12の幅Lwが電極15の両側に適正なサイドフィレット16bを形成するのに必要な「Lm×2」分、広くなっても、ランド12に印刷されたクリーム半田18上にチップ部品13をマウントして、半田を加熱溶融して半田接合した際に、チップ部品13の位置が所望の位置からずれるのを防止できる。そして、従来と同様の組立作業性を維持しながら、冷熱サイクルに対する耐クラック性を向上させることができる。例えば、冷熱サイクル試験で3000サイクル以上の耐クラック性を持つ。
実施形態は前記に限定されるものではなく、例えば、次のように具体化してもよい。
○ 表面実装に使用される半田は鉛と錫との合金に限らず、錫を主成分として鉛以外の金属との合金からなる所謂鉛フリー半田であってもよい。
(1)請求項1〜請求項6のいずれか一項に記載の発明において、前記ランドは、前記電極の端面と対応する部分及び前記凸部の幅方向における外形線が、前記規制部において屈曲するように形成されている。
Claims (6)
- 回路基板のランド上に表面実装用電子部品を半田により接合した表面実装用電子部品の表面実装構造であって、
前記電子部品は、複数の電極を縁部に備え、各電極は、少なくとも前記電子部品の下面と、両側面と、端面とを覆うように設けられ、前記ランドは、前記電極の両側にサイドフィレットを形成する凸部を備えるとともに前記ランドの前記電子部品の端面の幅と等しい部分と前記凸部との境界に存在して表面実装の際の半田溶融時に前記電子部品の移動を規制する規制部を備え、前記凸部は、前記電子部品の電極の側面に沿う方向において、前記電極の内側端部より対向するランド側へ、突出するように形成され、
前記電極の端面には該端面の幅と等しい幅の正面フィレットが形成され、前記サイドフィレットは前記正面フィレットとは独立して形成されるとともに、前記電極下面と前記ランドとの相対部分の内側両角部を覆うように形成されている表面実装用電子部品の表面実装構造。 - 前記凸部は、それぞれ前記電極の幅の10%以上、ランドの幅方向に突出されている請求項1に記載の表面実装用電子部品の表面実装構造。
- 前記ランドは、前記電子部品の電極の内側端部より電子部品の中央側へ突出する部分を備えている請求項1又は請求項2に記載の表面実装用電子部品の表面実装構造。
- 前記凸部は半径が電極の側面の長さ以下の長さの扇状に形成され、かつ扇の要の位置が前記電極の内側端部と対応する位置となるように形成されている請求項1〜請求項3のいずれか一項に記載の表面実装用電子部品の表面実装構造。
- 前記凸部は直径が電極の側面の長さより長い扇状に形成され、前記ランドの前記電子部品の中央側へ突出する部分は電極の幅方向全長に沿って形成されている請求項1〜請求項3のいずれか一項に記載の表面実装用電子部品の表面実装構造。
- 前記凸部は長方形状に形成され、前記電極の側面に沿う長さは電極の側面より長く形成され、前記ランドの前記電子部品の中央側へ突出する部分は電極の幅方向全長に沿って形成されている請求項1〜請求項3のいずれか一項に記載の表面実装用電子部品の表面実装構造。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004035498A JP3976020B2 (ja) | 2004-02-12 | 2004-02-12 | 表面実装用電子部品の表面実装構造 |
| EP20050002774 EP1565046A1 (en) | 2004-02-12 | 2005-02-10 | Surface mounting structure for surface mounting an electronic component |
| US11/056,749 US7186926B2 (en) | 2004-02-12 | 2005-02-11 | Surface mounting structure for surface mounting an electronic component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004035498A JP3976020B2 (ja) | 2004-02-12 | 2004-02-12 | 表面実装用電子部品の表面実装構造 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2005228885A JP2005228885A (ja) | 2005-08-25 |
| JP3976020B2 true JP3976020B2 (ja) | 2007-09-12 |
Family
ID=34697909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004035498A Expired - Fee Related JP3976020B2 (ja) | 2004-02-12 | 2004-02-12 | 表面実装用電子部品の表面実装構造 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7186926B2 (ja) |
| EP (1) | EP1565046A1 (ja) |
| JP (1) | JP3976020B2 (ja) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7645940B2 (en) * | 2004-02-06 | 2010-01-12 | Solectron Corporation | Substrate with via and pad structures |
| JP5150076B2 (ja) * | 2006-09-15 | 2013-02-20 | 株式会社豊田自動織機 | 表面実装用電子部品の表面実装構造 |
| JP4900057B2 (ja) * | 2006-12-13 | 2012-03-21 | 株式会社デンソー | 電子装置 |
| DE102006062494A1 (de) * | 2006-12-28 | 2008-07-03 | Robert Bosch Gmbh | Elektrische Vorrichtung mit einem Trägerelement mit zumindest einer speziellen Anschlussfläche und einem oberflächenmontierten Bauelement |
| JP2008227183A (ja) * | 2007-03-13 | 2008-09-25 | Fujitsu Ltd | プリント基板ユニットおよびプリント配線板 |
| JP4962217B2 (ja) * | 2007-08-28 | 2012-06-27 | 富士通株式会社 | プリント配線基板及び電子装置製造方法 |
| US9095066B2 (en) | 2008-06-18 | 2015-07-28 | Semiconductor Energy Laboratory Co., Ltd. | Printed board |
| JP5339968B2 (ja) * | 2009-03-04 | 2013-11-13 | パナソニック株式会社 | 実装構造体及びモータ |
| US8373075B2 (en) * | 2009-10-29 | 2013-02-12 | Medtronic, Inc. | Implantable co-fired electrical feedthroughs |
| WO2011112707A2 (en) | 2010-03-10 | 2011-09-15 | University Of Maine System Board Of Trustees | Attachment of a device to a substrate for operation under variable conditions |
| JP5608034B2 (ja) * | 2010-10-04 | 2014-10-15 | 京楽産業.株式会社 | プリント配線板への実装部品の実装方法 |
| KR20120131726A (ko) * | 2011-05-26 | 2012-12-05 | 삼성전기주식회사 | 적층형 캐패시터 및 그 제조방법 |
| DE102011115658A1 (de) * | 2011-09-28 | 2013-03-28 | Osram Opto Semiconductors Gmbh | Elektronische Anordnung |
| JP2013084771A (ja) * | 2011-10-11 | 2013-05-09 | Keihin Corp | プリント配線板 |
| JP5465281B2 (ja) * | 2012-06-28 | 2014-04-09 | 太陽誘電株式会社 | チップ部品の実装構造 |
| KR20140069582A (ko) * | 2012-11-29 | 2014-06-10 | 삼성디스플레이 주식회사 | 회로 기판 및 전자 부품을 회로 기판에 실장하는 방법 |
| US9768509B2 (en) * | 2013-08-09 | 2017-09-19 | Sumida Corporation | Antenna coil component, antenna unit, and method of manufacturing the antenna coil component |
| JP5713093B1 (ja) * | 2013-12-09 | 2015-05-07 | 株式会社豊田自動織機 | 基板 |
| JP5958479B2 (ja) * | 2014-01-31 | 2016-08-02 | 株式会社村田製作所 | 電子部品の実装構造体 |
| US20150364253A1 (en) * | 2014-06-12 | 2015-12-17 | Apple Inc. | Heel fillet capacitor with noise reduction |
| KR102379702B1 (ko) * | 2015-09-25 | 2022-03-28 | 삼성전자주식회사 | 인쇄회로기판 |
| JP2017084902A (ja) * | 2015-10-26 | 2017-05-18 | パナソニックIpマネジメント株式会社 | 実装基板及び電子装置 |
| US10512168B2 (en) * | 2016-02-18 | 2019-12-17 | Mitsubishi Electric Corporation | Electronic device and method of manufacturing the same |
| CN108781512A (zh) | 2016-03-30 | 2018-11-09 | 京瓷株式会社 | 高频基板、高频封装件以及高频模块 |
| US10879211B2 (en) | 2016-06-30 | 2020-12-29 | R.S.M. Electron Power, Inc. | Method of joining a surface-mount component to a substrate with solder that has been temporarily secured |
| JP7271094B2 (ja) * | 2018-06-19 | 2023-05-11 | キオクシア株式会社 | 半導体記憶装置 |
| JPWO2020188718A1 (ja) * | 2019-03-18 | 2021-10-14 | 三菱電機株式会社 | プリント配線板及び電子機器 |
| JP7123237B2 (ja) * | 2019-03-27 | 2022-08-22 | 三菱電機株式会社 | プリント配線板 |
| JP2025031250A (ja) * | 2023-08-25 | 2025-03-07 | 株式会社日立製作所 | 制御基板及びその製造方法 |
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| JPH1117308A (ja) | 1997-06-27 | 1999-01-22 | Kyocera Corp | 電子部品の実装構造 |
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| JP2001183687A (ja) * | 1999-12-22 | 2001-07-06 | Hitachi Ltd | 液晶表示装置 |
| JP2002353255A (ja) * | 2001-05-30 | 2002-12-06 | Moric Co Ltd | 半導体チップ半田付け用ランドパターン |
| JP2003031937A (ja) * | 2001-07-18 | 2003-01-31 | Sony Corp | 表面実装部品の半田付け用ランド構造 |
-
2004
- 2004-02-12 JP JP2004035498A patent/JP3976020B2/ja not_active Expired - Fee Related
-
2005
- 2005-02-10 EP EP20050002774 patent/EP1565046A1/en not_active Withdrawn
- 2005-02-11 US US11/056,749 patent/US7186926B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1565046A1 (en) | 2005-08-17 |
| JP2005228885A (ja) | 2005-08-25 |
| US20050178002A1 (en) | 2005-08-18 |
| US7186926B2 (en) | 2007-03-06 |
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