KR101004589B1 - 기능 부품용 리드와 그 제조 방법 - Google Patents
기능 부품용 리드와 그 제조 방법 Download PDFInfo
- Publication number
- KR101004589B1 KR101004589B1 KR1020097006095A KR20097006095A KR101004589B1 KR 101004589 B1 KR101004589 B1 KR 101004589B1 KR 1020097006095 A KR1020097006095 A KR 1020097006095A KR 20097006095 A KR20097006095 A KR 20097006095A KR 101004589 B1 KR101004589 B1 KR 101004589B1
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- South Korea
- Prior art keywords
- lead
- solder
- metal powder
- powder
- package
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 26
- 230000008569 process Effects 0.000 title claims description 24
- 229910000679 solder Inorganic materials 0.000 claims abstract description 200
- 239000000843 powder Substances 0.000 claims abstract description 79
- 229910052751 metal Inorganic materials 0.000 claims abstract description 68
- 239000002184 metal Substances 0.000 claims abstract description 68
- 239000000463 material Substances 0.000 claims abstract description 56
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- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 229910017482 Cu 6 Sn 5 Inorganic materials 0.000 claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 43
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- 229910052802 copper Inorganic materials 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
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- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
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- 230000009931 harmful effect Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
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- 239000011733 molybdenum Substances 0.000 description 1
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C13/00—Alloys based on tin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0244—Powders, particles or spheres; Preforms made therefrom
- B23K35/025—Pastes, creams, slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
- B23K35/262—Sn as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/302—Cu as the principal constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/02—Alloys based on copper with tin as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/02—Containers; Seals
- H01L23/06—Containers; Seals characterised by the material of the container or its electrical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
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- H—ELECTRICITY
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- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
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- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L24/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/00014—Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
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- H01—ELECTRIC ELEMENTS
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- H01—ELECTRIC ELEMENTS
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- H01—ELECTRIC ELEMENTS
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- H—ELECTRICITY
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- H01L2924/01322—Eutectic Alloys, i.e. obtained by a liquid transforming into two solid phases
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/095—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00 with a principal constituent of the material being a combination of two or more materials provided in the groups H01L2924/013 - H01L2924/0715
- H01L2924/097—Glass-ceramics, e.g. devitrified glass
- H01L2924/09701—Low temperature co-fired ceramic [LTCC]
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- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T428/12063—Nonparticulate metal component
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
Description
Claims (9)
- 땜납을 사용하여 패키지와 접합되는 기능 부품용 리드에 있어서, 리드와, 그 리드의 편면에 형성된 납땜성이 우수한 금속의 도금층과, 그 도금층의 표면에 형성된, 고상선 온도 400 ℃ 이상의 Cu 계 금속 분말과 Cu6Sn5 의 금속간 화합물과 Sn 함유 무연 땜납으로 이루어지는 두께 5 ∼ 40 ㎛ 의 땜납층으로 이루어지고, 그 땜납층에서는 무연 땜납의 매트릭스 중에 Cu 계 금속 분말이 분산되어 있고, 게다가 그 Cu 계 금속 분말의 주위에는 Cu6Sn5 의 금속간 화합물이 존재하고 있으며, 또 이 금속간 화합물은 상기 도금층 표면에 접합되어 있음과 함께 금속간 화합물끼리가 적어도 일부 연결되어 있는 것을 특징으로 하는 기능 부품용 리드.
- 제 1 항에 있어서, 상기 납땜성이 우수한 금속이, Sn, Cu, Ag, Sn-Cu 합금, Sn-Ag 합금에서 선택된 어느 것인 것을 특징으로 하는 기능 부품용 리드.
- 제 1 항 또는 제 2 항에 있어서, 상기 Cu 계 금속 분말이, 순 Cu 분말 또는 Cu 계 합금 분말인 것을 특징으로 하는 기능 부품용 리드.
- 제 1 항 또는 제 2 항에 있어서, 상기 Cu 계 금속 분말에는, 0.03 ∼ 0.3 ㎛ 의 Ni 도금이 실시되어 있는 것을 특징으로 하는 기능 부품용 리드.
- 제 1 항 또는 제 2 항에 있어서, 상기 무연 땜납이, 순 Sn 또는 Sn 계 합금인 것을 특징으로 하는 기능 부품용 리드.
- (A) 편면에 납땜성이 우수한 금속이 도금된 리드 재료판의 그 도금면에, 고상선 온도 400 ℃ 이상의 Cu 계 금속 분말과 Sn 함유의 무연 땜납 분말과 플럭스로 이루어지는 솔더 페이스트를 일정 두께로 도포하는 공정;(B) 상기 솔더 페이스트가 도포된 리드 재료판을, 무연 땜납의 액상선 온도 이상, Cu 계 금속 분말의 고상선 온도 이하로 가열하여, 리드 재료판의 도금면에 땜납층을 형성하고, 그 땜납층의 무연 땜납의 매트릭스 중에 Cu 계 금속 분말이 분산되고, 그 Cu 계 금속 분말의 주위에 Cu6Sn5 의 금속간 화합물이 존재하며, 게다가 금속간 화합물은 리드 재료판에 접합됨과 함께 금속간 화합물끼리가 적어도 일부 연결되도록 하는 가열 공정;(C) 편면에 상기 땜납층이 형성된 리드 재료판을 세정액으로 세정하여 플럭스 잔사를 완전히 제거하는 공정; 및(D) 상기 플럭스 잔사가 제거된 리드 재료판을 가공하여 소정 형상의 리드를 형성하는 공정;으로 이루어지는 것을 특징으로 하는 기능 부품용 리드의 제조 방법.
- 제 6 항에 있어서, 상기 납땜성이 우수한 금속 도금이, Sn, Cu, Ag, Sn-Cu 합금, Sn-Ag 합금의 어느 것인 것을 특징으로 하는 기능 부품용 리드의 제조 방법.
- 제 6 항 또는 제 7 항에 있어서, 상기 Cu 계 금속 분말이, 순 Cu 분말 또는 Cu 계 합금 분말인 것을 특징으로 하는 기능 부품용 리드의 제조 방법.
- 제 6 항 또는 제 7 항에 있어서, 상기 Sn 함유의 무연 땜납이, 순 Sn 또는 Sn 계 합금인 것을 특징으로 하는 기능 부품용 리드의 제조 방법.
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US20100291399A1 (en) | 2010-11-18 |
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KR20090046954A (ko) | 2009-05-11 |
WO2008026761A1 (fr) | 2008-03-06 |
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