JP6540869B1 - はんだペースト - Google Patents
はんだペースト Download PDFInfo
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- JP6540869B1 JP6540869B1 JP2018184823A JP2018184823A JP6540869B1 JP 6540869 B1 JP6540869 B1 JP 6540869B1 JP 2018184823 A JP2018184823 A JP 2018184823A JP 2018184823 A JP2018184823 A JP 2018184823A JP 6540869 B1 JP6540869 B1 JP 6540869B1
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- Prior art keywords
- solder
- solder paste
- powder
- mass
- alloy composition
- Prior art date
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- 239000000843 powder Substances 0.000 claims abstract description 86
- 239000000203 mixture Substances 0.000 claims abstract description 40
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- 239000000956 alloy Substances 0.000 claims abstract description 38
- 230000004907 flux Effects 0.000 claims abstract description 37
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 27
- 230000008859 change Effects 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 11
- 229910052787 antimony Inorganic materials 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 238000003860 storage Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 4
- 230000036962 time dependent Effects 0.000 abstract description 3
- 229910016331 Bi—Ag Inorganic materials 0.000 abstract description 2
- 229910020836 Sn-Ag Inorganic materials 0.000 abstract description 2
- 229910020830 Sn-Bi Inorganic materials 0.000 abstract description 2
- 229910020888 Sn-Cu Inorganic materials 0.000 abstract description 2
- 229910020935 Sn-Sb Inorganic materials 0.000 abstract description 2
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- 229910017482 Cu 6 Sn 5 Inorganic materials 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- UNXHWFMMPAWVPI-UHFFFAOYSA-N Erythritol Natural products OCC(O)C(O)CO UNXHWFMMPAWVPI-UHFFFAOYSA-N 0.000 description 2
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- 125000003118 aryl group Chemical group 0.000 description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
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- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 2
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- 229910052732 germanium Inorganic materials 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 150000004678 hydrides Chemical class 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 2
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- 239000002184 metal Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- FTQWRYSLUYAIRQ-UHFFFAOYSA-N n-[(octadecanoylamino)methyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCNC(=O)CCCCCCCCCCCCCCCCC FTQWRYSLUYAIRQ-UHFFFAOYSA-N 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
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- 150000003839 salts Chemical class 0.000 description 2
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- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
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- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 description 2
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- 150000007934 α,β-unsaturated carboxylic acids Chemical class 0.000 description 2
- RUEBPOOTFCZRBC-UHFFFAOYSA-N (5-methyl-2-phenyl-1h-imidazol-4-yl)methanol Chemical compound OCC1=C(C)NC(C=2C=CC=CC=2)=N1 RUEBPOOTFCZRBC-UHFFFAOYSA-N 0.000 description 1
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- XZKLXPPYISZJCV-UHFFFAOYSA-N 1-benzyl-2-phenylimidazole Chemical compound C1=CN=C(C=2C=CC=CC=2)N1CC1=CC=CC=C1 XZKLXPPYISZJCV-UHFFFAOYSA-N 0.000 description 1
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- OJRJDENLRJHEJO-UHFFFAOYSA-N 2,4-diethylpentane-1,5-diol Chemical compound CCC(CO)CC(CC)CO OJRJDENLRJHEJO-UHFFFAOYSA-N 0.000 description 1
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- ZMWRRFHBXARRRT-UHFFFAOYSA-N 2-(benzotriazol-2-yl)-4,6-bis(2-methylbutan-2-yl)phenol Chemical compound CCC(C)(C)C1=CC(C(C)(C)CC)=CC(N2N=C3C=CC=CC3=N2)=C1O ZMWRRFHBXARRRT-UHFFFAOYSA-N 0.000 description 1
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- RJIQELZAIWFNTQ-UHFFFAOYSA-N 2-phenyl-1h-imidazole;1,3,5-triazinane-2,4,6-trione Chemical compound O=C1NC(=O)NC(=O)N1.C1=CNC(C=2C=CC=CC=2)=N1 RJIQELZAIWFNTQ-UHFFFAOYSA-N 0.000 description 1
- BKCCAYLNRIRKDJ-UHFFFAOYSA-N 2-phenyl-4,5-dihydro-1h-imidazole Chemical compound N1CCN=C1C1=CC=CC=C1 BKCCAYLNRIRKDJ-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- B23K35/02—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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3602—Carbonates, basic oxides or hydroxides
-
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C12/00—Alloys based on antimony or bismuth
-
- 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
-
- 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
- C22C13/02—Alloys based on tin with antimony or bismuth as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
-
- 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
-
- 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
- B23K2101/42—Printed circuits
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
-
- 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
- B23K35/264—Bi 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
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Abstract
Description
(1)Snを42質量%以上含有するはんだ粉末、酸化ジルコニウム粉末、及びフラックスを有するはんだペーストであって、酸化ジルコニウム粉末をはんだペーストの全質量に対して0.05〜20.0質量%含有することを特徴とする、粘性の経時変化が抑制されたはんだペースト。
本発明に係るはんだペーストは、はんだ粉末と、酸化ジルコニウム粉末からなるはんだ組成物と、フラックスとを有するとともに、酸化ジルコニウム粉末をはんだペーストの全質量に対して0.05〜20.0質量%含有し、粘性の経時変化が抑制されている。以下に、各成分について詳述する。
(1−1)粘性の経時変化が抑制されている
本発明に係るはんだペーストは、酸化ジルコニウム粉末を含有するため、経時変化に伴うペーストの粘度上昇を抑制することができる。これは、酸化ジルコニウムを含有することにより、はんだ粉末表面の酸化膜厚がフラックス中に投入した後でも維持するためと考えられる。詳細は不明であるが、以下のように推察される。通常、フラックスの活性成分は常温でもわずかに活性を有するため、はんだ粉末の表面酸化膜が還元により薄くなり、粉末同士が凝集する原因になっている。そこで、はんだペーストに酸化ジルコニウム粉末を所定量添加することで、フラックスの活性成分が酸化ジルコニウム粉末と優先的に反応し、はんだ粉末表面の酸化膜が凝集しない程度に維持されると推察される。
このような作用効果を十分に発揮するためには、はんだペースト中の酸化ジルコニウム粉末の含有量を0.05〜20.0%にする必要がある。0.05%未満では上記作用効果を発揮することができない。20.0%を超えると金属粉末の含有量を確保することができず、増粘防止効果を発揮することができない。酸化ジルコニウムの含有量は好ましくは0.05〜10.0%であり、より好ましい含有量は0.1〜3%である。
はんだペースト中の酸化ジルコニウム粉末の粒径は5μm以下であることが好ましい。粒径が5μm以下であるとペーストの印刷性を維持することができる。下限は特に限定されることはないが0.5μm以上であればよい。
酸化ジルコニウムの形状は特に限定されないが、異形状であればフラックスとの接触面積が大きく増粘抑制効果がある。球形であると良好な流動性が得られるためにペーストとしての優れた印刷性が得られる。所望の特性に応じて適宜形状を選択すればよい。
(2−1)合金組成
本発明のはんだ粉末としては、例えば、Sn−Cuはんだ合金、Sn−Agはんだ合金、Sn−Sbはんだ合金、Sn−Biはんだ合金、Sn−Znはんだ合金、Sn−Pbはんだ合金、Sn−Inはんだ合金、Bi−Cuはんだ合金、Zn−Alはんだ合金、Bi−Agはんだ合金を用いることができる。また、これらのはんだ合金を組み合わせた合金組成を有していてもよい。本発明のはんだ粉末がAg、Cu、Bi、Sb、Niを含有する場合には、各々の含有量は以下の通りである。
本発明に係るはんだ粉末組成の残部はSnである。前述の元素の他に不可避的不純物を含有してもよい。不可避的不純物を含有する場合であっても、前述の効果に影響することはない。
本発明に係るはんだペーストは、はんだ粉末をはんだペーストの全質量に対して35〜95%含有することが好ましい。この範囲であると他の成分が各々の添加効果を発揮するために十分な量になるため、はんだペーストが印刷性などの種々の特性を有することになる。
本発明のはんだ粉末は、JIS Z 3284−1:2014における粉末サイズの分類(表2)において記号1〜8に該当するサイズ(粒度分布)を有していると、微細な部品へのはんだ付けが可能となる。粒子状はんだ材料のサイズは、記号4〜8に該当するサイズであることがより好ましく、記号5〜8に該当するサイズであることがより好ましい。また、はんだ粉末の形状は特に限定されないが、球形であると良好な流動性が得られるためにペーストとしての優れた印刷性が得られる。その場合、真球度は0.90以上が好ましく、0.95以上がより好ましく、0.99以上が最も好ましい。
(3−1)フラックス組成物
本発明に係るはんだペーストは、フラックス組成物を含む。フラックス組成物は、有機酸、アミン、アミンハロゲン化水素酸塩、有機ハロゲン化合物、チキソ剤、ロジン、溶剤、界面活性剤、ベース剤、高分子化合物、シランカップリング剤、着色剤の何れか、または2つ以上の組み合わせである。
−1,3−プロパンジオール、1,2,6−トリヒドロキシヘキサン、ビス[2,2,2−トリス(ヒドロキシメチル)エチル]エーテル、1−エチニル−1−シクロヘキサノール、1,4−シクロヘキサンジオール、1,4−シクロヘキサンジメタノール、エリトリトール、トレイトール、グアヤコールグリセロールエーテル、3,6−ジメチル−4−オクチン−3,6−ジオール、2,4,7,9−テトラメチル−5−デシン−4,7−ジオール等が挙げられる。グリコールエーテル系溶剤としては、ジエチレングリコールモノ−2−エチルヘキシルエーテル、エチレングリコールモノフェニルエーテル、2−メチルペンタン−2,4−ジオール、ジエチレングリコールモノヘキシルエーテル、ジエチレングリコールジブチルエーテル、トリエチレングリコールモノブチルエーテル等が挙げられる。
(2)フラックスの含有量
フラックスの含有量は、はんだペーストの全質量に対して5〜60%であることが好ましい。この範囲であると、はんだ粉末に起因する増粘抑制効果が十分に発揮される。
合金組成A;Cu:0.7%、残部:Sn
合金組成B;Ag:3.0%、Cu:0.5%、残部:Sn
合金組成C;Ag:3.4%、Cu:0.7%、Sb:3.0%、Bi:3.2%、Ni:0.04%、Co:0.01%、残部:Sn
合金組成D;Ag:3.5%、残部:Sn
合金組成E;Ag:3.5%、Cu:0.5%、Sb:3.0%、残部:Sn
合金組成F;Ag:3.0%、Cu:0.5%、Ge:0.03%、残部:Sn
合金組成G;Ag:3.0%、Cu:0.5%、Fe:0.04%、残部:Sn
合金組成H;Ag:3.0%、Cu:0.5%、Co:0.08%、残部:Sn
合金組成I;Ag:3.5%、Cu:0.5%、Bi:3.0%、Ni:0.02%、残部:Sn
合金組成J;Sb:5.0%、残部:Sn
合金組成K;Bi:58%、残部:Sn
合金組成L;In:52%、残部:Sn
合金組成M;Al:2.0%、残部:Zn
Claims (10)
- Snを42質量%以上含有するはんだ粉末、酸化ジルコニウム粉末、及びフラックスを有するはんだペーストであって、
前記酸化ジルコニウム粉末を前記はんだペーストの全質量に対して0.05〜20.0質量%含有することを特徴とする、粘性の経時変化が抑制されたはんだペースト。 - 前記はんだ粉末の合金組成は、質量%で、Ag:0%超え10.0%以下を含有する、請求項1に記載のはんだペースト。
- 前記はんだ粉末の合金組成は、質量%で、Cu:0%超え10.0%以下を含有する、請求項1または2に記載のはんだペースト。
- 前記はんだ粉末の合金組成は、質量%で、Bi:0%超え70.0%以下を含有する、請求項1〜3のいずれか1項に記載のはんだペースト。
- 前記はんだ粉末の合金組成は、質量%で、Sb:0%超え20.0%以下を含有する、請求項1〜4のいずれか1項に記載のはんだペースト。
- 前記はんだ粉末の合金組成は、質量%で、Ni:0%超え20.0%以下を含有する、請求項1〜5のいずれか1項に記載のはんだペースト。
- 前記はんだ粉末の合金組成は、更に、質量%で、Co、Mn、Fe、Ge、Ga、Au、およびPtの1種以上を合計で0%超え10.0%以下含有する、請求項1〜6のいずれか1項に記載のはんだペースト。
- 前記はんだ粉末の合金組成は、質量%で、Ag:3.2〜3.8%、Cu:0.6〜0.8%、Sb:2〜5%、Ni:0.01〜0.2%、Bi:1.5〜5.5%、残部Snからなる、請求項1に記載のはんだペースト。
- 前記はんだ粉末の合金組成は、質量%で、Co:0.01〜0.1%を含有する、請求項8に記載のはんだペースト。
- 前記酸化ジルコニウム粉末の粒径は5μm以下である、請求項1〜9のいずれか1項に記載のはんだペースト。
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ES2981354T3 (es) | 2024-10-08 |
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