WO2002043916A1 - Pate a souder - Google Patents
Pate a souder Download PDFInfo
- Publication number
- WO2002043916A1 WO2002043916A1 PCT/JP2001/010431 JP0110431W WO0243916A1 WO 2002043916 A1 WO2002043916 A1 WO 2002043916A1 JP 0110431 W JP0110431 W JP 0110431W WO 0243916 A1 WO0243916 A1 WO 0243916A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- solder
- solder paste
- flux
- lead
- rosin
- Prior art date
Links
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
- B23K35/36—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
-
- 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
- B23K35/3612—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 organic compounds as principal constituents
- B23K35/3613—Polymers, e.g. resins
-
- 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
- B23K35/36—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
- B23K35/3603—Halide salts
-
- 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
- B23K35/3612—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 organic compounds as principal constituents
- B23K35/3615—N-compounds
-
- 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
- B23K35/3612—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 organic compounds as principal constituents
- B23K35/3618—Carboxylic acids or salts
Definitions
- the present invention relates to a solder paste used for soldering electronic devices, and more particularly to a Sn-based lead-free solder paste.
- Sn-Pb alloys have been used as solder. Sn-Pb alloys have the characteristics of low melting point and good solderability. For example, the eutectic Sn63% -Pb37% alloy, which is the most typical solder, has a melting point of 183 ° C.
- SMT surface mounting technology
- a solder paste is supplied to a printed circuit board by printing or discharging, and a chip-type electronic component is temporarily fixed thereon by using the adhesive force of the solder paste, and the reflow soldering is performed.
- the printed circuit board is heated in a single furnace to melt the solder and fix and connect the components to the printed circuit board.
- lead-free solder that does not contain lead at all for soldering electronic devices.
- Lead-free solder must be an alloy composed of elements that are harmless to the human body. For example, harmful Cd cannot be used, even if it has the effect of lowering the melting temperature.
- Promising lead-free solders at this time are Sn-based alloys containing Sn as the main component and one or more alloying elements such as Ag, Cu, BuIn, Sb, and Zn.
- Sn-based solders containing Ag such as Sn-Ag alloys and Sn-Ag-Cu alloys (hereinafter referred to as Sn-Ag solders), have good wettability among lead-free solders. There is an advantage that it is easy to handle.
- the melting point of Sn_Ag-based lead-free solder is around 220 ° C, which is about 30-40 ° C higher than that of Sn-Pb eutectic solder, and the operating temperature (heating temperature during soldering) is correspondingly higher. Therefore, it may not be used for some heat-sensitive electronic components.
- Sn-based solder containing Zn (hereinafter referred to as Sn-Zn solder) is a harmless metal that is essential for the human body, has a large reserve, and is inexpensive compared to Ag, Cu, BuIn, etc. Since it is a safe metal, it is advantageous in terms of safety and economy.
- a typical composition of Sn-Zn based lead-free solder is Sn-9Zn. This solder has a melting point of 199 ° C and a melting point of about 20 ° C lower than that of Sn-Ag-based free solder. Therefore, Sn_Ag-based lead-free solder cannot be used. There is also an advantage that it can be used.
- Sn-based lead-free solder paste prepared by mixing Sn-based lead-free solder powder, including Sn-Ag-based and Sn-Zn-based solders, with a gin-based flux is referred to as Sn-Pb.
- Sn-Pb Sn-based lead-free solder paste
- the active Sn metal content in the solder powder is higher, so the solder powder and flux components, especially rosin flux, Reaction with activators generally contained is likely to occur. This reaction causes a change in the viscosity of the solder paste, which may cause a problem that the solder paste cannot be supplied properly by printing or discharging.
- solder paste made of Sn—Zn-based lead-free solder powder (hereinafter referred to as Sn—Zn-based solder paste).
- Zn is a metal that has a high ionization tendency and is easily oxidized.
- an oxide layer is formed on the surface of the solder powder that has come into contact with air, and this oxide layer deteriorates solder wettability.
- Sn-Zn solder paste prepared using a rosin-based flux the surface oxidation of the solder powder due to the reaction with flatus is more severe, and voids are generated due to extremely poor solder wettability. When solder balls are generated, soldering defects are likely to occur.
- the Sn-Zn solder paste coats the surface of the Sn-Zn solder powder with an appropriate material before mixing with the flux, and the solder powder reacts with the flux to cause surface oxidation. In some cases, techniques to prevent this are adopted.
- a noble metal such as Au or Pd
- An object of the present invention is to provide a Sn-based lead-free solder paste obtained by mixing a Sn-based lead-free solder powder with a rosin-based flux, particularly a rosin-based flatus containing an activator. It is to improve the solderability.
- Another object of the present invention is to provide the above-mentioned Sn-based lead-free solder paste in which the change in viscosity is suppressed and the wettability is good.
- Still another object of the present invention is to prevent the surface oxidation of the solder powder, which is particularly noticeable in the conventional Sn—Zn-based solder paste, without using the solder powder coating.
- An object of the present invention is to provide a Sn-based lead-free solder paste exhibiting excellent solderability, in particular, an Sn- ⁇ -based solder paste.
- the present invention is a solder paste obtained by mixing a Sn-based lead-free solder powder with a rosin-based flux, wherein the rosin-based flux is selected from isocyanuric acid and a derivative thereof having no hydroxyl group.
- a solder paste characterized by containing at least one kind of isocyanuric acid compound in an amount of 0.5 to 10.0% by mass.
- the present invention provides a solder paste obtained by mixing a Sn-based lead-free solder powder with a rosin-based flux, wherein the rosin-based flux is selected from salicylamide and a derivative thereof.
- a solder paste characterized by containing at least one salicylamide compound in an amount of 0.01 to 10.0% by mass.
- the rosin flux used for solder paste is generally produced by dissolving rosin in a solvent together with additives such as an activator and a thixotropic agent.
- additives such as an activator and a thixotropic agent.
- the type and amount of activator has a significant effect on the solder wettability of the solder paste.
- Sn-based lead-free solder has poor solder wettability compared to Sn_Pb-based solder.
- the spread rate of Sn-Ag-based lead-free solder is about 80% compared to that of Sn-Pb-based solder, and the spread rate of Sn-Zn-based lead-free solder is about 70%. Bad.
- soldering is performed in a heating furnace called a reflow furnace.
- Heating in a reflow furnace means that first heating is performed at a temperature of 150 ° C: up to 170 ° C for 30 seconds to 100 seconds, and then actual heating is performed at a temperature of solder melting temperature + 20 to 50 ° C.
- a two-stage heating method is common. Preheating is used to volatilize the solvent in the solder paste and at the same time reduce the heat shock of the parts.
- the materials used in the Sn-Pb eutectic solder paste are designed to perform optimally in this two-step heating.
- the activator partially starts reacting at around 150 ° C, which is the preheating temperature, and is designed to work completely at around 210 ° C to 230 ° C, which is the main heating temperature of Sn-Pb solder. Have been.
- Pb is a metal with low reactivity, even if an activator that starts activation at a low temperature around 150 ° C is used, almost no oxidation of the solder powder occurs during preheating .
- the zinc content exposed on the surface of the Sn-Zn-based solder powder already in the preheating stage is easily combined with oxygen in the reflow furnace, so that the solder powder is relatively thick. It has been found that an oxide layer may form. Even if the solder powder with an oxide layer formed by oxidation during pre-heating is heated, the solder powder will melt while covering the oxide layer on the surface. Remains. In addition, much of the flux is consumed by the reaction with the surface oxide layer of the solder powder, and the flux activity is weakened, so that the solder wettability is reduced and voids are generated inside the soldered portion. The generation of these solder balls and voids is a cause of poor soldering.
- solder paste since the solder is in a powder state and has a very large surface area, the oxidation of the Sn-Zn-based solder becomes severe during the preheating stage, and the adverse effect on the solderability is noticeable. It is presumed that it will be.
- Oxidation of the Sn—Zn-based solder powder in the preheating stage can be prevented by completely removing oxygen from the furnace atmosphere, such as in an N 2 reflow furnace.
- N 2 reflow furnaces are expensive and have high running costs.
- At least one isocyanuric acid compound selected from isocyanuric acid and a derivative having no hydroxyl group is added to a rosin-based flux used for preparing a solder paste by mixing with a solder powder. It has been found that oxidation of Sn-Zn solder powder can be prevented. It is not intended to be bound by any particular theory, but the reason is speculated as follows.
- Isocyanuric acid compounds generally have high heat resistance and do not undergo decomposition when heated under standard preheating conditions in a reflow oven, such as at 150 to 170 ° C for 30 to 100 seconds. Therefore, if the isocyanuric acid compound is included in the flux of the solder paste, the isocyanuric acid compound covers the surface of the Sn--Zn solder powder during preheating in the reflow furnace, effectively oxidizing the surface. Can be prevented.
- the rosin-based flux used for the solder paste contains an activator to improve wettability.
- activator a hydrohalide of an organic amine is usually used.
- the amine hydrohalide can react with the Sn—Zn solder powder before soldering, especially when the solder paste comes into contact with air during printing, in the presence of a polar substance. This reaction causes a change in the viscosity of the solder paste, which generally increases the viscosity, making it difficult to print well. This tendency is particularly strong in Sn-Zn-based lead-free pastes, and it is better to avoid using polar substances. Since the isocyanuric acid derivative having a hydroxyl group shows polarity, it is not used for the flat paste of the solder paste of the present invention.
- Isocyanuric acid compounds suitable for use in the present invention include isocyanuric acid of the formula: and derivatives thereof.
- R 2 to R 3 may be the same or different and each represents hydrogen, an alkyl group optionally substituted by halogen, or an aryl group.
- the alkyl group may be a lower alkyl group having 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms.
- a compound in which all of R 1 to R 3 are hydrogen is isocyanuric acid, and a compound in which these are all alkyl groups is a trialkyl isocyanurate.
- isocyanuric acid compounds include isocyanuric acid, trimethyl isocyanurate, triethyl isocyanurate, tripropyl isocyanurate, butyl isocyanurate, tris (2,3-dibromopropyl) isocyanurate, and triaryl isocyanurate. Is mentioned.
- One or more isocyanuric acid compounds can be used.
- Isoshianuru acid compounds for use in the present invention Isoshianuru acid, Contact and Isoshianuru Santo squirrel (iii port alkyl) esters which are R, to R 3 are haloalkyl groups by the above general formula, among them tris (2, 3- Dibromopropyl) isocyanurate, both of which may be used in combination.
- isocyanuric acid alone or as a mixture with another isocyanuric acid compound.
- the amount of the isocyanuric acid compound added to the rosin-based flatus should be in the range of 0.5 to 10.0 mass 0 / o.
- the addition amount is less than 0.5% by mass, the effect of preventing the surface oxidation of the Sn—Zn-based solder powder during preheating does not substantially appear, and if added over 10.0% by mass, Instead, the solderability is impaired.
- the preferred amount of Isoshianuru acid compound is from 2 to 6 mass 0/0.
- the solder paste comprises salicylamide (salicylamide). Acid Ami de) and at least one Sarichiruami de compound selected from derivatives 0.01 to 10.
- the rosin flux containing a proportion of 0 mass 0/0, and Sn-based lead-free'm powder It consists of a mixture.
- salicylamide compounds are preferentially adsorbed on the surface of the solder powder to allow solder powder and flux components, especially organic amine hydrohalides and organic compounds. It is considered that the reaction between the acid and the activator can be prevented. As a result, a change in the viscosity of the solder paste (mainly thickening) caused by such a reaction is prevented, and even if the solder paste is stored for a long period of time, the supply of the solder paste by printing or discharging is not hindered. It can be implemented. It was also found that the salicylamide compound did not inhibit the reflow properties of the solder paste.
- the content of the salicylamide compound in the rosin-based flux is less than 0.01% by mass, the above effect is not substantially observed.
- the content exceeds 10.0% by mass the melting property of the solder deteriorates, and the solder ball becomes poor. May occur.
- the amount of Sarichiruami de compound in the flux is preferably 0.1 to 3.0 mass 0/0.
- the salicylamide compound is adsorbed on the surface of the Sn-based lead-free solder powder in the solder paste, thereby suppressing the change in viscosity of the Sn-based lead-free solder paste. Seems to be effective. Therefore, instead of adding a salicylamide compound to the flux, a Sn-based lead-free solder powder is surface-treated by spraying, dipping, etc. using a solution of the salicylamide compound in an appropriate volatile organic solvent. The salicylamide compound may be previously adsorbed on the surface of the solder powder by evaporating the solvent.
- the Sn-based lead-free solder powder to which the salicylamide compound is attached by adsorption is used to remove the salicylamide compound. It can be mixed with rosin-based flattus that does not contain it to produce Solder Pace 1.
- the Sn-based lead free solder powder is surface-treated with a solution of a salicylamide compound in an organic solvent, and the obtained solder powder to which the salicylamide compound is adhered is mixed with a rosin flux. Also provided is a method for producing a Sn-based lead-free solder paste including the above.
- the flux used in the solder paste of the present invention is a rosin flux containing rosin as a main component.
- the rosin-based flux consists of rosin, activator, thixotropic agent, and solvent. Except that an isocyanuric acid compound or a salicylamide compound is compounded according to the present invention, the types and amounts of other components of the flux may be the same as those of the conventional rosin-based flux, and are not particularly limited.
- the flux of the solder paste of the present invention contains both the isocyanuric acid compound and the salicylamide compound in amounts within the above ranges, the solderability can be further improved.
- the mouth gin may be natural unmodified rosin such as gum mouth gin, tall oil rosin, wood resin, or modified rosin such as polymerized rosin, hydrogenated rosin, rosin ester, or rosin modified resin. Of course, two or more of these may be used in combination. It is preferable to use a hydrohalide of an organic amine, particularly a hydrobromide, as the activator.
- the organic amine may be any of primary (eg, ethylamine), secondary (eg, diethylamine), and tertiary (eg, triethylamine); heterocyclic amines such as pyridine; aromatic amines such as aniline; Alicyclic amines such as hexylamine, and compounds having two or more amino groups such as diphenylguanidine can also be used.
- primary eg, ethylamine
- secondary eg, diethylamine
- tertiary eg, triethylamine
- heterocyclic amines such as pyridine
- aromatic amines such as aniline
- Alicyclic amines such as hexylamine, and compounds having two or more amino groups such as diphenylguanidine can also be used.
- Organic acid activators such as stearic acid and sebacic acid or other activators may also be used, preferably in combination with amine hydrohalides.
- thixotropic agent hardened castor oil, amides and the like are generally used.
- the solvent include carbitols such as butyl carbitol and hexyl carbitol, and alcohols such as terbineol and halogenated alcohol.
- each of the above components in the flux is, for example, rosin 35 to 60%, activator 0.5 to 10%, and thixotropic agent 1 to 10% by mass%.
- the amount of the amine hydrohalide activator is 0.5-5%.
- the flux further contains an isocyanuric acid compound and / or a salicylamide compound according to the invention.
- the flux may contain one or more additives other than the above.
- the Sn-based lead-free solder powder used for the solder paste of the present invention is a powder of an alloy containing Sn as a main component and containing one or more elements of Ag, Cu, BuIn, Sb, and Zn. Is fine.
- Preferred Sn based lead-free solder Sn- Ag alloy (e.g., Sn- 3. 5A g), Sn - Ag- Cu alloys (e.g., Sn- 3 Ag_ 0. 5Cu), Sn- Zn alloy (e.g., Sn — 9Zn alloy) and Sn—Zn—Bi alloy (eg, Sn—8Zn—3Bi alloy).
- the numeral before the element means the content in mass% of the element.
- Sn-based lead-free solders are used for the purpose of further lowering the melting temperature, improving the mechanical strength, or suppressing oxidation, for example, Bu In. Ag, Ni, Co, Mo, Fe, P, Ge, Ga, etc. One or more of these may be further contained.
- the Sn-based lead-free solder is preferably an Sn-Zn-based solder such as a Sn-Zn alloy or a Sn-Zn-Bi alloy.
- the isocyanuric acid compound in the flux is very effective in preventing the solder powder from being oxidized in the preheating stage during reflow, and the Sn-Zn-based lead-free solder powder that is easily oxidized was used. A particularly large effect is obtained when applied to solder paste.
- the second embodiment of the present invention in which the flux contains a salicylamide compound is sufficient for solder paste using any Sn-based lead-free solder powder, including Sn—Ag alloy and Sn—Ag—Cu alloy.
- Sn-Zn solder is larger than that of Sn-Ag solder.
- solder powder is not particularly limited, it is usually a spherical powder, and is centrifugally sprayed. Or a gas atomizing method.
- the particle size of the solder powder may be the same as that of the conventional solder paste, usually about 200 to 400 mesh, but a powder of 500 mesh or finer can be used.
- the mixing ratio of the solder powder and the flatus may be set so as to obtain a solder paste having a viscosity suitable for printing or discharging.
- the flux is 5 to 20% by mass, and the balance is solder powder.
- the Sn- ⁇ -based lead-free solder paste prepared using the flux containing the isocyanuric acid compound according to the present invention was soldered under standard conditions in an air atmosphere reflow furnace.
- the amount of generated solder balls and the solderability were clearly superior.
- the conventional lead-free solder paste whose flux does not contain a salicylamide compound takes 6 weeks for the Sn-Ag solder and 1 for the more reactive Sn-Zn solder. In a week, the solder paste lost its paste state and became 'unusable'.
- the service life of the solder paste is more than doubled for the Sn—Ag solder and more than 6 times for the Sn—Zn solder. It has been demonstrated that the addition of can effectively suppress the change in viscosity.
- an Sn-based lead-free solder paste having improved solderability which can be soldered by a conventional reflow soldering method without any trouble.
- a solder paste using Sn-Zn-based lead-free solder which is easily oxidized, the generation of solder balls is suppressed by using the same amount of activator as before, and the wettability is improved.
- An excellent solder paste can be obtained.
- the change in viscosity of Sn-based lead-free solder paste including Sn-Ag and Sn-Zn is suppressed, The paste can be used for a long period of time, and printing and discharging work becomes easy.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Conductive Materials (AREA)
- Die Bonding (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60134781T DE60134781D1 (de) | 2000-11-29 | 2001-11-29 | Lötpasten |
US10/432,844 US6926849B2 (en) | 2000-11-29 | 2001-11-29 | Solder paste |
JP2002545879A JP4103591B2 (ja) | 2000-11-29 | 2001-11-29 | ソルダペースト |
EP01998186A EP1348513B1 (en) | 2000-11-29 | 2001-11-29 | Solder pastes |
KR1020037007186A KR100613640B1 (ko) | 2000-11-29 | 2001-11-29 | 땜납 페이스트 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-362985 | 2000-11-29 | ||
JP2000362985 | 2000-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002043916A1 true WO2002043916A1 (fr) | 2002-06-06 |
Family
ID=18834169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/010431 WO2002043916A1 (fr) | 2000-11-29 | 2001-11-29 | Pate a souder |
Country Status (9)
Country | Link |
---|---|
US (1) | US6926849B2 (ja) |
EP (1) | EP1348513B1 (ja) |
JP (1) | JP4103591B2 (ja) |
KR (1) | KR100613640B1 (ja) |
CN (1) | CN1247360C (ja) |
AT (1) | ATE400395T1 (ja) |
DE (1) | DE60134781D1 (ja) |
MY (1) | MY138347A (ja) |
WO (1) | WO2002043916A1 (ja) |
Cited By (7)
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JP2004322139A (ja) * | 2003-04-24 | 2004-11-18 | Tamura Kaken Co Ltd | 回路基板のバンプ形成用ソルダーペースト及びフラックス |
JP2006181635A (ja) * | 2004-12-28 | 2006-07-13 | Senju Metal Ind Co Ltd | 鉛フリーはんだの黒化防止方法およびソルダペースト |
JP2020011283A (ja) * | 2018-07-20 | 2020-01-23 | 千住金属工業株式会社 | ソルダペースト |
JP2020015087A (ja) * | 2018-07-27 | 2020-01-30 | 千住金属工業株式会社 | ソルダペースト |
JP2020015085A (ja) * | 2018-07-27 | 2020-01-30 | 千住金属工業株式会社 | ソルダペースト |
JP2020192549A (ja) * | 2019-05-27 | 2020-12-03 | 千住金属工業株式会社 | ソルダペースト |
WO2020262632A1 (ja) * | 2019-06-27 | 2020-12-30 | 株式会社弘輝 | フラックス及びソルダペースト |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60134781D1 (de) * | 2000-11-29 | 2008-08-21 | Matsushita Electric Ind Co Ltd | Lötpasten |
CN1303175C (zh) * | 2002-09-04 | 2007-03-07 | 纳美仕有限公司 | 导电性粘接剂及使用它的电路 |
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JP2004322139A (ja) * | 2003-04-24 | 2004-11-18 | Tamura Kaken Co Ltd | 回路基板のバンプ形成用ソルダーペースト及びフラックス |
JP2006181635A (ja) * | 2004-12-28 | 2006-07-13 | Senju Metal Ind Co Ltd | 鉛フリーはんだの黒化防止方法およびソルダペースト |
JP2020011283A (ja) * | 2018-07-20 | 2020-01-23 | 千住金属工業株式会社 | ソルダペースト |
JP2020015087A (ja) * | 2018-07-27 | 2020-01-30 | 千住金属工業株式会社 | ソルダペースト |
JP2020015085A (ja) * | 2018-07-27 | 2020-01-30 | 千住金属工業株式会社 | ソルダペースト |
JP2020192549A (ja) * | 2019-05-27 | 2020-12-03 | 千住金属工業株式会社 | ソルダペースト |
WO2020262632A1 (ja) * | 2019-06-27 | 2020-12-30 | 株式会社弘輝 | フラックス及びソルダペースト |
JPWO2020262632A1 (ja) * | 2019-06-27 | 2021-09-13 | 株式会社弘輝 | フラックス及びソルダペースト |
TWI753469B (zh) * | 2019-06-27 | 2022-01-21 | 日商弘輝股份有限公司 | 助焊劑及焊膏 |
US11806818B2 (en) | 2019-06-27 | 2023-11-07 | Koki Company Limited | Flux and solder paste |
Also Published As
Publication number | Publication date |
---|---|
KR20030055327A (ko) | 2003-07-02 |
US6926849B2 (en) | 2005-08-09 |
DE60134781D1 (de) | 2008-08-21 |
CN1478009A (zh) | 2004-02-25 |
JPWO2002043916A1 (ja) | 2004-04-02 |
JP4103591B2 (ja) | 2008-06-18 |
MY138347A (en) | 2009-05-29 |
CN1247360C (zh) | 2006-03-29 |
EP1348513A1 (en) | 2003-10-01 |
ATE400395T1 (de) | 2008-07-15 |
EP1348513B1 (en) | 2008-07-09 |
KR100613640B1 (ko) | 2006-08-17 |
EP1348513A4 (en) | 2007-04-04 |
US20040069974A1 (en) | 2004-04-15 |
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