摘要:
A bonding structure body in which a semiconductor element and an electrode are bonded via a solder material, wherein a part that allows bonding has a first intermetallic compound layer that has been formed on the electrode side, a second intermetallic compound layer that has been formed on the semiconductor element side, and a third layer that is constituted by a phase containing Sn and a sticks-like intermetallic compound part, which is sandwiched between the two layers of the first intermetallic compound layer and the second intermetallic compound layer, and the sticks-like intermetallic compound part is interlayer-bonded to both of the first intermetallic compound layer and the second intermetallic compound layer.
摘要:
The solder composition comprises particles of a thermodynamically metastable alloy. One of the elements of the alloy will form an intermetallic compound with a metal surface. The solder composition is particularly suitable for use in bumping of semiconductor devices.
摘要:
A homogenous brazing material essentially consisting of relatively low amounts of silver and nickel together with copper, zinc, and other constituents is provided. The brazing material has a working temperature exceeding 630° F. and is preferably between about 1250° F. and 1500° F. The brazing material preferably has about 30 percent by weight of silver, about 36 percent by weight of copper, about 32 percent by weight of zinc, and about 2 percent by weight of nickel. The addition of nickel in the above-specified amount improves resistance against interface corrosion in aqueous solutions, aids in the strength of the alloy, and provides improved wettability on ferrous and non-ferrous substrates. The brazing material may also include a flux, such as a core or a coating.
摘要:
The invention includes solder materials having low concentrations of alpha particle emitters, and includes methods of purification of materials to reduce a concentration of alpha particle emitters within the materials. The invention includes methods of reducing alpha particle flux in various lead-containing and lead-free materials through purification of the materials. The invention also includes methods of estimating the fractionation of a low concentration of one or more alpha particle emitters during purification of a material.
摘要:
Disclosed is a Pb-free solder alloy consisting of, in mass %, 0.1-1.5% of Ag, 0.5-0.75% of Cu, Ni in an amount satisfying 12.5≦Cu/Ni≦100, and the balance of Sn and unavoidable impurities. The solder alloy preferably contains, in mass %, 0.3-1.2% of Ag and 0.01-0.04% of Ni. Also disclosed is a solder ball obtained by spheroidizing the solder alloy. In addition, the solder alloy is suitable for a solder joint onto an Ni electrode. The solder alloy has excellent drop impact resistance, while being suppressed in decrease of joining strength under high temperature conditions for a long time.
摘要翻译:公开了以质量%计含有0.1-1.5%的Ag,0.5-0.75%的Cu,Ni,满足12.5≦̸ Cu / Ni&NlE; 100,其余为Sn和不可避免的 杂质。 焊料合金优选以Ag计为0.3-1.2%,Ni为0.01-0.04%。 还公开了通过球化焊料合金获得的焊球。 此外,焊料合金适用于Ni电极上的焊点。 焊料合金具有优异的耐滴落冲击性,同时在高温条件下长时间抑制接合强度的降低。
摘要:
The present invention provides a powder blend or composite powder that is fed into a kinetic spray device, accelerated towards a substrate or part in order to form a composite solder with thermal and electrical properties better than existing solder. The other advantages of building a solder layer in this manner include a low oxide content to improve subsequent solderability, excellent control of the deposition thickness, excellent control of the deposition chemistry and lastly, high speed of manufacture.
摘要:
A method for aligning the sputter target onto a backing plate having a peripheral arcuate-shaped flange on its bonding surface to provide an aligned and uniform solder bonded interface; and the sputter target/backing plate assembly so produced.
摘要:
The present invention provides a high-temperature lead-free solder alloy which has no variation in strength of the soldered portion and has an excellent balance between strength and soldering properties, and a method for producing the alloy. The present invention relates to a lead-free jointing material made of an alloy of two elements A and B selected from elements other than Pb, wherein the element A has a melting point higher than a melting point of the element B, wherein the alloy is an alloy which has a room-temperature stable phase composed of the element B and a room-temperature stable phase AmBn composed of the elements A and B (provided that m and n are specific numerals in accordance with an alloy constituting a stable phase at room temperature) and satisfies AxB1-x (provided that 0
摘要:
A solder composition containing a lead-free SnZn alloy and a solder flux that contains at least an epoxy resin and an organic carboxylic acid. The organic carboxylic acid is dispersed in the solder composition as a solid at room temperature, and has a molecular weight of from 100 to 200 g/mol.
摘要:
The solder composition comprises particles of a thermodynamically metastable alloy. One of the elements of the alloy will form an intermetallic compound with a metal surface. The solder composition is particularly suitable for use in bumping of semiconductor devices.