摘要:
PROBLEM TO BE SOLVED: To provide photonic sintering of polymer thick film conductor compositions.SOLUTION: The present invention provides a method for using a polymer thick film conductor composition to form an electrical conductor in an electrical circuit, the method subjecting the deposited thick film conductor composition to photonic sintering. The present invention also provides a method for reducing the resistance of an electrical conductor formed from a polymer thick film conductor composition, the method including the step of subjecting the electrical conductor to photonic sintering. The present invention further provides devices containing electrical conductors made by these methods.
摘要:
PROBLEM TO BE SOLVED: To provide a flux in which the cracks of the flux residue can be suppressed, and which also has satisfactory solder wettability even in high temperature soldering, and to provide a solder composition.SOLUTION: A flux includes at least one polybutadiene (meth)acrylate compound selected from a group consisting of specified polybutadiene (meth)acrylate compounds and hydrogenated dimer acid. Cracks are hard to be generated in the residue flux after soldering, and also, satisfactory solder wettability can be exhibited even if reflow heating under high temperature preheating is performed in an air atmosphere.
摘要:
PROBLEM TO BE SOLVED: To solve such a problem that because a conventional method for formed solder production comprises directly introducing a given amount of metal particles into a molten solder and then dispersing the metal particles, the formed solder thus obtained contains a flux remaining in a slight amount, and consequently, soldering with the formed solder obtained by the conventional production method results in void generation or part inclination to be insufficient in bonding strength.SOLUTION: A mother alloy mixture is produced from a mixture of a thermally decomposable flux and high-melting point metal particles, is added to a large amount of a molten solder, and is stirred to produce a billet. The billet is subjected to extrusion, rolling and punching steps to form pellets or washers.
摘要:
There are provided are an adhesive composition that keeps storage stability and further gives a cured product wherein metallic bonds are formed in the state that the cured product wets its components and is satisfactorily spread between the components (or parts), thereby turning excellent in adhesive property, electroconductivity, and reliability for mounting such as TCT resistance or high-temperature standing resistance; an electronic-component-mounted substrate using the same; and a semiconductor device. The adhesive composition comprises electroconductive particles (A) and a binder component (B), wherein the electroconductive particles (A) include a metal (a1) having a melting point equal to or higher than the reflow temperature and containing no lead, and a metal (a2) having a melting point lower than the reflow temperature and containing no lead, and the binder component (B) includes a thermosetting resin composition (b1) and an aliphatic dihydroxycarboxylic acid (b2).