摘要:
First and second terminals project from a circuit board and lie adjacent to each other with an interspace formed between the first and second terminals. An electronic apparatus further includes a projecting member projecting along a neighboring terminal which is one of the first and second terminals at such a position that the neighboring terminal is located between the projecting member and the interspace. The projecting member is located at an adjacent position adjacent to the neighboring terminal, to attract molten solder from the interspace toward the projecting member during soldering to join the first and second terminals to the circuit board.
摘要:
KN(SO2F)2 is synthesized by adding HN(SO2Cl)2 dropwise to KF to form an intermediate product, and then allowing the intermediate product and KF to react with each other in an aqueous solvent.
摘要:
Disclosed is an electrically conductive paste which enables to reduce the level of void growth in a conducting pathway formed in a joint part produced after curing the electrically conductive paste in the implementation of an electronic component on a circuit board by using the electrically conductive paste, and which contains a reduced amount of a viscosity-adjusting/thixotropy-imparting additive. Two Sn-containing low-melting-point alloy particles having different melting points and different average particle diameters are selected as electrically conductive filler components to be used in an electrically conductive paste, and the two alloy particles are mixed at a predetermined ratio for use.
摘要:
A molten-salt battery is provided with rectangular plate-like negative electrodes (21) and rectangular plate-like positive electrodes (41) each housed in a bag-shaped separator (31). The negative electrodes (21) and positive electrodes (41) are arranged laterally and alternately in a standing manner. A lower end of a rectangular tab (22) for collecting current is joined to an upper end of each negative electrode (21) close to a side wall (1A) of a container body (1). The upper ends of the tabs (22) are joined to the lower surface of a rectangular plate-like tab lead (23). A lower end of a rectangular tab (42) for collecting current is joined to an upper end of each positive electrode (41) close to a side wall (1B) of the container body (1). The upper ends of the tabs (42) are joined to the lower surface of a rectangular plate-like tab lead (43).
摘要:
Provided is a molten salt battery whose cycle life is improved by using an electrolyte that is unlikely to cause corrosion of aluminum. In the molten salt battery of the present invention, the total concentration of iron ions and nickel ions contained as impurities in the electrolyte composed of a molten salt is set to be 0.1% by weight or less, preferably 0.01% by weight or less. Because of the low total concentration of iron ions and nickel ions contained in the electrolyte, corrosion of the electrode current collector composed of aluminum is inhibited, and the cycle life of the molten salt battery is improved.
摘要:
A main object is to produce a porous metal body that can be used as a battery electrode, in particular, that can be used as a negative electrode of a molten-salt battery using sodium. The porous metal body includes a hollow metal skeleton composed of a metal layer containing nickel or copper as a main component, and an aluminum covering layer that covers at least an outer surface of the metal skeleton. The porous metal body further includes a tin covering layer that covers the aluminum covering layer, and is used as a battery electrode. Preferably, the porous metal body has continuous pores due to a three-dimensional network structure thereof, and has a porosity of 90% or more.
摘要:
A plurality of semiconductor elements is adjacently mounted on a substrate by a solder with a melting point of 200° C. or lower, an electronic part other than the semiconductor elements is mounted on the substrate between the adjacently mounted semiconductor elements by a solder with a melting point of 200° C. or lower, and spaces between the plurality of semiconductor elements and the substrate, spaces between the electronic part and the substrate, and spaces between the plurality of semiconductor elements and the electronic part are integrally molded with a molding resin.
摘要:
A package structure including an electronic component 2 mounted on a circuit board 1 with a bonding metal 3, wherein a flux 4 contains a compound having a hydroxyl group and remains on the surface of the bonding metal 3, a coating resin 5 contains 10% to 50% by weight of isocyanate, and a reactant 8 of the coating resin 5 and the flux 4 is formed at an interface between the flux 4 and the coating resin 5. Water resistance and moisture resistance can be obtained without cleaning the flux 4. The coating resin 5 can be easily peeled off at a temperature not lower than the glass transition point temperature of the flux 4.
摘要:
A sealing material is provided which has sealing characteristics with low stress and high reliability upon mounting electronic parts on a board, and good repairablity after the sealing. The sealing material contains a heat-curable resin component and is characterized by ΔE/ΔT in a range of from 0.5 MPa/° C. to 30 MPa/° C. wherein ΔE/ΔT represents a ratio of change (ΔE) in storage elastic modulus (E) relative to a temperature change (ΔT) when the storage elastic modulus (E) is determined as the temperature is raised within a temperature range including a glass transition point (Tg) of the cured sealing material.
摘要:
A method for manufacturing a circuit board on which an electronic component is mounted, includes at least the steps of (a) supplying a liquid photo-polymerizable adhesive containing conductive particles dispersed therein to a surface of a printed board, to form an adhesive layer on the board surface; (b) irradiating the photo-polymerizable adhesive with ultraviolet light to turn into a gel, to provide adhesiveness to the adhesive layer; and (c) pressing the electronic component against the component mounting portion of the printed board from an upper surface side of the adhesive layer, to form an electrical connection between the electronic component and the component mounting portion, and in the method, the photo-polymerizable adhesive is a delayed reactive adhesive.