摘要:
Disclosed is a conductive connecting material 30 used to form conductive portions on a plurality of terminals 11 of an electronic member having a substrate 10 and the plurality of terminals 11 provided on the substrate 10, comprising a metal layer 110 and a resin layer 120 having a resin component and a filler, in which the metal layer is aggregated on each of terminals to form the conductive portions on the plurality of terminals by bringing the conductive connecting material into contact with the plurality of terminals and heating the conductive connecting material.
摘要:
Reactive foils and their uses are provided as localized heat sources useful, for example, in ignition, joining and propulsion. An improved reactive foil (14) is preferably a freestanding multilayered foil structure made up of alternating layers (16, 18) selected from materials that will react with one another in an exothermic and self-propagating reaction. Upon reacting, this foil supplies highly localized heat energy that may be applied, for example, to joining layers, or directly to bulk materials that are to be joined. This foil heat-source allows rapid bonding to occur at room temperature in virtually an environment (e.g., air, vacuum, water, etc.). If a joining material is used, the foil reaction will supply enough heat to melt the joining materials. If no joining material is used, the foil reaction supplies heat directly to at least two bulk materials, melting a portion of each bulk, which upon cooling, form a strong bond. Additionally, the foil (14) may be designed with openings that allow extrusion of the joining (or bulk) material through the foil to enhance bonding.
摘要:
Reactive foils and their uses are provided as localized heat sources useful, for example, in ignition, joining and propulsion. An improved reactive foil (14) is preferably a freestanding multilayered foil structure made up of alternating layers (16, 18) selected from materials that will react with one another in an exothermic and self-propagating reaction. Upon reacting, this foil supplies highly localized heat energy that may be applied, for example, to joining layers, or directly to bulk materials that are to be joined. This foil heat-source allows rapid bonding to occur at room temperature in virtually an environment (e.g., air, vacuum, water, etc.). If a joining material is used, the foil reaction will supply enough heat to melt the joining materials. If no joining material is used, the foil reaction supplies heat directly to at least two bulk materials, melting a portion of each bulk, which upon cooling, form a strong bond. Additionally, the foil (14) may be designed with openings that allow extrusion of the joining (or bulk) material through the foil to enhance bonding.
摘要:
A multilayer printed circuit board comprises a core substrate, multilayer wiring layers formed on the substrate by alternately laminating an interlaminar insulating layer and conductor circuit, and a group of solder pads having solder bumps planarly arranged on an outermost surface of the multilayer wiring layers, in which the solder pads located from first row to fifth row from an outer position of the solder pad group are constructed with flat pads connected to conductor pattern located on the outermost surface and solder bumps formed on the surfaces of the pads, while the solder pad group other than these solder pads are constructed with viaholes connected to flat innerlayer pad group located in an inner layer and solder bumps formed in recess portions of the viaholes, and the solder pads located from first row to fifth row from an outer position of the innerlayer pad group are constructed with flat pads connected to conductor patterns in the same layer as the innerlayer pad group, while the innerlayer pad groups other than the pads are constituted with flat pads connected to a further innerlayer flat pad group located inward the above innerlayer through viaholes.
摘要:
A flux for a resin flux cored solder contains 30% or more by mass but 80% or less by mass rosin ester and 5% or more by mass but 15% or less by mass activator. The total content ratio of base materials including the rosin ester is preferably equal to or more than 85% by mass but equal to or less than 95% by mass.