Abstract: An electronic component mounting device is provided for mounting a plurality of electronic components, the plurality of the electronic component being placed in a predetermined portion, on a plurality of attachments each arranged at a predetermined interval from one another. The electronic component mounting device includes a removal mechanism for removing some of the plurality of the electronic components having been placed in the predetermined portion, a transport mechanism for transporting the electronic components removed by the removal mechanism, moving the electronic components so that intervals between the electronic components adjacent to one another are, respectively, the predetermined interval before reaching the attachments, and transporting the electronic components to the attachments, and a mounting and transfer mechanism for mounting the electronic components, which have been transported by the transport mechanism, on predetermined positions of the attachments.

Abstract: Provided is a solder paste which uses a conventional flux, and for which long-term preservation is made possible and an easy preservation method can be realized by suppressing changes in the viscosity of the paste over time. This solder paste is provided with a solder powder, a zirconium oxide powder, and a flux, and changes in the viscosity of the paste over time are suppressed.

Abstract: An electronic component mounting device is provided for mounting, at different intervals from each other on attachments, a plurality of electronic components which have been placed in a predetermined portion. The electronic component mounting device comprises a removal mechanism for removing some of the plurality of the electronic components being placed in the predetermined portion, a transport mechanism for transporting the electronic components removed by the removal mechanism, moving the electronic components such that, before reaching the attachments, the plurality of the electronic components are at the different intervals at which they will be mounted on the attachments, and transporting the electronic components to the attachments, and a mounting and transfer mechanism for mounting the electronic components, which have been transported by the transport mechanism, on predetermined positions of the attachments.

Abstract: Provided are: a flux that is for a solder paste and that can inhibit occurrence of voids; and a solder paste using the flux. This flux for a solder paste contains rosin, an imidazole compound, and a solvent, wherein the contained amount of the imidazole compound is 25-35 mass %. The flux also contains 0-20 mass % of a block organic acid and 0-3 mass % of an activator.

Abstract: Provided are: a flux that is for a solder paste and that can inhibit occurrence of voids; and a solder paste using the flux. This flux for a solder paste contains rosin, an imidazole compound, and a solvent, wherein the contained amount of the imidazole compound is 25-35 mass %. The flux also contains 0-20 mass % of a block organic acid and 0-3 mass % of an activator.

Abstract: Provided is a solder paste which uses a conventional flux, and for which long-term preservation is made possible and an easy preservation method can be realized by suppressing changes in the viscosity of the paste over time. This solder paste is provided with a solder powder, a zirconium oxide powder, and a flux, and changes in the viscosity of the paste over time are suppressed.

Abstract: An electronic component mounting device is provided for mounting a plurality of electronic components, the plurality of the electronic component being placed in a predetermined portion, on a plurality of attachments each arranged at a predetermined interval from one another. The electronic component mounting device includes a removal mechanism for removing some of the plurality of the electronic components having been placed in the predetermined portion, a transport mechanism for transporting the electronic components removed by the removal mechanism, moving the electronic components so that intervals between the electronic components adjacent to one another are, respectively, the predetermined interval before reaching the attachments, and transporting the electronic components to the attachments, and a mounting and transfer mechanism for mounting the electronic components, which have been transported by the transport mechanism, on predetermined positions of the attachments.

Abstract: By using a solder alloy consisting essentially of 0.2-1.2 mass % of Ag, 0.6-0.9 mass % of Cu, 1.2-3.0 mass % of Bi, 0.02-1.0 mass % of Sb, 0.01-2.0 mass % of In, and a remainder of Sn, it is possible to obtain portable devices having excellent resistance to drop impact and excellent heat cycle properties without developing thermal fatigue even when used in a high-temperature environment such as inside a vehicle heated by the sun or in a low-temperature environment such as outdoors in snowy weather.

Abstract: Provided is a flux for a solder paste that can prevent peeling from electrode, which is seen in a component, a thickness of which is reduced, such a semiconductor package like BGA. Rosin, a glycol-ether-based solvent, an organic acid, a thixotropic agent, a halogen compound, and an imidazole compound are contained and the halogen compound is either an amine hydrohalide or an organohalogen compound or a combination of them. Their addition amounts stay within a range satisfying a formula of 2.5-X-0.625Y?0 in which the addition amount of the amine hydrohalide is indicated by X (weight %) and the addition amount of the organohalogen compound is indicated by Y (weight %). However, the addition amount X of the amine hydrohalide and the addition amount Y of the organohalogen compound are such that 0?X?2.5 and 0?Y?4, excluding a range of 0?X<0.02 and 0?Y<0.1.

Abstract: By using a solder alloy consisting essentially of 0.2-1.2 mass % of Ag, 0.6-0.9 mass % of Cu, 1.2-3.0 mass % of Bi, 0.02-1.0 mass % of Sb, 0.01-2.0 mass % of In, and a remainder of Sn, it is possible to obtain portable devices having excellent resistance to drop impact and excellent heat cycle properties without developing thermal fatigue even when used in a high-temperature environment such as inside a vehicle heated by the sun or in a low-temperature environment such as outdoors in snowy weather.