Abstract:
PROBLEM TO BE SOLVED: To provide a system and method for mounting an electronic component which prevent a bonding failure in mounting a thin semiconductor package by solder bonding. SOLUTION: In an electronic component mounting process of mounting an electronic component, which has a plurality of external bonding solder bumps formed on its undersurface, on a board, the level of solder paste is measured in advance using the board having been printed with the solder paste as the subject of measurement, and the electronic component is mounted on the board having been printed with the solder paste by a mounting head. In this component mounting operation, whether transfer of the solder paste to the solder bumps is necessary is determined based on a result of measurement of the solder paste level. When a determination of necessity of the transfer is made, the transfer of the solder paste is executed, and then the electronic component is mounted on the board. This prevents a bonding failure in mounting a thin semiconductor package, which is given to wrap, by solder bonding. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
A Z-directed component for mounting in a mounting hole in a printed circuit board according to one example embodiment includes a main body portion and a tapered end portion that facilitates insertion of the Z-directed component into the mounting hole in the printed circuit board. The tapered end portion is removably attached to the main body portion such that the tapered end portion may be removed after the Z-directed component is inserted into the mounting hole in the printed circuit board. A method for installing a Z-directed component having a removable tapered lead-in into the mounting hole according to one example embodiment includes inserting the Z- directed component into the mounting hole in the printed circuit board with the removable tapered lead-in leading the insertion and after the Z-directed component is inserted into the mounting hole, removing the removable lead-in from the rest of the Z-directed component.
Abstract:
A device (501) comprising a component (501) and an adhesive (506) attached to at least one exterior portion of the component. When the component (501) is on a printed circuit (500) and passed through a reflow operation, the adhesive melts forming a physical bond between the component (501) and the printed circuit (500). The printed circuit (500) may be a flexible printed circuit or a printed circuit board. The adhesive (506) may melt under and to at least one edge of the component (501). The adhesive (506) may also melt under and to at least one edge of the component and under and to at least one edge of at least one second component adjacent to the component.
Abstract:
Regarding electronic component mounting in which an electronic component having plural solder bumps for external connection on its lower surface is mounted on a board, in an electronic component mounting operation of previously measuring the height position of solder paste on the board on which the solder paste has been printed, and mounting the electronic component on the board on which the solder paste has been printed by a loading head, whether the transfer of the solder paste to the solder bumps is necessary or not is judged on the basis of the measurement result of the height of the solder paste. In case that it is judged that the transfer is necessary, the transfer of the solder paste is executed, and thereafter the electronic component is mounted on the board. Hereby, it is possible to prevent the poor joint in case that a thin-sized semiconductor package which causes easily warp deformation is mounted on the board by solder-joint.
Abstract:
Bei einem elektrischen Verbindungselement (1) umfassend einen elektrischen Leiter (2) und eine elektrisch leitfähige Beschichtung (3), wird, um ein Verbindungselement zu schaffen, welches einerseits leicht verarbeitbar ist, eine hohe Haftkraft ermöglicht und dabei nur geringe Beschichtungsstärken benötigt, vorgeschlagen, dass die Oberfläche des elektrischen Leiters (2) zumindest bereichsweise mit einer Strukturierung und/oder rauen Oberfläche (5) ausgebildet ist.
Abstract:
A method for providing a PCB (printed circuit board) with a shield can (1) comprising a metal shell with a free rim (5). The method prescribes that the rim (5) of the shield can (1) is provided with an extra amount of solder (8) before the shield can (1) is placed on the PCB. A shield can (1) is also described.
Abstract:
A method and device are disclosed for mounting a printed circuit board to another printed circuit board. The device (1) includes a first printed circuit board (2) having a plurality of electrical components (3) disposed thereon, the first printed circuit board (2) including a plurality of wire segments (4) electrically connecting the electrical components (3) together and a plurality of input-output wire segments (5) being routed to side surfaces (2B) of the first printed circuit board (2). The device further includes a plurality of plate members (6) of electrically conductive material disposed along the side surfaces (2B) of the first printed circuit board (2) and associated with the input-output wire segments (5) thereof. A solder bump (8) is disposed against each plate member (6). The first printed circuit board (2) is disposed on a second printed circuit board (B) and maintained thereon by the solder bumps (8), the second printed circuit board (B) providing electrical connectivity to each input-output wire segment (5) of the first printed circuit board (2). Because each solder bump (8)/plate member (6)/input-output segment (5) of the first printed circuit board (2) is located at the periphery thereof, the solder bumps (8)/plate members (6)/input-output segments (5) of the first printed circuit board (2) is easily inspected, reworked or removed.