Abstract:
The electronic device of the present invention is an electronic device configured by soldering a terminal member to a printed circuit board, the terminal member comprising a top surface into which a screw is threaded and a side surface at the end connected to the top surface, the side surface having convex parts fitted into through-holes in the printed circuit board; wherein the terminal member has at least two convex parts in the end edge on the printed circuit board side of the side surface, an electro conductive pattern is provided on the printed circuit board facing the end edge between the convex parts, solder is filled into a gap between the end edge and the electro conductive pattern, when the two convex parts are inserted into the through-holes provided to the electro conductive pattern, and electrical continuity is established between the end edge and the electro conductive pattern.
Abstract:
In a module, press-fit connection using a pin terminal (1) including a connection part (2) separated into two parts and a flat plane (2a) parallel to the lengthwise direction in the separation part and perpendicular to the separation direction of the pin terminal (1) is performed. A through-hole of a board is structured so that (1) an inner diameter of the through-hole at a middle part in the thickness direction of the board is smaller than that at obverse and reverse surfaces of the board (4) and (2) the length of the middle part of the through-hole connected to the pin terminal (1) is shorter than the length of the flat plane (2a) of the pin terminal (1).
Abstract:
A contact tail (272) for an electronic component compatible with surface mount manufacturing techniques. The contact tail is stamped, providing a relatively low manufacturing cost and high precision. High precision in the contact tails in turn provides more reliable solder joints across an array of contact tails in an electronic component. Further, the contact tail may be shaped to reduce the propensity for solder to wick from the attachment area during a reflow operation. Reducing the propensity of solder to wick reduces the chance that solder will interfere with the operation of the electronic component. Additionally, reducing the propensity for solder to wick allows pads (302) to which the contact tail is attached to be positioned over vias (304), thereby increasing the density with which contacts may be attached to a substrate. The reliability with which electronic assemblies incorporating components using the contact tail is also increased when the contact tail is used in self-centering arrays.
Abstract:
A contact tail for an electronic component compatible with surface mount manufacturing techniques. The contact tail is stamped, providing a relatively low manufacturing cost and high precision. High precision in the contact tails in turn provides more reliable solder joints across an array of contact tails in an electronic component. Further, the contact tail may be shaped to reduce the propensity for solder to wick from the attachment area during a reflow operation. Reducing the propensity of solder to wick reduces the chance that solder will interfere with the operation of the electronic component. Additionally, reducing the propensity for solder to wick allows pads to which the contact tail is attached to be positioned over vias, thereby increasing the density with which contacts may be attached to a substrate. The reliability with which electronic assemblies incorporating components using the contact tail is also increased when the contact tail is used in self-centering arrays.
Abstract:
A contact tail for an electronic component compatible with surface mount manufacturing techniques. The contact tail is stamped, providing a relatively low manufacturing cost and high precision. High precision in the contact tails in turn provides more reliable solder joints across an array of contact tails in an electronic component. Further, the contact tail may be shaped to reduce the propensity for solder to wick from the attachment area during a reflow operation. Reducing the propensity of solder to wick reduces the chance that solder will interfere with the operation of the electronic component. Additionally, reducing the propensity for solder to wick allows pads to which the contact tail is attached to be positioned over vias, thereby increasing the density with which contacts may be attached to a substrate. The reliability with which electronic assemblies incorporating components using the contact tail is also increased when the contact tail is used in self-centering arrays.
Abstract:
Provided is a substrate terminal-equipped printed circuit board having configured to enable a substrate terminal to be fixed to a printed circuit board without using a pedestal, and to reduce the pressure and the insertion force applied to an inner surface of a through hole when the substrate terminal is press-fitted therein. A conducting portion of a substrate terminal includes: a press-fitted portion disposed at a proximal end portion thereof and is press-fitted into a through hole; and a loosely inserted portion that extends from the press-fitted portion to a distal end portion thereof, has a narrower width than the press-fitted portion, and is inserted into the through hole with a gap therebetween, and the press-fitted portion of the conducting portion is in pressure contact only with printed wiring provided on a surface layer of the printed circuit board and with an insulating layer located immediately below the printed wiring.